- 15 Dec, 2020 33 commits
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Sebastian Reichel authored
Use dsi->channel everywhere, which originates from DT. Signed-off-by:
Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by:
Tomi Valkeinen <tomi.valkeinen@ti.com> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-16-tomi.valkeinen@ti.com
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Sebastian Reichel authored
Drop custom request_vc/release_vc callbacks by using the generic mipi_dsi_attach/mipi_dsi_detach functions. To use mipi_dsi_attach() we need to fill in the mipi_dsi_device fields, and some of these fields overlap with the fields in omap_dss_dsi_config. In later patches the latter will get dropped. Signed-off-by:
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Sebastian Reichel authored
After converting the driver to mipi_dsi_device we can use the generic message helpers to simplify the driver a lot. Signed-off-by:
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Sebastian Reichel authored
This moves from custom platform driver infrastructure to mipi_dsi_host and mipi_dsi_device. Note, that this is a graduate step and the driver only uses the devices types and transfer function, but not yet the new device binding style or drm_panel. Signed-off-by:
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Sebastian Reichel authored
Simplify the DSI encoder by using mipi_dsi_msg for dsi_vc_send_long and dsi_vc_send_short. Further improvements require cleaning up the channel allocation code first. Signed-off-by:
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Sebastian Reichel authored
Simplify the read related message handling by using the functionality provided by CONFIG_DRM_MIPI_DSI. Signed-off-by:
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Sebastian Reichel authored
Simplify the write related messages handling by using the functionality provided by CONFIG_DRM_MIPI_DSI. Signed-off-by:
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Sebastian Reichel authored
This drops the virtual channel logic. Afterwards DSI clients request their channel number and get the virtual channel with the same number or -EBUSY if already in use. The change here is not strictly speaking correct, as it combines the VC (DSI's "configuration block") and virtual channel ID (the ID sent in the DSI packets). But as we currently only support a single DSI command mode panel, this works fine: we always use VC0, and VC ID 0. This needs more work to support video mode panels, but that can be done after moving to DRM bridge and panel model, after which we can do that work with the proper APIs. Signed-off-by:
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Sebastian Reichel authored
After converting all DSI drivers, unexport the specific transfer functions. Signed-off-by:
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Sebastian Reichel authored
This converts the panel-dsi-cm driver to use the transfer API instead of specific functions, so that the specific functions can be unexported and squashed into the generic transfer function. Signed-off-by:
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Sebastian Reichel authored
This prepares the driver for becoming a mipi_dsi_host implementation, which provides a generic transfer function instead of all kind of different read/write functions. The implementation will become more elegant after unexporting the specific functions in the following patches. Signed-off-by:
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Sebastian Reichel authored
The write buffers are not modified, so they can be constant. Signed-off-by:
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Sebastian Reichel authored
This replaces OMAP specific enum for pixel format with common implementation. Signed-off-by:
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Sebastian Reichel authored
The panel-dsi-cm's ddata->pin_config is always NULL, so this callback is never called. Instead the DSI encoder gets the pin configuration directly from DT. Signed-off-by:
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Sebastian Reichel authored
This reverts commit e086558a ("drm/omap: dss: Remove unused omap_dss_device operations") This is still needed by DSI. E.g. unloading modules without this will cause a crash. Signed-off-by:
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Jyri Sarha authored
Adds support for COLOR_ENCODING and COLOR_RANGE properties to omap_plane.c and dispc.c. The supported encodings and ranges are presets are: For COLOR_ENCODING: - YCbCr BT.601 (default) - YCbCr BT.709 For COLOR_RANGE: - YCbCr limited range - YCbCr full range (default) Signed-off-by:
