Follow the docs at Documentation/bpf/kfuncs.rst:
- declare the function with `__bpf_kfunc`
- disables missing prototype warnings, which allows to remove them from
  include/linux/hid-bpf.h

Removing the prototypes is not an issue because we currently have to
redeclare them when writing the BPF program. They will eventually be
generated by bpftool directly AFAIU.

Link: https://lore.kernel.org/r/20240124-b4-hid-bpf-fixes-v2-3-052520b1e5e6@kernel.orgSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

Turns out that I got my reference counts wrong and each successful
bus_find_device() actually calls get_device(), and we need to manually
call put_device().

Ensure each bus_find_device() gets a matching put_device() when releasing
the bpf programs and fix all the error paths.

Cc: <stable@vger.kernel.org>
Fixes: f5c27da4 ("HID: initial BPF implementation")
Link: https://lore.kernel.org/r/20240124-b4-hid-bpf-fixes-v2-2-052520b1e5e6@kernel.orgSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

When the kfunc hid_bpf_attach_prog() is called, we called twice fdget():
one for fetching the type of the bpf program, and one for actually
attaching the program to the device.

The problem is that between those two calls, we have no guarantees that
the prog_fd is still the same file descriptor for the given program.

Solve this by calling bpf_prog_get() earlier, and use this to fetch the
program type.
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/bpf/CAO-hwJJ8vh8JD3-P43L-_CLNmPx0hWj44aom0O838vfP4=_1CA@mail.gmail.com/T/#t
Cc: <stable@vger.kernel.org>
Fixes: f5c27da4 ("HID: initial BPF implementation")
Link: https://lore.kernel.org/r/20240124-b4-hid-bpf-fixes-v2-1-052520b1e5e6@kernel.orgSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

A while back the I2C HID implementation was split in an ACPI and OF
part, but the new OF driver never initialises the client pointer which
is dereferenced on power-up failures.

Fixes: b33752c3 ("HID: i2c-hid: Reorganize so ACPI and OF are separate modules")
Cc: stable@vger.kernel.org      # 5.12
Cc: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

'struct hidraw_list' is a circular queue whose head can be smaller than
tail. Using 'list->tail != list->head' to release all memory that should
be released.

Fixes: a5623a20 ("HID: hidraw: fix memory leak in hidraw_release()")
Signed-off-by: Su Hui <suhui@nfschina.com>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

There's a Cirque touchpad that wakes system up without anything touched
the touchpad. The input report is empty when this happens.
The reason is stated in HID over I2C spec, 7.2.8.2:
"If the DEVICE wishes to wake the HOST from its low power state, it can
issue a wake by asserting the interrupt."

This is fine if OS can put system back to suspend by identifying input
wakeup count stays the same on resume, like Chrome OS Dark Resume [0].
But for regular distro such policy is lacking.

Though the change doesn't bring any impact on power consumption for
touchpad is minimal, other i2c-hid device may depends on SLEEP control
power. So use a quirk to limit the change scope.

[0] https://chromium.googlesource.com/chromiumos/platform2/+/HEAD/power_manager/docs/dark_resume.mdSigned-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

[jkosina@suse.com: tweak changelog a bit]
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Reviewed-by: Rahul Rameshbabu <rrameshbabu@nvidia.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

Let logitech-hidpp driver claim Logitech G Pro X Superlight 2.
Reported-by: Marcus Rückert <darix@opensu.se>
Signed-off-by: Jiri Kosina <jkosina@suse.com>

The device is exported with a fuzz of 4, meaning that the `+ t` here
is removed by the fuzz algorithm, making those tests failing.

Not sure why, but when I run this locally it was passing, but not in the
VM of the CI.

Fixes: b0fb904d ("HID: wacom: Add additional tests of confidence behavior")
Link: https://gitlab.freedesktop.org/bentiss/hid/-/jobs/53692957#L3315Acked-by: Jason Gerecke <jason.gerecke@wacom.com>
Link: https://lore.kernel.org/r/20240117-b4-wip-wacom-tests-fixes-v1-1-f317784f3c36@kernel.orgSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

There are a number of issues in this code.  First of all if
steam_create_client_hid() fails then it leads to an error pointer
dereference when we call hid_destroy_device(steam->client_hdev).

Also there are a number of leaks.  hid_hw_stop() is not called if
hid_hw_open() fails for example.  And it doesn't call steam_unregister()
or hid_hw_close().

Fixes: 691ead12 ("HID: hid-steam: Clean up locking")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/1fd87904-dabf-4879-bb89-72d13ebfc91e@moroto.mountainSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

This error message doesn't really add any information.  If modprobe
fails then the user will already know what the error code is.  In the
case of kmalloc() it's a style violation to print an error message for
that because kmalloc has it's own better error messages built in.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Vicki Pfau <vi@endrift.com>
Link: https://lore.kernel.org/r/305898fb-6bd4-4749-806c-05ec51bbeb80@moroto.mountainSigned-off-by: Benjamin Tissoires <bentiss@kernel.org>

Pull HID updates from Jiri Kosina:

 - assorted functional fixes for hid-steam ported from SteamOS betas
   (Vicki Pfau)

 - fix for custom sensor-hub sensors (hinge angle sensor and LISS
   sensors) not working (Yauhen Kharuzhy)

 - functional fix for handling Confidence in Wacom driver (Jason
   Gerecke)

 - support for Ilitek ili2901 touchscreen (Zhengqiao Xia)

 - power management fix for Wacom userspace battery exporting
   (Tatsunosuke Tobita)

 - rework of wait-for-reset in order to reduce the need for
   I2C_HID_QUIRK_NO_IRQ_AFTER_RESET qurk; the success rate is now 50%
   better, but there are still further improvements to be made (Hans de
   Goede)

 - greatly improved coverage of Tablets in hid-selftests (Benjamin
   Tissoires)

 - support for Nintendo NSO controllers -- SNES, Genesis and N64 (Ryan
   McClelland)

 - support for controlling mcp2200 GPIOs (Johannes Roith)

 - power management improvement for EHL OOB wakeup in intel-ish
   (Kai-Heng Feng)

