In order to support runtime timeslot route changes, enable the
channel timeslot entries at channel start() and disable them at
channel stop().
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-16-herve.codina@bootlin.com

In order to support runtime timeslot route changes, some operations will
be different according the routing table used (common Rx and Tx table or
one table for Rx and one for Tx).

The is_tsa_64rxtx flag is introduced to avoid extra computation to
determine the table format each time we need it.
It is set once at initialization.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-15-herve.codina@bootlin.com

The Tx and Rx entries for a given channel are set in one function.

In order to modify Rx entries and Tx entries independently of one other,
split this function in one for the Rx part and one for the Tx part.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-14-herve.codina@bootlin.com

In order to allow runtime timeslot route changes, disabling channel TSA
entries needs to be supported.

Add support for this new feature.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-13-herve.codina@bootlin.com

The timeslots checked in qmc_check_chans() are the timeslots used.
With the introduction of the available timeslots, the used timeslots
are a subset of the available timeslots. The timeslots checked during
the qmc_check_chans() call should be the available ones.

Simply update and check the available timeslots instead of the used
timeslots in qmc_check_chans().
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-12-herve.codina@bootlin.com

The newly introduced qmc_chan_setup_tsa* functions check that the
channel entries are not already used.
These checks are also performed by qmc_check_chans() and are no more
needed.

Remove them from qmc_check_chans().
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-11-herve.codina@bootlin.com

Introduce the qmc_chan_setup_tsa* functions to setup entries related
to the given channel.
Use them during QMC channels setup.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-10-herve.codina@bootlin.com

qmc_setup_tsa* are called once at initialisation.
They initialize the QMC TSA table.
In order to introduce setup function later on for dynamic timeslots
management, rename the function to avoid later confusion.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-9-herve.codina@bootlin.com

Available timeslots masks define timeslots available for the related
channel. These timeslots are defined by the QMC binding.

Timeslots used are initialized to available timeslots but can be a
subset of available timeslots.
This prepares the dynamic timeslots management (ie. changing timeslots
at runtime).
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-8-herve.codina@bootlin.com

QMC child devices support is needed to avoid orphan DT nodes that use a
simple DT phandle to reference a QMC channel.

Allow to instantiate child devices and also extend the API to get the
qmc_chan using a child device.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20231205152116.122512-7-herve.codina@bootlin.com

The inline function specifier is present on some functions but it is
better to let the compiler decide inlining or not these functions.

Remove inline specifiers.

Fixes: 3178d58e ("soc: fsl: cpm1: Add support for QMC")
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Suggested-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-6-herve.codina@bootlin.com

In HDLC mode, some status flags related to the data read transfer can be
set by the hardware and need to be known by a QMC consumer for further
analysis.

Extend the API in order to provide these transfer status flags at the
read complete() call.

In TRANSPARENT mode, these flags have no meaning. Keep only one read
complete() API and update the consumers working in transparent mode.
In this case, the newly introduced flags parameter is simply unused.
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-5-herve.codina@bootlin.com

The qmc_chan_reset_rx() set the is_rx_stopped flag. This leads to an
inconsistent state in the following sequence.
    qmc_chan_stop()
    qmc_chan_reset()
Indeed, after the qmc_chan_reset() call, the channel must still be
stopped. Only a qmc_chan_start() call can move the channel from stopped
state to started state.

Fix the issue removing the is_rx_stopped flag setting from
qmc_chan_reset()

Fixes: 3178d58e ("soc: fsl: cpm1: Add support for QMC")
Cc: stable@vger.kernel.org
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-4-herve.codina@bootlin.com

Running sparse (make C=1) on qmc.c raises a lot of warning such as:
  ...
  warning: incorrect type in assignment (different address spaces)
     expected struct cpm_buf_desc [usertype] *[noderef] __iomem bd
     got struct cpm_buf_desc [noderef] [usertype] __iomem *txbd_free
  ...

Indeed, some variable were declared 'type *__iomem var' instead of
'type __iomem *var'.

Use the correct declaration to remove these warnings.

Fixes: 3178d58e ("soc: fsl: cpm1: Add support for QMC")
Cc: stable@vger.kernel.org
Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-3-herve.codina@bootlin.com

Running sparse (make C=1) on tsa.c raises a lot of warning such as:
  --- 8< ---
  warning: incorrect type in assignment (different address spaces)
     expected void *[noderef] si_regs
     got void [noderef] __iomem *
  --- 8< ---

Indeed, some variable were declared 'type *__iomem var' instead of
'type __iomem *var'.

Use the correct declaration to remove these warnings.