Jyri Sarha <jsarha@ti.com> Signed-off-by:
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Tomi Valkeinen authored
Drop "uapi/" and rearrange alphabetically. Signed-off-by:
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Jyri Sarha authored
Implement CTM color management property for OMAP CRTC using DSS overlay manager's Color Phase Rotation matrix. The CPR matrix does not exactly match the CTM property documentation. On DSS the CPR matrix is applied after gamma table look up. However, it seems stupid to add a custom property just for that. Signed-off-by:
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Tomi Valkeinen authored
omapdrm supports gamma via GAMMA_LUT property. However, the HW we have is: gamma -> ctm -> out instead of what the model DRM framework uses: ctm -> gamma -> out As the following patches add CTM support for omapdrm, lets first fix the gamma. This patch changes the property from GAMMA_LUT to DEGAMMA_LUT, and thus we will have: degamma -> ctm -> out and the legacy ioctl will continue working as before. Signed-off-by:
Pekka Paalanen <pekka.paalanen@collabora.com> Reviewed-by:
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Tomi Valkeinen authored
The DRM core handles legacy gamma-set ioctl by setting GAMMA_LUT and clearing CTM and DEGAMMA_LUT. This works fine on HW where we have either: degamma -> ctm -> gamma -> out or ctm -> gamma -> out However, if the HW has gamma table before ctm, the atomic property should be DEGAMMA_LUT, and thus we have: degamma -> ctm -> out This is fine for userspace which sets gamma table using the properties, as the userspace can check for the existence of gamma & degamma, but the legacy gamma-set ioctl does not work. Change the DRM core to use DEGAMMA_LUT instead of GAMMA_LUT when the latter is unavailable. Signed-off-by:
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Tomi Valkeinen authored
To support legacy gamma ioctls the drivers need to set drm_crtc_funcs.gamma_set either to a custom implementation or to drm_atomic_helper_legacy_gamma_set. Most of the atomic drivers do the latter. We can simplify this by making the core handle it automatically. Move the drm_atomic_helper_legacy_gamma_set() functionality into drm_color_mgmt.c to make drm_mode_gamma_set_ioctl() use drm_crtc_funcs.gamma_set if set or GAMMA_LUT property if not. Signed-off-by:
Philippe Cornu <philippe.cornu@st.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201211114237.213288-2-tomi.valkeinen@ti.com
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Zqiang authored
The dlfb_alloc_urb_list function is called in dlfb_usb_probe function, after that if an error occurs, the dlfb_free_urb_list function need to be called. BUG: memory leak unreferenced object 0xffff88810adde100 (size 32): comm "kworker/1:0", pid 17, jiffies 4294947788 (age 19.520s) hex dump (first 32 bytes): 10 30 c3 0d 81 88 ff ff c0 fa 63 12 81 88 ff ff .0........c..... 00 30 c3 0d 81 88 ff ff 80 d1 3a 08 81 88 ff ff .0........:..... backtrace: [<0000000019512953>] kmalloc include/linux/slab.h:552 [inline] [<0000000019512953>] kzalloc include/linux/slab.h:664 [inline] [<0000000019512953>] dlfb_alloc_urb_list drivers/video/fbdev/udlfb.c:1892 [inline] [<0000000019512953>] dlfb_usb_probe.cold+0x289/0x988 drivers/video/fbdev/udlfb.c:1704 [<0000000072160152>] usb_probe_interface+0x177/0x370 drivers/usb/core/driver.c:396 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 [<00000000463fbcb4>] __device_attach+0x122/0x250 drivers/base/dd.c:912 [<00000000b881a711>] bus_probe_device+0xc6/0xe0 drivers/base/bus.c:491 [<00000000364bbda5>] device_add+0x5ac/0xc30 drivers/base/core.c:2936 [<00000000eecca418>] usb_set_configuration+0x9de/0xb90 drivers/usb/core/message.c:2159 [<00000000edfeca2d>] usb_generic_driver_probe+0x8c/0xc0 drivers/usb/core/generic.c:238 [<000000001830872b>] usb_probe_device+0x5c/0x140 drivers/usb/core/driver.c:293 [<00000000a8d6726f>] really_probe+0x159/0x480 drivers/base/dd.c:554 [<00000000c3ce4b0e>] driver_probe_device+0x84/0x100 drivers/base/dd.c:738 [<00000000e942e01c>] __device_attach_driver+0xee/0x110 drivers/base/dd.c:844 [<00000000de0a5a5c>] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:431 Reported-by: syzbot+c9e365d7f450e8aa615d@syzkaller.appspotmail.com Signed-off-by:Zqiang <qiang.zhang@windriver.com> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20201215063022.16746-1-qiang.zhang@windriver.com
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Tian Tao authored