 - other assorted device-specific fixes and code cleanups

* tag 'hid-for-linus-2024010801' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: (53 commits)
  HID: amd_sfh: Add a new interface for exporting ALS data
  HID: amd_sfh: Add a new interface for exporting HPD data
  HID: amd_sfh: rename float_to_int() to amd_sfh_float_to_int()
  HID: i2c-hid: elan: Add ili2901 timing
  dt-bindings: HID: i2c-hid: elan: Introduce Ilitek ili2901
  HID: bpf: make bus_type const in struct hid_bpf_ops
  HID: make ishtp_cl_bus_type const
  HID: make hid_bus_type const
  HID: hid-steam: Add gamepad-only mode switched to by holding options
  HID: hid-steam: Better handling of serial number length
  HID: hid-steam: Update list of identifiers from SDL
  HID: hid-steam: Make client_opened a counter
  HID: hid-steam: Clean up locking
  HID: hid-steam: Disable watchdog instead of using a heartbeat
  HID: hid-steam: Avoid overwriting smoothing parameter
  HID: magicmouse: fix kerneldoc for struct magicmouse_sc
  HID: sensor-hub: Enable hid core report processing for all devices
  HID: wacom: Add additional tests of confidence behavior
  HID: wacom: Correct behavior when processing some confidence == false touches
  HID: nintendo: add support for nso controllers
  ...

Pull fbdev updates from Helge Deller:
 "Three fbdev drivers (~8500 lines of code) removed. The Carillo Ranch
  fbdev driver is for an Intel product which was never shipped, and for
  the intelfb and the amba-clcd drivers the drm drivers can be used
  instead.

  The other code changes are minor: some fb_deferred_io flushing fixes,
  imxfb margin fixes and stifb cleanups.

  Summary:
   - Remove intelfb fbdev driver (Thomas Zimmermann)
   - Remove amba-clcd fbdev driver (Linus Walleij)
   - Remove vmlfb Carillo Ranch fbdev driver (Matthew Wilcox)
   - fb_deferred_io flushing fixes (Nam Cao)
   - imxfb code fixes and cleanups (Dario Binacchi)
   - stifb primary screen detection cleanups (Thomas Zimmermann)"

* tag 'fbdev-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (28 commits)
  fbdev/intelfb: Remove driver
  fbdev/hyperv_fb: Do not clear global screen_info
  firmware/sysfb: Clear screen_info state after consuming it
  fbdev/hyperv_fb: Remove firmware framebuffers with aperture helpers
  drm/hyperv: Remove firmware framebuffers with aperture helper
  fbdev/sis: Remove dependency on screen_info
  video/logo: use %u format specifier for unsigned int values
  video/sticore: Remove info field from STI struct
  arch/parisc: Detect primary video device from device instance
  fbdev/stifb: Allocate fb_info instance with framebuffer_alloc()
  video/sticore: Store ROM device in STI struct
  fbdev: flush deferred IO before closing
  fbdev: flush deferred work in fb_deferred_io_fsync()
  fbdev: amba-clcd: Delete the old CLCD driver
  fbdev: Remove support for Carillo Ranch driver
  fbdev: hgafb: fix kernel-doc comments
  fbdev: mmp: Fix typo and wording in code comment
  fbdev: fsl-diu-fb: Fix sparse warning due to virt_to_phys() prototype change
  fbdev: imxfb: add '*/' on a separate line in block comment
  fbdev: imxfb: use __func__ for function name
  ...

Pull media updates from Mauro Carvalho Chehab:

 - v4l core: subdev frame interval now supports which field

 - v4l kapi: moves and renames the init_cfg pad op to init_state as an
   internal op.

 - new sensor drivers: gc0308, gc2145, Avnet Alvium, ov64a40, tw9900

 - new camera driver: STM32 DCMIPP

 - s5p-mfc has gained MFC v12 support

 - new ISP driver added to staging: Starfive

 - new stateful encoder/decoded: Wave5 codec It is found on the J721S2
   SoC, JH7100 SoC, ssd202d SoC. Etc.

 - fwnode gained support for MIPI "DisCo for Imaging"
   (https://www.mipi.org/specifications/mipi-disco-imaging)

 - as usual, lots of cleanups, fixups and driver improvements.

* tag 'media/v6.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (309 commits)
  media: i2c: thp7312: select CONFIG_FW_LOADER
  media: i2c: mt9m114: use fsleep() in place of udelay()
  media: videobuf2: core: Rename min_buffers_needed field in vb2_queue
  media: i2c: thp7312: Store frame interval in subdev state
  media: docs: uAPI: Fix documentation of 'which' field for routing ioctls
  media: docs: uAPI: Expand error documentation for invalid 'which' value
  media: docs: uAPI: Clarify error documentation for invalid 'which' value
  media: v4l2-subdev: Store frame interval in subdev state
  media: v4l2-subdev: Add which field to struct v4l2_subdev_frame_interval
  media: v4l2-subdev: Turn .[gs]_frame_interval into pad operations
  media: v4l: subdev: Move out subdev state lock macros outside CONFIG_MEDIA_CONTROLLER
  media: s5p-mfc: DPB Count Independent of VIDIOC_REQBUF
  media: s5p-mfc: Load firmware for each run in MFCv12.
  media: s5p-mfc: Set context for valid case before calling try_run
  media: s5p-mfc: Add support for DMABUF for encoder
  media: s5p-mfc: Add support for UHD encoding.
  media: s5p-mfc: Add support for rate controls in MFCv12
  media: s5p-mfc: Add YV12 and I420 multiplanar format support
  media: s5p-mfc: Add initial support for MFCv12
  media: s5p-mfc: Rename IS_MFCV10 macro
  ...