Fixes: 1d4ba0b8 ("soc: fsl: cpm1: Add support for TSA")
Cc: stable@vger.kernel.org
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202312051959.9YdRIYbg-lkp@intel.com/Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-2-herve.codina@bootlin.com

Pull tracing fixes from Steven Rostedt::
 "Eventfs fixes:

   - With the usage of simple_recursive_remove() recommended by Al Viro,
     the code should not be calling "d_invalidate()" itself. Doing so is
     causing crashes. The code was calling d_invalidate() on the race of
     trying to look up a file while the parent was being deleted. This
     was detected, and the added dentry was having d_invalidate() called
     on it, but the deletion of the directory was also calling
     d_invalidate() on that same dentry.

   - A fix to not free the eventfs_inode (ei) until the last dput() was
     called on its ei->dentry made the ei->dentry exist even after it
     was marked for free by setting the ei->is_freed. But code elsewhere
     still was checking if ei->dentry was NULL if ei->is_freed is set
     and would trigger WARN_ON if that was the case. That's no longer
     true and there should not be any warnings when it is true.

   - Use GFP_NOFS for allocations done under eventfs_mutex. The
     eventfs_mutex can be taken on file system reclaim, make sure that
     allocations done under that mutex do not trigger file system
     reclaim.

   - Clean up code by moving the taking of inode_lock out of the helper
     functions and into where they are needed, and not use the parameter
     to know to take it or not. It must always be held but some callers
     of the helper function have it taken when they were called.

   - Warn if the inode_lock is not held in the helper functions.

   - Warn if eventfs_start_creating() is called without a parent. As
     eventfs is underneath tracefs, all files created will have a parent
     (the top one will have a tracefs parent).

  Tracing update:

   - Add Mathieu Desnoyers as an official reviewer of the tracing subsystem"

* tag 'trace-v6.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  MAINTAINERS: TRACING: Add Mathieu Desnoyers as Reviewer
  eventfs: Make sure that parent->d_inode is locked in creating files/dirs
  eventfs: Do not allow NULL parent to eventfs_start_creating()
  eventfs: Move taking of inode_lock into dcache_dir_open_wrapper()
  eventfs: Use GFP_NOFS for allocation when eventfs_mutex is held
  eventfs: Do not invalidate dentry in create_file/dir_dentry()
  eventfs: Remove expectation that ei->is_freed means ei->dentry == NULL

Pull parisc architecture fixes from Helge Deller:
 "This patchset fixes and enforces correct section alignments for the
  ex_table, altinstructions, parisc_unwind, jump_table and bug_table
  which are created by inline assembly.

  Due to not being correctly aligned at link & load time they can
  trigger unnecessarily the kernel unaligned exception handler at
  runtime. While at it, I switched the bug table to use relative
  addresses which reduces the size of the table by half on 64-bit.

  We still had the ENOSYM and EREMOTERELEASE errno symbols as left-overs
  from HP-UX, which now trigger build-issues with glibc. We can simply
  remove them.

  Most of the patches are tagged for stable kernel series.

  Summary:

   - Drop HP-UX ENOSYM and EREMOTERELEASE return codes to avoid glibc
     build issues

   - Fix section alignments for ex_table, altinstructions, parisc unwind
     table, jump_table and bug_table

   - Reduce size of bug_table on 64-bit kernel by using relative
     pointers"

* tag 'parisc-for-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Reduce size of the bug_table on 64-bit kernel by half
  parisc: Drop the HP-UX ENOSYM and EREMOTERELEASE error codes
  parisc: Use natural CPU alignment for bug_table
  parisc: Ensure 32-bit alignment on parisc unwind section
  parisc: Mark lock_aligned variables 16-byte aligned on SMP
  parisc: Mark jump_table naturally aligned
  parisc: Mark altinstructions read-only and 32-bit aligned
  parisc: Mark ex_table entries 32-bit aligned in uaccess.h
  parisc: Mark ex_table entries 32-bit aligned in assembly.h

Pull x86 microcode fixes from Ingo Molnar:
 "Fix/enhance x86 microcode version reporting: fix the bootup log spam,
  and remove the driver version announcement to avoid version confusion
  when distros backport fixes"

* tag 'x86-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode: Rework early revisions reporting
  x86/microcode: Remove the driver announcement and version

Pull x86 perf event fix from Ingo Molnar:
 "Fix a bug in the Intel hybrid CPUs hardware-capabilities enumeration
  code resulting in non-working events on those platforms"

* tag 'perf-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Correct incorrect 'or' operation for PMU capabilities

Pull locking fix from Ingo Molnar:
 "Fix lockdep block chain corruption resulting in KASAN warnings"

* tag 'locking-urgent-2023-11-26' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep: Fix block chain corruption

Pull smb client fixes from Steve French:

 - use after free fix in releasing multichannel interfaces

 - fixes for special file types (report char, block, FIFOs properly when
   created e.g. by NFS to Windows)