Fix the problem of dev being released twice. ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 75 PID: 15700 at lib/refcount.c:28 refcount_warn_saturate+0xd4/0x150 CPU: 75 PID: 15700 Comm: rmmod Tainted: G E 5.10.0-rc3+ #3 Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 0.88 07/24/2019 pstate: 40400009 (nZcv daif +PAN -UAO -TCO BTYPE=--) pc : refcount_warn_saturate+0xd4/0x150 lr : refcount_warn_saturate+0xd4/0x150 sp : ffff2028150cbc00 x29: ffff2028150cbc00 x28: ffff2028150121c0 x27: 0000000000000000 x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000003 x23: 0000000000000000 x22: ffff2028150cbc90 x21: ffff2020038a30a8 x20: ffff2028150cbc90 x19: ffff0020cd938020 x18: 0000000000000010 x17: 0000000000000000 x16: 0000000000000000 x15: ffffffffffffffff x14: ffff2028950cb88f x13: ffff2028150cb89d x12: 0000000000000000 x11: 0000000005f5e0ff x10: ffff2028150cb800 x9 : 00000000ffffffd0 x8 : 75203b776f6c6672 x7 : ffff800011a6f7c8 x6 : 0000000000000001 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000000 x2 : ffff202ffe2f9dc0 x1 : ffffa02fecf40000 x0 : 0000000000000026 Call trace: refcount_warn_saturate+0xd4/0x150 devm_drm_dev_init_release+0x50/0x70 devm_action_release+0x20/0x30 release_nodes+0x13c/0x218 devres_release_all+0x80/0x170 device_release_driver_internal+0x128/0x1f0 driver_detach+0x6c/0xe0 bus_remove_driver+0x74/0x100 driver_unregister+0x34/0x60 pci_unregister_driver+0x24/0xd8 hibmc_pci_driver_exit+0x14/0xe858 [hibmc_drm] __arm64_sys_delete_module+0x1fc/0x2d0 el0_svc_common.constprop.3+0xa8/0x188 do_el0_svc+0x80/0xa0 el0_sync_handler+0x8c/0xb0 el0_sync+0x15c/0x180 CPU: 75 PID: 15700 Comm: rmmod Tainted: G E 5.10.0-rc3+ #3 Hardware name: Huawei TaiShan 200 (Model 2280)/BC82AMDDA, BIOS 0.88 07/24/2019 Call trace: dump_backtrace+0x0/0x208 show_stack+0x2c/0x40 dump_stack+0xd8/0x10c __warn+0xac/0x128 report_bug+0xcc/0x180 bug_handler+0x24/0x78 call_break_hook+0x80/0xa0 brk_handler+0x28/0x68 do_debug_exception+0x9c/0x148 el1_sync_handler+0x7c/0x128 el1_sync+0x80/0x100 refcount_warn_saturate+0xd4/0x150 devm_drm_dev_init_release+0x50/0x70 devm_action_release+0x20/0x30 release_nodes+0x13c/0x218 devres_release_all+0x80/0x170 device_release_driver_internal+0x128/0x1f0 driver_detach+0x6c/0xe0 bus_remove_driver+0x74/0x100 driver_unregister+0x34/0x60 pci_unregister_driver+0x24/0xd8 hibmc_pci_driver_exit+0x14/0xe858 [hibmc_drm] __arm64_sys_delete_module+0x1fc/0x2d0 el0_svc_common.constprop.3+0xa8/0x188 do_el0_svc+0x80/0xa0 el0_sync_handler+0x8c/0xb0 el0_sync+0x15c/0x180 ---[ end trace 00718630d6e5ff18 ]--- Signed-off-by:
Tian Tao <tiantao6@hisilicon.com> Acked-by:
Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/1607941973-32287-1-git-send-email-tiantao6@hisilicon.com
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Maxime Ripard authored
Now that the semaphore is gone, our atomic_commit implementation is basically drm_atomic_helper_commit with a somewhat custom commit_tail, the main difference being that we're using wait_for_flip_done instead of wait_for_vblanks used in the drm_atomic_helper_commit_tail helper. Let's switch to using drm_atomic_helper_commit. Acked-by:
Maxime Ripard <maxime@cerno.tech> Link: https://patchwork.freedesktop.org/patch/msgid/20201204151138.1739736-8-maxime@cerno.tech
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Maxime Ripard authored
Now that we have proper ordering guaranteed by the previous patch, the semaphore is redundant and can be removed. Acked-by:
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Maxime Ripard authored
The HVS state now has both unassigned_channels that reflects the channels that are not used in the associated state, and the in_use boolean for each channel that says whether or not a particular channel is in use. Both express pretty much the same thing, and we need the in_use variable to properly track the commits, so let's get rid of unassigned_channels. Suggested-by:
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Maxime Ripard authored
If we're having two subsequent, non-blocking, commits on two different CRTCs that share no resources, there's no guarantee on the order of execution of both commits. However, the second one will consider the first one as the old state, and will be in charge of freeing it once that second commit is done. If the first commit happens after that second commit, it might access some resources related to its state that has been freed, resulting in a use-after-free bug. The standard DRM objects are protected against this, but our HVS private state isn't so let's make sure we wait for all the previous FIFO users to finish their commit before going with our own. Signed-off-by:
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Maxime Ripard authored
When we can't allocate a new channel, we can simply return instead of having to handle both cases, and that simplifies a bit the code. Reviewed-by:
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Maxime Ripard authored