Pull libnvdimm updates from Ira Weiny:
 "A mix of bug fixes and updates to interfaces used by nvdimm:

   - Updates to interfaces include:
        Use the new scope based management
        Remove deprecated ida interfaces
        Update to sysfs_emit()

   - Fixup kdoc comments"

* tag 'libnvdimm-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  acpi/nfit: Use sysfs_emit() for all attributes
  nvdimm/namespace: fix kernel-doc for function params
  nvdimm/dimm_devs: fix kernel-doc for function params
  nvdimm/btt: fix btt_blk_cleanup() kernel-doc
  nvdimm-btt: simplify code with the scope based resource management
  nvdimm: Remove usage of the deprecated ida_simple_xx() API
  ACPI: NFIT: Use cleanup.h helpers instead of devm_*()

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Don't force a retune before eMMC RPMB switch
   - Add optional HS400 tuning in HS400es initialization
   - Add a sysfs node to for write-protect-group-size
   - Add re-tuning test to the mmc-test module
   - Use mrq.sbc to support close-ended ioctl requests

  MMC host:
   - mmci: Add support for SDIO in-band irqs for the stm32 variant
   - mmc_spi: Remove broken support custom DMA mapped buffers
   - mtk-sd: Improve and extend the support for tunings
   - renesas_sdhi: Document support for the RZ/Five variant
   - sdhci_am654: Drop support for the ti,otap-del-sel DT property
   - sdhci-brcmstb: Add support for the brcm 74165b0 variant
   - sdhci-msm: Add compatibles for IPQ4019 and IPQ8074
   - sdhci-of-dwcmshc: Add support for the T-Head TH1520 variant
   - sdhci-xenon: Add support for the Marvell ac5 variant"

* tag 'mmc-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (27 commits)
  mmc: xenon: Add ac5 support via bounce buffer
  dt-bindings: mmc: add Marvell ac5
  mmc: sdhci-brcmstb: add new sdhci reset sequence for brcm 74165b0
  dt-bindings: mmc: brcm,sdhci-brcmstb: Add support for 74165b0
  mmc: core: Do not force a retune before RPMB switch
  mmc: core: Add HS400 tuning in HS400es initialization
  mmc: sdhci_omap: Fix TI SoC dependencies
  mmc: sdhci_am654: Fix TI SoC dependencies
  mmc: core: Add wp_grp_size sysfs node
  mmc: mmc_test: Add re-tuning test
  mmc: mmc_spi: remove custom DMA mapped buffers
  dt-bindings: mmc: sdhci-msm: document dedicated IPQ4019 and IPQ8074
  dt-bindings: mmc: synopsys-dw-mshc: add iommus for Intel SocFPGA
  mmc: mtk-sd: Extend number of tuning steps
  dt-bindings: mmc: mtk-sd: add tuning steps related property
  mmc: sdhci-omap: don't misuse kernel-doc marker
  mmc: mtk-sd: Increase the verbosity of msdc_track_cmd_data
  mmc: core: Use mrq.sbc in close-ended ffu
  mmc: sdhci_am654: Drop lookup for deprecated ti,otap-del-sel
  mmc: sdhci-of-dwcmshc: Use logical OR instead of bitwise OR in dwcmshc_probe()
  ...

Pull pmdomain updates from Ulf Hansson:
 "Core:
   - Move the generic PM domain and its governor to the pmdomain
     subsystem
   - Drop the unused pm_genpd_opp_to_performance_state()

  Providers:
   - Convert some providers to let the ->remove() callback return void
   - amlogic: Add support for G12A ISP power domain
   - arm: Move the SCPI power-domain driver to the pmdomain subsystem
   - arm: Move Kconfig options to the pmdomain subsystem
   - qcom: Update part number to X1E80100 for the rpmhpd"

* tag 'pmdomain-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
  PM: domains: Move genpd and its governor to the pmdomain subsystem
  PM: domains: Drop redundant header for genpd
  PM: domains: Drop the unused pm_genpd_opp_to_performance_state()
  PM: domains: fix domain_governor kernel-doc warnings
  pmdomain: xilinx/zynqmp: Convert to platform remove callback returning void
  pmdomain: qcom-cpr: Convert to platform remove callback returning void
  pmdomain: imx93-pd: Convert to platform remove callback returning void
  pmdomain: imx93-blk-ctrl: Convert to platform remove callback returning void
  pmdomain: imx8mp-blk-ctrl: Convert to platform remove callback returning void
  pmdomain: imx8m-blk-ctrl: Convert to platform remove callback returning void
  pmdomain: imx-gpcv2: Convert to platform remove callback returning void
  pmdomain: imx-gpc: Convert to platform remove callback returning void
  pmdomain: imx-pgc: Convert to platform remove callback returning void
  pmdomain: amlogic: meson-ee-pwrc: add support for G12A ISP power domain
  dt-bindings: power: meson-g12a-power: document ISP power domain
  firmware: arm_scpi: Move power-domain driver to the pmdomain dir
  pmdomain: arm_scmi: Move Kconfig options to the pmdomain subsystem
  pmdomain: qcom: rpmhpd: Update part number to X1E80100
  dt-bindings: power: rpmpd: Update part number to X1E80100

Pull rdma updates from Jason Gunthorpe:
 "Small cycle, with some typical driver updates:

   - General code tidying in siw, hfi1, idrdma, usnic, hns rtrs and
     bnxt_re

   - Many small siw cleanups without an overeaching theme

   - Debugfs stats for hns

   - Fix a TX queue timeout in IPoIB and missed locking of the mcast
     list

   - Support more features of P7 devices in bnxt_re including a new work
     submission protocol

   - CQ interrupts for MANA

   - netlink stats for erdma

   - EFA multipath PCI support

   - Fix Incorrect MR invalidation in iser"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (66 commits)
  RDMA/bnxt_re: Fix error code in bnxt_re_create_cq()
  RDMA/efa: Add EFA query MR support
  IB/iser: Prevent invalidating wrong MR
  RDMA/erdma: Add hardware statistics support
  RDMA/erdma: Introduce dma pool for hardware responses of CMDQ requests
  IB/iser: iscsi_iser.h: fix kernel-doc warning and spellos
  RDMA/mana_ib: Add CQ interrupt support for RAW QP
  RDMA/mana_ib: query device capabilities
  RDMA/mana_ib: register RDMA device with GDMA
  RDMA/bnxt_re: Fix the sparse warnings
  RDMA/bnxt_re: Fix the offset for GenP7 adapters for user applications
  RDMA/bnxt_re: Share a page to expose per CQ info with userspace
  RDMA/bnxt_re: Add UAPI to share a page with user space
  IB/ipoib: Fix mcast list locking
  RDMA/mlx5: Expose register c0 for RDMA device
  net/mlx5: E-Switch, expose eswitch manager vport
  net/mlx5: Manage ICM type of SW encap
  RDMA/mlx5: Support handling of SW encap ICM area
  net/mlx5: Introduce indirect-sw-encap ICM properties
  RDMA/bnxt_re: Adds MSN table capability for Gen P7 adapters
  ...