 - fixes for reporting various special file types and symlinks properly
   when using SMB1

* tag '6.7-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  smb: client: introduce cifs_sfu_make_node()
  smb: client: set correct file type from NFS reparse points
  smb: client: introduce ->parse_reparse_point()
  smb: client: implement ->query_reparse_point() for SMB1
  cifs: fix use after free for iface while disabling secondary channels

Pull USB / PHY / Thunderbolt fixes from Greg KH:
 "Here are a number of reverts, fixes, and new device ids for 6.7-rc3
  for the USB, PHY, and Thunderbolt driver subsystems. Include in here
  are:

   - reverts of some PHY drivers that went into 6.7-rc1 that shouldn't
     have been merged yet, the author is reworking them based on review
     comments as they were using older apis that shouldn't be used
     anymore for newer drivers

   - small thunderbolt driver fixes for reported issues

   - USB driver fixes for a variety of small issues in dwc3, typec,
     xhci, and other smaller drivers.

   - new device ids for usb-serial and onboard_usb_hub drivers.

  All of these have been in linux-next with no reported issues"

* tag 'usb-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (33 commits)
  USB: serial: option: add Luat Air72*U series products
  USB: dwc3: qcom: fix ACPI platform device leak
  USB: dwc3: qcom: fix software node leak on probe errors
  USB: dwc3: qcom: fix resource leaks on probe deferral
  USB: dwc3: qcom: simplify wakeup interrupt setup
  USB: dwc3: qcom: fix wakeup after probe deferral
  dt-bindings: usb: qcom,dwc3: fix example wakeup interrupt types
  usb: misc: onboard-hub: add support for Microchip USB5744
  dt-bindings: usb: microchip,usb5744: Add second supply
  usb: misc: ljca: Fix enumeration error on Dell Latitude 9420
  USB: serial: option: add Fibocom L7xx modules
  USB: xhci-plat: fix legacy PHY double init
  usb: typec: tipd: Supply also I2C driver data
  usb: xhci-mtk: fix in-ep's start-split check failure
  usb: dwc3: set the dma max_seg_size
  usb: config: fix iteration issue in 'usb_get_bos_descriptor()'
  usb: dwc3: add missing of_node_put and platform_device_put
  USB: dwc2: write HCINT with INTMASK applied
  usb: misc: ljca: Drop _ADR support to get ljca children devices
  usb: cdnsp: Fix deadlock issue during using NCM gadget
  ...

Pull xfs fix from Chandan Babu:

 - Validate quota records recovered from the log before writing them to
   the disk.

* tag 'xfs-6.7-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: dquot recovery does not validate the recovered dquot
  xfs: clean up dqblk extraction

Pull arm64 fixes from Catalin Marinas:

 - Fix "rodata=on" not disabling "rodata=full" on arm64

 - Add arm64 make dependency between vmlinuz.efi and Image, leading to
   occasional build failures previously (with parallel building)

 - Add newline to the output formatting of the za-fork kselftest

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: add dependency between vmlinuz.efi and Image
  kselftest/arm64: Fix output formatting for za-fork
  arm64: mm: Fix "rodata=on" when CONFIG_RODATA_FULL_DEFAULT_ENABLED=y

Pull xen fixes from Juergen Gross:

 - A small cleanup patch for the Xen privcmd driver

 - A fix for the swiotlb-xen driver which was missing the advertising of
   the maximum mapping length

 - A fix for Xen on Arm for a longstanding bug, which happened to occur
   only recently: a structure in percpu memory crossed a page boundary,
   which was rejected by the hypervisor

* tag 'for-linus-6.7a-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  arm/xen: fix xen_vcpu_info allocation alignment
  xen: privcmd: Replace zero-length array with flex-array member and use __counted_by
  swiotlb-xen: provide the "max_mapping_size" method

Enable GENERIC_BUG_RELATIVE_POINTERS which will store 32-bit relative
offsets to the bug address and the source file name instead of 64-bit
absolute addresses. This effectively reduces the size of the
bug_table[] array by half on 64-bit kernels.
Signed-off-by: Helge Deller <deller@gmx.de>

Those return codes are only defined for the parisc architecture and
are leftovers from when we wanted to be HP-UX compatible.

They are not returned by any Linux kernel syscall but do trigger
problems with the glibc strerrorname_np() and strerror() functions as
reported in glibc issue #31080.