The private objects have a gotcha that could result in a use-after-free, make sure it's properly documented. Reviewed-by:
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Maxime Ripard authored
Private objects storing a state shared across all CRTCs need to be carefully handled to avoid a use-after-free issue. The proper way to do this to track all the commits using that shared state and wait for the previous commits to be done before going on with the current one to avoid the reordering of commits that could occur. However, this commit setup needs to be done after drm_atomic_helper_setup_commit(), because before the CRTC commit structure hasn't been allocated before, and before the workqueue is scheduled, because we would be potentially reordered already otherwise. That means that drivers currently have to roll their own drm_atomic_helper_commit() function, even though it would be identical if not for the commit setup. Let's introduce a hook to do so that would be called as part of drm_atomic_helper_commit, allowing us to reuse the atomic helpers. Reviewed-by:
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Maarten Lankhorst authored
Required backmerge since we will be based on top of v5.11, and there has been a request to backmerge already to upstream some features. Signed-off-by:Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
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git://anongit.freedesktop.org/drm/drm-miscDaniel Vetter authored
drm-misc-next for 5.11: UAPI Changes: Cross-subsystem Changes: * char/agp: Disable frontend without CONFIG_DRM_LEGACY * mm: Fix fput in mmap error path; Introduce vma_set_file() to change vma->vm_file Core Changes: * dma-buf: Use sgtables in system heap; Move heap helpers to CMA-heap code; Skip sync for unmapped buffers; Alloc higher order pages is available; Respect num_fences when initializing shared fence list * doc: Improvements around DRM modes and SCALING_FILTER * Pass full state to connector atomic functions + callee updates * Cleanups * shmem: Map pages with caching by default; Cleanups * ttm: Fix DMA32 for global page pool * fbdev: Cleanups * fb-helper: Update framebuffer after userspace writes; Unmap console buffer during shutdown; Rework damage handling of shadow framebuffer Driver Changes: * amdgpu: Multi-hop fixes, Clenaups * imx: Fix rotation for Vivante tiled formats; Support nearest-neighour skaling; Cleanups * mcde: Fix RGB formats; Support DPI output; Cleanups * meson: HDMI clock fixes * panel: Add driver and bindings for Innolux N125HCE-GN1 * panel/s6e63m0: More backlight levels; Fix init; Cleanups * via: Clenunps * virtio: Use fence ID for handling fences; Cleanups Signed-off-by:
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Dan Carpenter authored
There is a copy and paste bug so it didn't return the correct error code. Fixes: b2152121 ("drm: panel: add Khadas TS050 panel driver") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
Neil Armstrong <narmstrong@baylibre.com> Link: https://patchwork.freedesktop.org/patch/msgid/X9NEfmgGilaXJs2R@mwanda
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- 14 Dec, 2020 4 commits
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Daniel Vetter authored
I guess Christian didn't compile test amdkfd. Acked-by:
Alex Deucher <alexander.deucher@amd.com> Reviewed-by:
Felix Kuehling <Felix.Kuehling@amd.com> Fixes: e11bfb99 ("drm/ttm: cleanup BO size handling v3") Cc: Christian König <christian.koenig@amd.com> Cc: Huang Rui <ray.huang@amd.com> (v1) Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Felix Kuehling <Felix.Kuehling@amd.com> Cc: amd-gfx@lists.freedesktop.org Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20201214191725.3899147-1-daniel.vetter@ffwll.ch
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm updates from Dave Airlie: "Not a huge amount of big things here, AMD has support for a few new HW variants (vangogh, green sardine, dimgrey cavefish), Intel has some more DG1 enablement. We have a few big reworks of the TTM layers and interfaces, GEM and atomic internal API reworks cross tree. fbdev is marked orphaned in here as well to reflect the current reality. core: - documentation updates - deprecate DRM_FORMAT_MOD_NONE - atomic crtc enable/disable rework - GEM convert drivers to gem object functions - remove SCATTER_LIST_MAX_SEGMENT sched: - avoid infinite waits ttm: - remove AGP support - don't modify caching for swapout - ttm pinning rework - major TTM reworks - new backend allocator - multihop support vram-helper: - top down BO placement fix - TTM changes - GEM object support displayport: - DP 2.0 DPCD prep work - DP MST extended DPCD caps fbdev: - mark