Merge tag 'firewire-updates-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire updates from Takashi Sakamoto:
 "This includes the series of changes related to device attributes, as
  well as slight code refactoring.

  Some old devices are recognized to have legacy layout of configuration
  ROM. They have an inconvenience that FireWire subsystem adds no
  attributes for vendor information to corresponding devices. The main
  purpose of this update is to rectify the inconvenience.

  We have a slight concern about regression. The update changes the
  value of modalias for the unit devices by populating its model field,
  which was previously left as zero in the case. I've assessed the
  potential impact of this change and anticipate it to have minimal
  concern for both the kernel and user lands. The change is enough
  acceptable"

* tag 'firewire-updates-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: core: fill model field in modalias of unit device for legacy layout of configuration ROM
  firewire: core: detect model name for legacy layout of configuration ROM
  firewire: core: detect numeric model identifier for legacy layout of configuration ROM
  firewire: test: add test of device attributes for legacy AV/C device
  firewire: test: add test of device attributes for simple AV/C device
  firewire: test: add KUnit test for device attributes
  firewire: core: replace magic number with macro
  firewire: core: adds constant qualifier for local helper functions
  firewire: make fw_bus_type const

Pull GNSS updates from Johan Hovold:

 - support for the reset pin found on some u-blox receivers

 - use new regulator helper for the u-blox backup supply

* tag 'gnss-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/gnss:
  gnss: ubx: add support for the reset gpio
  dt-bindings: gnss: u-blox: add "reset-gpios" binding
  gnss: ubx: use new helper to remove open coded regulator handling

Pull clk updates from Stephen Boyd:
 "Only a couple new SoCs have support added this time, primarily for
  Qualcomm SM8650 based on the diffstat. Otherwise this is a collection
  of non-critical fixes and cleanups to various clk drivers and their DT
  bindings.

  Nothing is changed in the core clk framework this time, although
  there's a patch to fix a basic clk type initialization function. In
  general, this pile looks to be on the smaller side.

  New Drivers:
   - Global, display, gpu, tcsr, and rpmh clocks on Qualcomm SM8650
   - Mediatek MT7988 SoC clocks

  Updates:
   - Update Zynqmp driver for Versal NET platforms
   - Add clk driver for Versal clocking wizard IP
   - Support for stm32mp25 clks
   - Add glitch free PLL setting support to si5351 clk driver
   - Add DSI clocks on Amlogic g12/sm1
   - Add CSI and ISP clocks on Amlogic g12/sm1
   - Document bindings for i.MX93 ANATOP clock driver
   - Free clk_node in i.MX SCU driver for resource with different owner
   - Update the LVDS clocks to be compatible with i.MX SCU firmware 1.15
   - Fix the name of the fvco in i.MX pll14xx by renaming it to fout
   - Add EtherNet TSN and PCIe clocks on the Renesas R-Car V4H SoC
   - Add interrupt controller and Ethernet clocks and resets on Renesas
     RZ/G3S
   - Check reset monitor registers on Renesas RZ/G2L-alike SoCs
   - Reuse reset functionality in the Renesas RZ/G2L clock driver
   - Global and RPMh clock support for the Qualcomm X1E80100 SoC
   - Support for the Stromer APCS PLL found in Qualcomm IPQ5018
   - Add a new type of branch clock, with support for controlling
     separate memory control bits, to the Qualcomm clk driver
   - Use above new branch type in Qualcomm ECPRI clk driver for QDU1000
     and QRU1000
   - Add a number of missing clocks related to CSI2 on Qualcomm MSM8939
   - Add support for the camera clock controller on Qualcomm SC8280XP
   - Correct PLL configuration in GPU and video clock controllers for
     Qualcomm SM8150
   - Add runtime PM support and a few missing resets to Qualcomm SM8150
     video clock controller
   - Fix configuration of various GCC GDSCs on Qualcomm SM8550
   - Mark shared RCGs appropriately in the Qualcomm SM8550 GCC driver
   - Fix up GPU and display clock controllers PLL configuration settings
     on Qualcomm SM8550
   - Cleanup variable init in Allwinner nkm module
   - Convert various DT bindings to YAML
   - A few kernel-doc fixes for Samsung SoC clock controllers"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (93 commits)
  clk: mediatek: add drivers for MT7988 SoC
  clk: mediatek: add pcw_chg_bit control for PLLs of MT7988
  dt-bindings: clock: mediatek: add clock controllers of MT7988
  dt-bindings: reset: mediatek: add MT7988 ethwarp reset IDs
  dt-bindings: clock: mediatek: add MT7988 clock IDs
  clk: mediatek: mt8188-topckgen: Refactor parents for top_dp/edp muxes
  clk: mediatek: mt8195-topckgen: Refactor parents for top_dp/edp muxes
  clk: mediatek: clk-mux: Support custom parent indices for muxes
  dt-bindings: clock: sophgo: Add clock controller of CV1800 series SoC
  clk: starfive: jh7100: Add CLK_SET_RATE_PARENT to gmac_tx
  clk: starfive: Add flags argument to JH71X0__MUX macro
  clk: imx: pll14xx: change naming of fvco to fout
  clk: imx: clk-imx8qxp: fix LVDS bypass, pixel and phy clocks
  clk: imx: scu: Fix memory leak in __imx_clk_gpr_scu()
  clk: fixed-rate: fix clk_hw_register_fixed_rate_with_accuracy_parent_hw
  clk: qcom: dispcc-sm8650: Add test_ctl parameters to PLL config
  clk: qcom: gpucc-sm8650: Add test_ctl parameters to PLL config
  clk: qcom: dispcc-sm8550: Use the correct PLL configuration function
  clk: qcom: dispcc-sm8550: Update disp PLL settings
  clk: qcom: gpucc-sm8550: Update GPU PLL settings
  ...

Pull gpio updates from Bartosz Golaszewski:
 "We have two new drivers, an assortment of updates and cleanups to many
  others, and first part of the big rework of the core GPIOLIB that's
  currently underway.

  Add to that some code shrink in the character device module and
  updates to DT bindings and that's pretty much it.