There is no need to keep them, so simply remove them.
Signed-off-by: Helge Deller <deller@gmx.de>
Reported-by: Bruno Haible <bruno@clisp.org>
Closes: https://sourceware.org/bugzilla/show_bug.cgi?id=31080
Cc: stable@vger.kernel.org

Make sure that the __bug_table section gets 32- or 64-bit aligned,
depending if a 32- or 64-bit kernel is being built.
Mark it non-writeable and use .blockz instead of the .org assembler
directive to pad the struct.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

Make sure the .PARISC.unwind section will be 32-bit aligned.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

On parisc we need 16-byte alignment for variables which are used for
locking. Mark the __lock_aligned attribute acordingly so that the
.data..lock_aligned section will get that alignment in the generated
object files.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

The jump_table stores two 32-bit words and one 32- (on 32-bit kernel)
or one 64-bit word (on 64-bit kernel).
Ensure that the last word is always 64-bit aligned on a 64-bit kernel
by aligning the whole structure on sizeof(long).
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

Add an align statement to tell the linker that all ex_table entries and as
such the whole ex_table section should be 32-bit aligned in vmlinux and modules.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

Add an align statement to tell the linker that all ex_table entries and as
such the whole ex_table section should be 32-bit aligned in vmlinux and modules.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org   # v6.0+

Pull s390 updates from Alexander Gordeev:

 - Remove unnecessary assignment of the performance event last_tag.

 - Create missing /sys/firmware/ipl/* attributes when kernel is booted
   in dump mode using List-directed ECKD IPL.

 - Remove odd comment.

 - Fix s390-specific part of scripts/checkstack.pl script that only
   matches three-digit numbers starting with 3 or any higher number and
   skips any stack sizes smaller than 304 bytes.

* tag 's390-6.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  scripts/checkstack.pl: match all stack sizes for s390
  s390: remove odd comment
  s390/ipl: add missing IPL_TYPE_ECKD_DUMP case to ipl_init()
  s390/pai: cleanup event initialization

Pull ACPI fixes from Rafael Wysocki:
 "These add an ACPI IRQ override quirk for ASUS ExpertBook B1402CVA and
  fix an ACPI processor idle issue leading to triple-faults in Xen HVM
  guests and an ACPI backlight driver issue that causes GPUs to
  misbehave while their children power is being fixed up.

  Specifics:

   - Avoid powering up GPUs while attempting to fix up power for their
     children (Hans de Goede)

   - Use raw_safe_halt() instead of safe_halt() in acpi_idle_play_dead()
     so as to avoid triple-falts during CPU online in Xen HVM guests due
     to the setting of the hardirqs_enabled flag in safe_halt() (David
     Woodhouse)

   - Add an ACPI IRQ override quirk for ASUS ExpertBook B1402CVA (Hans
     de Goede)"

* tag 'acpi-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI: resource: Skip IRQ override on ASUS ExpertBook B1402CVA
  ACPI: video: Use acpi_device_fix_up_power_children()
  ACPI: PM: Add acpi_device_fix_up_power_children() function
  ACPI: processor_idle: use raw_safe_halt() in acpi_idle_play_dead()

Pull power management fix from Rafael Wysocki:
 "Fix a syntax error in the sleepgraph utility which causes it to exit
  early on every invocation (David Woodhouse)"

* tag 'pm-6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: tools: Fix sleepgraph syntax error

Pull AFS fixes from David Howells:

 - Fix the afs_server_list struct to be cleaned up with RCU

 - Fix afs to translate a no-data result from a DNS lookup into ENOENT,
   not EDESTADDRREQ for consistency with OpenAFS

 - Fix afs to translate a negative DNS lookup result into ENOENT rather
   than EDESTADDRREQ

 - Fix file locking on R/O volumes to operate in local mode as the
   server doesn't handle exclusive locks on such files

 - Set SB_RDONLY on superblocks for RO and Backup volumes so that the
   VFS can see that they're read only

* tag 'afs-fixes-20231124' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  afs: Mark a superblock for an R/O or Backup volume as SB_RDONLY
  afs: Fix file locking on R/O volumes to operate in local mode
  afs: Return ENOENT if no cell DNS record can be found
  afs: Make error on cell lookup failure consistent with OpenAFS
  afs: Fix afs_server_list to be cleaned up with RCU

Merge ACPI backlight driver fixes and an ACPI processor driver fix for
6.7-rc3:

 - Avoid powering up GPUs while attempting to fix up power for their
   children (Hans de Goede).

 - Use raw_safe_halt() instead of safe_halt() in acpi_idle_play_dead()
   so as to avoid triple-falts during CPU online in Xen HVM guests due
   to the setting of the hardirqs_enabled flag in safe_halt() (David
   Woodhouse).

* acpi-video:
  ACPI: video: Use acpi_device_fix_up_power_children()
  ACPI: PM: Add acpi_device_fix_up_power_children() function

* acpi-processor:
  ACPI: processor_idle: use raw_safe_halt() in acpi_idle_play_dead()