  Core GPIOLIB:
   - protect the global list of GPIO devices with a read-write semaphore
     as it is rarely modified but can be traversed by multiple readers
     at once
   - remove GPIO devices from the global list when they are
     *unregistered* and not when they are *released* (which only happens
     when the last reference is dropped) as this may lead to a
     successful lookup of an unregistered device
   - remove the unnecessary "extra_checks" switch
   - rename functions that are called with a lock taken
   - remove duplicate includes

  Character device handling:
   - use locking guards to reduce the code size
   - allocate the big linereq structure using the more suitable
     kvzalloc()
   - redulce the size of critical sections
   - improve documentation
   - move the debounce_period_us field out of struct gpio_desc

  New drivers:
   - Nuvoton NPCM SGPIO driver for BMC NPCM7xx/NPCM8xx
   - Realtek DHC (Digital Home Center) SoC GPIO driver

  Driver improvements:
   - replace gpiochip_is_requested() with a safer alternative in the
     form of gpiochip_dup_line_label() as the former returns a pointer
     to a string that can be deleted
   - implement the dbg_show() callback in gpio-sim
   - improve the coding style for local variables by removing
     unnecessary tabs
   - use generic device properties instead of OF variants in gpio-mmio
   - use the preferred coding style for __free() in gpio-mockup
   - reuse PM ops from the gpio-tangier in gpio-elkhartlake
   - rework PM and use cleanup helpers in gpio-tangier
   - fix the EIC configuration in gpio-pmic-eic-sprd
   - remove the unneeded call to platform_set_drvdata() in gpio-sifive
   - use generic GPIO helpers for driver callbacks in gpio-dwapb
   - add clock support on certain pins of gpio-ixp4xx
   - don't use the core-specific DEBUG_GPIO switch in drivers
   - kerneldoc improvements

  DT bindings:
   - add bindings for the new Realtek and Nuvoton devices
   - allow gpio-ranges in gpio-dwapb
   - support GPIO hogs in gpio-rockchip
   - describe the label property in gpio-zynqmp-modepin

  Other:
   - header cleanups
   - forward declarations cleanups"

* tag 'gpio-updates-for-v6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (55 commits)
  gpiolib: replace the GPIO device mutex with a read-write semaphore
  gpiolib: remove the GPIO device from the list when it's unregistered
  gpio: nuvoton: Add Nuvoton NPCM sgpio driver
  dt-bindings: gpio: add NPCM sgpio driver bindings
  gpio: rtd: Add support for Realtek DHC(Digital Home Center) RTD SoCs
  dt-bindings: gpio: realtek: Add realtek,rtd-gpio
  gpio: pmic-eic-sprd: Configure the bit corresponding to the EIC through offset
  gpio: dwapb: Use generic request, free and set_config
  gpio: sysfs: drop tabs from local variable declarations
  gpiolib: drop tabs from local variable declarations
  gpiolib: remove extra_checks
  gpio: tps65219: don't use CONFIG_DEBUG_GPIO
  gpiolib: cdev: replace locking wrappers for gpio_device with guards
  gpiolib: cdev: replace locking wrappers for config_mutex with guards
  gpiolib: cdev: allocate linereq using kvzalloc()
  gpiolib: cdev: include overflow.h
  gpiolib: cdev: reduce locking in gpio_desc_to_lineinfo()
  gpiolib: cdev: improve documentation of get/set values
  gpiolib: cdev: fully adopt guard() and scoped_guard()
  gpiolib: remove debounce_period_us from struct gpio_desc
  ...

Pull watchdog updates from Wim Van Sebroeck:

 - Add Mediatek MT7988 watchdog

 - Add IT8659 watchdog

 - watchdog: set cdev owner before adding

 - hpwdt: Only claim UNKNOWN NMI if from iLO

 - Various other fixes and improvements

* tag 'linux-watchdog-6.8-rc1' of git://www.linux-watchdog.org/linux-watchdog: (30 commits)
  watchdog: mlx_wdt: fix all kernel-doc warnings
  dt-bindings: watchdog: qcom,pm8916-wdt: add parent spmi node to example
  dt-bindings: watchdog: nxp,pnx4008-wdt: convert txt to yaml
  dt-bindings: watchdog: qca,ar7130-wdt: convert txt to yaml
  dt-bindings: watchdog: intel,keembay: reference common watchdog schema
  dt-bindings: watchdog: re-order entries to match coding convention
  watchdog: it87_wdt: Keep WDTCTRL bit 3 unmodified for IT8784/IT8786
  watchdog: it87_wdt: Add IT8659 ID
  watchdog: it87_wdt: Remove redundant max_units setting
  watchdog: it87_wdt: add blank line after variable declaration
  dt-bindings: wdt: Add ts72xx
  dt-bindings: watchdog: dlg,da9062-watchdog: Document DA9063 watchdog
  dt-bindings: watchdog: dlg,da9062-watchdog: Add fallback for DA9061 watchdog
  watchdog: rti_wdt: Drop runtime pm reference count when watchdog is unused
  watchdog: starfive: add lock annotations to fix context imbalances
  watchdog: mediatek: mt7988: add wdt support
  dt-bindings: watchdog: mediatek,mtk-wdt: add MT7988 watchdog and toprgu
  dt-bindings: watchdog: realtek,rtd1295-watchdog: convert txt to yaml
  watchdog: bcm2835_wdt: Fix WDIOC_SETTIMEOUT handling
  watchdog/hpwdt: Remove unused variable
  ...

Pull hwmon updates from Guenter Roeck:
 "New drivers:
   - pmbus: Support for MPS Multi-phase mp2856/mp2857 controller
   - pmbus: Support for MPS Multi-phase mp5990
   - Driver for Gigabyte AORUS Waterforce AIO coolers

  Added support to existing drivers:
   - lm75: Support for AMS AS6200 temperature sensor
   - k10temp: Support for AMD Family 19h Model 8h
   - max31827: Support for max31828 and max31829
   - sht3x: Support for sts3x
   - Add support for WMI SMM interface, and various related improvements.
    Add support for Optiplex 7000
   - emc1403: Support for EMC1442
   - npcm750-pwm-fan: Support for NPCM8xx
   - nct6775: Add support for 2 additional fan controls

  Minor improvements and bug fixes:
   - gigabyte_waterforce: Mark status report as received under a spinlock
   - aquacomputer_d5next: Remove unneeded CONFIG_DEBUG_FS #ifdef
   - gpio-fan: Convert txt bindings to yaml
   - smsc47m1: Various cleanups / improvements
   - corsair-cpro: use NULL instead of 0
   - hp-wmi-sensors: Fix failure to load on EliteDesk 800 G6
   - tmp513: Various cleanups
   - peci/dimmtemp: Bump timeout
   - pc87360: Bounds check data->innr usage
   - nct6775: Fix fan speed set failure in automatic mode
   - ABI: sysfs-class-hwmon: document various missing attributes
   - lm25066, max6650, nct6775: Use i2c_get_match_data()
   - aspeed-pwm-tacho: Fix -Wstringop-overflow warning"

* tag 'hwmon-for-v6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (59 commits)
  hwmon: (gigabyte_waterforce) Mark status report as received under a spinlock
  hwmon: (lm75) Fix tmp112 default config
  hwmon: (lm75) Add AMS AS6200 temperature sensor
  dt-bindings: hwmon: (lm75) Add AMS AS6200 temperature sensor
  hwmon: (lm75) remove now-unused include
  hwmon: (pmbus) Add support for MPS Multi-phase mp2856/mp2857 controller
  dt-bindings: Add MP2856/MP2857 voltage regulator device
  hwmon: (aquacomputer_d5next) Remove unneeded CONFIG_DEBUG_FS #ifdef
  dt-bindings: hwmon: gpio-fan: Convert txt bindings to yaml
  hwmon: (k10temp) Add support for AMD Family 19h Model 8h
  hwmon: Add driver for Gigabyte AORUS Waterforce AIO coolers
  hwmon: (smsc47m1) Rename global platform device variable
  hwmon: (smsc47m1) Simplify device registration
  hwmon: (smsc47m1) Convert to platform remove callback returning void
  hwmon: (smsc47m1) Mark driver struct with __refdata to prevent section mismatch
  MAINTAINERS: Add maintainer for Baikal-T1 PVT hwmon driver
  hwmon: (sht3x) add sts3x support
  hwmon: (pmbus) Add ltc4286 driver
  dt-bindings: hwmon: Add lltc ltc4286 driver bindings
  hwmon: (max31827) Add custom attribute for resolution
  ...

Pull sound updates from Takashi Iwai:
 "It was a calm development cycle. There were an ALSA core extension for
  subformat PCM bits and a few ASoC core changes to support N:M
  mappings, while the most of remaining changes are driver-specific.

  Core:
   - API extensions for properly limiting PCM format bits via subformat
   - Enhanced support for N:M CPU:CODEC mappings in the core and in
     audio-graph-card2

  ASoC:
   - Lots of SOF updates: fallback support to older IPC versions,
     notification on control changes with IPC4. Also supports for ACPI
     parse for the ES83xx driver that reduces quirks.
   - Device tree support for describing parts of the card which can be
     active over suspend (for very low power playback or wake word use
     cases)
   - Support for more AMD and Intel systems, NXP i.MX8m MICFIL, Qualcomm
     SM8250, SM8550, SM8650 and X1E80100
   - Drop of Freescale MPC8610 code that is no longer supported

  HD-audio:
   - More CS35L41 codec extensions for Dell, HP and Lenovo models
   - TAS2781 codec extensions for Lenovo and co
   - New PCM subformat supports

  Others:
   - More enhancement for Scarlett2 USB mixer support
   - Various kselftest fixes"

* tag 'sound-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (337 commits)
  kselftest/alsa - conf: Stringify the printed errno in sysfs_get()
  kselftest/alsa - mixer-test: Fix the print format specifier warning
  kselftest/alsa - mixer-test: Fix the print format specifier warning
  kselftest/alsa - mixer-test: fix the number of parameters to ksft_exit_fail_msg()
  ALSA: hda/tas2781: annotate calibration data endianness
  ALSA: hda/realtek: Fix mute and mic-mute LEDs for HP Envy X360 13-ay0xxx
  ALSA: hda/conexant: Fix headset auto detect fail in cx8070 and SN6140
  ALSA: ac97: fix build regression
  ALSA: hda: cs35l41: Support more HP models without _DSD
  ALSA: hda/tas2781: add fixup for Lenovo 14ARB7
  ALSA: hda/tas2781: add TAS2563 support for 14ARB7
  ALSA: hda/tas2781: add configurable global i2c address
  ALSA: hda/tas2781: add ptrs to calibration functions
  ALSA: hda: Add driver properties for cs35l41 for Lenovo Legion Slim 7 Gen 8 serie
  ALSA: hda/realtek: enable SND_PCI_QUIRK for Lenovo Legion Slim 7 Gen 8 (2023) serie
  ALSA: hda/tas2781: configure the amp after firmware load
  ALSA: mark all struct bus_type as const
  ASoC: pxa: sspa: Don't select SND_ARM
  ASoC: rt5663: cancel the work when system suspends
  ALSA: scarlett2: Add PCM Input Switch for Solo Gen 4
  ...

Pull drm updates from Dave Airlie:
 "This contains two major new drivers:

   - imagination is a first driver for Imagination Technologies devices,
     it only covers very specific devices, but there is hope to grow it

   - xe is a reboot of the i915 GPU (shares display) side using a more
     upstream focused development model, and trying to maximise code
     sharing. It's not enabled for any hw by default, and will hopefully
     get switched on for Intel's Lunarlake.

  This also drops a bunch of the old UMS ioctls. It's been dead long
  enough.

  amdgpu has a bunch of new color management code that is being used in
  the Steam Deck.

  amdgpu also has a new ACPI WBRF interaction to help avoid radio
  interference.

  Otherwise it's the usual lots of changes in lots of places.

  Detailed summary:

  new drivers:
   - imagination - new driver for Imagination Technologies GPU
   - xe - new driver for Intel GPUs using core drm concepts

  core:
   - add CLOSE_FB ioctl
   - remove old UMS ioctls
   - increase max objects to accomodate AMD color mgmt

  encoder:
   - create per-encoder debugfs directory

  edid:
   - split out drm_eld
   - SAD helpers
   - drop edid_firmware module parameter

  format-helper:
   - cache format conversion buffers

  sched:
   - move from kthread to workqueue
   - rename some internals
   - implement dynamic job-flow control

  gpuvm:
   - provide more features to handle GEM objects

  client:
   - don't acquire module reference

  displayport:
   - add mst path property documentation

  fdinfo:
   - alignment fix

  dma-buf:
   - add fence timestamp helper
   - add fence deadline support

  bridge:
   - transparent aux-bridge for DP/USB-C
   - lt8912b: add suspend/resume support and power regulator support

  panel:
   - edp: AUO B116XTN02, BOE NT116WHM-N21,836X2, NV116WHM-N49
   - chromebook panel support
   - elida-kd35t133: rework pm
   - powkiddy RK2023 panel
   - himax-hx8394: drop prepare/unprepare and shutdown logic
   - BOE BP101WX1-100, Powkiddy X55, Ampire AM8001280G
   - Evervision VGG644804, SDC ATNA45AF01
   - nv3052c: register docs, init sequence fixes, fascontek FS035VG158
   - st7701: Anbernic RG-ARC support
   - r63353 panel controller
   - Ilitek ILI9805 panel controller
   - AUO G156HAN04.0

  simplefb:
   - support memory regions
   - support power domains

  amdgpu:
   - add new 64-bit sequence number infrastructure
   - add AMD specific color management
   - ACPI WBRF support for RF interference handling
   - GPUVM updates
   - RAS updates
   - DCN 3.5 updates
   - Rework PCIe link speed handling
   - Document GPU reset types
   - DMUB fixes
   - eDP fixes
   - NBIO 7.9/7.11 updates
   - SubVP updates
   - XGMI PCIe state dumping for aqua vanjaram
   - GFX11 golden register updates
   - enable tunnelling on high pri compute

  amdkfd:
   - Migrate TLB flushing logic to amdgpu
   - Trap handler fixes
   - Fix restore workers handling on suspend/resume
   - Fix possible memory leak in pqm_uninit()
   - support import/export of dma-bufs using GEM handles

  radeon:
   - fix possible overflows in command buffer checking
   - check for errors in ring_lock

  i915:
   - reorg display code for reuse in xe driver
   - fdinfo memory stats printing
   - DP MST bandwidth mgmt improvements
   - DP panel replay enabling
   - MTL C20 phy state verification
   - MTL DP DSC fractional bpp support
   - Audio fastset support
   - use dma_fence interfaces instead of i915_sw_fence
   - Separate gem and display code
   - AUX register macro refactoring
   - Separate display module/device parameters
   - Move display capabilities debugfs under display
   - Makefile cleanups
   - Register cleanups
   - Move display lock inits under display/
   - VLV/CHV DPIO PHY register and interface refactoring
   - DSI VBT sequence refactoring
   - C10/C20 PHY PLL hardware readout
   - DPLL code cleanups
   - Cleanup PXP plane protection checks
   - Improve display debug msgs
   - PSR selective fetch fixes/improvements
   - DP MST fixes
   - Xe2LPD FBC restrictions removed
   - DGFX uses direct VBT pin mapping
   - more MTL WAs
   - fix MTL eDP bug
   - eliminate use of kmap_atomic

  habanalabs:
   - sysfs entry to identify a device minor id with debugfs path
   - sysfs entry to expose device module id
   - add signed device info retrieval through INFO ioctl
   - add Gaudi2C device support
   - pcie reset prepare/done hooks

  msm:
   - Add support for SDM670, SM8650
   - Handle the CFG interconnect to fix the obscure hangs / timeouts
   - Kconfig fix for QMP dependency
   - use managed allocators
   - DPU: SDM670, SM8650 support
   - DPU: Enable SmartDMA on SM8350 and SM8450
   - DP: enable runtime PM support
   - GPU: add metadata UAPI
   - GPU: move devcoredumps to GPU device
   - GPU: convert to drm_exec

  ivpu:
   - update FW API
   - new debugfs file
   - a new NOP job submission test mode
   - improve suspend/resume
   - PM improvements
   - MMU PT optimizations
   - firmware profile frequency support
   - support for uncached buffers
   - switch to gem shmem helpers
   - replace kthread with threaded irqs

  rockchip:
   - rk3066_hdmi: convert to atomic
   - vop2: support nv20 and nv30
   - rk3588 support

  mediatek:
   - use devm_platform_ioremap_resource
   - stop using iommu_present
   - MT8188 VDOSYS1 display support

  panfrost:
   - PM improvements
   - improve interrupt handling as poweroff

  qaic:
   - allow to run with single MSI
   - support host/device time sync
   - switch to persistent DRM devices

  exynos:
   - fix potential error pointer dereference
   - fix wrong error checking
   - add missing call to drm_atomic_helper_shutdown

  omapdrm:
   - dma-fence lockdep annotation fix

  tidss:
   - dma-fence lockdep annotation fix
   - support for AM62A7

  v3d:
   - BCM2712 - rpi5 support
   - fdinfo + gputop support
   - uapi for CPU job handling

  virtio-gpu:
   - add context debug name"

* tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm: (2340 commits)
  drm/amd/display: Allow z8/z10 from driver
  drm/amd/display: fix bandwidth validation failure on DCN 2.1
  drm/amdgpu: apply the RV2 system aperture fix to RN/CZN as well
  drm/amd/display: Move fixpt_from_s3132 to amdgpu_dm
  drm/amd/display: Fix recent checkpatch errors in amdgpu_dm
  Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
  drm/amd/display: avoid stringop-overflow warnings for dp_decide_lane_settings()
  drm/amd/display: Fix power_helpers.c codestyle
  drm/amd/display: Fix hdcp_log.h codestyle
  drm/amd/display: Fix hdcp2_execution.c codestyle
  drm/amd/display: Fix hdcp_psp.h codestyle
  drm/amd/display: Fix freesync.c codestyle
  drm/amd/display: Fix hdcp_psp.c codestyle
  drm/amd/display: Fix hdcp1_execution.c codestyle
  drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
  drm/amdkfd: Fix iterator used outside loop in 'kfd_add_peer_prop()'
  drm/amdgpu: Drop 'fence' check in 'to_amdgpu_amdkfd_fence()'
  drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
  drm/amdgpu: Fix '*fw' from request_firmware() not released in 'amdgpu_ucode_request()'
  drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'
  ...

From looking at the PCI IDs, every device supported by intelfb is
also supported by i915. Anyone still using intelfb should please
move on to i915, which does everything intelfb does but better.

Removing intelfb is motivated by the driver's excessive use of the
global screen_info state. The state belongs to architecture and
firmware code; device drivers should not attempt to access it. But
fixing intelfb would require a significant change in the driver's
probing logic. As intelfb has been obsolete for nearly 2 decades,
it is probably not worth the effort. Let's just remove it. Also
remove the related documentation.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Maik Broemme <mbroemme@libmpq.org>
Signed-off-by: Helge Deller <deller@gmx.de>

Do not clear the global instance of screen_info. If necessary, clearing
fields in screen_info should be done by architecture or firmware code
that maintains the firmware framebuffer.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>

After consuming the global screen_info_state in sysfb_init(), the
created platform device maintains the firmware framebuffer. Clear
screen_info to avoid conflicting access. Subsequent kexec reboots
now ignore the firmware framebuffer.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>

Replace use of screen_info state with the correct interfaces from
the aperture helpers. The state is only for architecture and firmware
code. It is not guaranteed to contain valid data. Drivers are thus
not allowed to use it.

For removing conflicting firmware framebuffers, there are aperture
helpers. Hence replace screen_info with the correct functions that will
remove conflicting framebuffers for the hypervfb driver. For GEN1 PCI
devices, the driver reads the framebuffer base and size from the PCI
BAR, and uses the range for removing the firmware framebuffer. For
GEN2 VMBUS devices no range can be detected, so the driver clears all
firmware framebuffers.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>

Replace use of screen_info state with the correct interface from
the aperture helpers. The state is only for architecture and firmware
code. It is not guaranteed to contain valid data. Drivers are thus
not allowed to use it.

For removing conflicting firmware framebuffers, there are aperture
helpers. Hence replace screen_info with the correct function that will
remove conflicting framebuffers for the hyperv-drm driver. Also
move the call to the correct place within the driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Helge Deller <deller@gmx.de>

When built-in, the sis driver tries to detect the current display mode
from the global screen_info state. That state is only for architecture
and firmware code. Drivers should not use it directly as it's not
guaranteed to contain valid information.

Remove the mode-detection code from sis. Drivers that want to detect a
pre-set mode on probe should read the hardware registers directly.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>

Currently the %d format specifier is being used for unsigned int values.
Fix this by using the correct %u format specifier. Cleans up cppcheck
warnings:

warning: %d in format string (no. 1) requires 'int' but the argument
type is 'unsigned int'. [invalidPrintfArgType_sint]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Helge Deller <deller@gmx.de>

The info field in struct sti_struct was used to detect the default
display device. That test is now done with the respective Linux device
and the info field is unused. Remove it.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>

Update fb_is_primary device() on parisc to detect the primary display
device from the Linux device instance. Aligns the code with the other
architectures. A later patch will remove the fbdev dependency from the
function's interface.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>

Allocate stifb's instance of fb_info with framebuffer_alloc(). This
is the preferred way of creating fb_info with associated driver data
stored in struct fb_info.par. Requires several, but minor, changes
through out the driver's code.

The intended side effect of this patch is that the new instance of
struct fb_info now has its device field correctly set to the parent
device of the STI ROM. A later patch can detect if the device is the
firmware's primary output. It is also now correctly located within
the Linux device hierarchy.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>

Store the ROM's parent device in each STI struct, so we can associate
the STI framebuffer with a device.

The new field will eventually replace the fbdev subsystem's info field,
which the function fb_is_primary_device() currently requires to detect
the firmware's output. By using the device instead of the framebuffer
info, a later patch can generalize the helper for use in non-fbdev code.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Helge Deller <deller@gmx.de>

When framebuffer gets closed, the queued deferred IO gets cancelled. This
can cause some last display data to vanish. This is problematic for users
who send a still image to the framebuffer, then close the file: the image
may never appear.

To ensure none of display data get lost, flush the queued deferred IO
first before closing.

Another possible solution is to delete the cancel_delayed_work_sync()
instead. The difference is that the display may appear some time after
closing. However, the clearing of page mapping after this needs to be
removed too, because the page mapping is used by the deferred work. It is
not completely obvious whether it is okay to not clear the page mapping.
For a patch intended for stable trees, go with the simple and obvious
solution.

Fixes: 60b59bea ("fbdev: mm: Deferred IO support")
Cc: stable@vger.kernel.org
Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>

The driver's fsync() is supposed to flush any pending operation to
hardware. It is implemented in this driver by cancelling the queued
deferred IO first, then schedule it for "immediate execution" by calling
schedule_delayed_work() again with delay=0. However, setting delay=0
only means the work is scheduled immediately, it does not mean the work
is executed immediately. There is no guarantee that the work is finished
after schedule_delayed_work() returns. After this driver's fsync()
returns, there can still be pending work. Furthermore, if close() is
called by users immediately after fsync(), the pending work gets
cancelled and fsync() may do nothing.

To ensure that the deferred IO completes, use flush_delayed_work()
instead. Write operations to this driver either write to the device
directly, or invoke schedule_delayed_work(); so by flushing the
workqueue, it can be guaranteed that all previous writes make it to the
device.

Fixes: 5e841b88 ("fb: fsync() method for deferred I/O flush.")
Cc: stable@vger.kernel.org
Signed-off-by: Nam Cao <namcao@linutronix.de>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Helge Deller <deller@gmx.de>

We have managed to ascertain that all users of the old FBDEV
code that are out of tree are now gone.

The new DRM driver can be found in drivers/gpu/drm/pl111/.

The remaining out of tree user was the ARM FVP emulation
platform, running Android. Thanks to changes in Android
versions 13 and 14, Android can now use the DRM driver when
being emulated under FVP. Some final patches are being put
in place to make it fully featured.

This is essentially a revert of the partial revert in
commit 112c3523 ("Partially revert "video: fbdev: amba-clcd: Retire elder CLCD driver"")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Helge Deller <deller@gmx.de>