as orphaned amdgpu: - Initial Vangogh support - Green Sardine support - Dimgrey Cavefish support - SG display support for renoir - SMU7 improvements - gfx9+ modiifier support - CI BACO fixes radeon: - expose voltage via hwmon on SUMO amdkfd: - fix unique id handling i915: - more DG1 enablement - bigjoiner support - integer scaling filter support - async flip support - ICL+ DSI command mode - Improve display shutdown - Display refactoring - eLLC machine fbdev loading fix - dma scatterlist fixes - TGL hang fixes - eLLC display buffer caching on SKL+ - MOCS PTE seeting for gen9+ msm: - Shutdown hook - GPU cooling device support - DSI 7nm and 10nm phy/pll updates - sm8150/sm2850 DPU support - GEM locking re-work - LLCC system cache support aspeed: - sysfs output config support ast: - LUT fix - new display mode gma500: - remove 2d framebuffer accel panfrost: - move gpu reset to a worker exynos: - new HDMI mode support mediatek: - MT8167 support - yaml bindings - MIPI DSI phy code moved etnaviv: - new perf counter - more lockdep annotation hibmc: - i2c DDC support ingenic: - pixel clock reset fix - reserved memory support - allow both DMA channels at once - different pixel format support - 30/24/8-bit palette modes tilcdc: - don't keep vblank irq enabled vc4: - new maintainer added - DSI registration fix virtio: - blob resource support - host visible and cross-device support - uuid api support" * tag 'drm-next-2020-12-11' of git://anongit.freedesktop.org/drm/drm: (1754 commits) drm/amdgpu: Initialise drm_gem_object_funcs for imported BOs drm/amdgpu: fix size calculation with stolen vga memory drm/amdgpu: remove amdgpu_ttm_late_init and amdgpu_bo_late_init drm/amdgpu: free the pre-OS console framebuffer after the first modeset drm/amdgpu: enable runtime pm using BACO on CI dGPUs drm/amdgpu/cik: enable BACO reset on Bonaire drm/amd/pm: update smu10.h WORKLOAD_PPLIB setting for raven drm/amd/pm: remove one unsupported smu function for vangogh drm/amd/display: setup system context for APUs drm/amd/display: add S/G support for Vangogh drm/amdkfd: Fix leak in dmabuf import drm/amdgpu: use AMDGPU_NUM_VMID when possible drm/amdgpu: fix sdma instance fw version and feature version init drm/amd/pm: update driver if version for dimgrey_cavefish drm/amd/display: 3.2.115 drm/amd/display: [FW Promotion] Release 0.0.45 drm/amd/display: Revert DCN2.1 dram_clock_change_latency update drm/amd/display: Enable gpu_vm_support for dcn3.01 drm/amd/display: Fixed the audio noise during mode switching with HDCP mode on drm/amd/display: Add wm table for Renoir ...
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Christian König authored
Based on an idea from Dave, but cleaned up a bit. We had multiple fields for essentially the same thing. Now bo->base.size is the original size of the BO in arbitrary units, usually bytes. bo->mem.num_pages is the size in number of pages in the resource domain of bo->mem.mem_type. v2: use the GEM object size instead of the BO size v3: fix printks in some places Signed-off-by:
Christian König <christian.koenig@amd.com> Reviewed-by: Huang Rui <ray.huang@amd.com> (v1) Acked-by:
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Tian Tao authored
it's not necessary to assign a value of 0 to ret here, because if the previous functions were executed correctly, ret would be 0. Signed-off-by:
Simon Ser <contact@emersion.fr> Link: https://patchwork.freedesktop.org/patch/msgid/1607653037-37785-1-git-send-email-tiantao6@hisilicon.com
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- 13 Dec, 2020 3 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of x86 and membarrier fixes: - Correct a few problems in the x86 and the generic membarrier implementation. Small corrections for assumptions about visibility which have turned out not to be true. - Make the PAT bits for memory encryption correct vs 4K and 2M/1G page table entries as they are at a different location. - Fix a concurrency issue in the the local bandwidth readout of resource control leading to incorrect values - Fix the ordering of allocating a vector for an interrupt. The order missed to respect the provided cpumask when the first attempt of allocating node local in the mask fails. It then tries the node instead of trying the full provided mask first. This leads to erroneous error messages and breaking the (user) supplied affinity request. Reorder it. - Make the INT3 padding detection in optprobe work correctly" * tag 'x86-urgent-2020-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/kprobes: Fix optprobe to detect INT3 padding correctly x86/apic/vector: Fix ordering in vector assignment x86/resctrl: Fix incorrect local bandwidth when mba_sc is enabled x86/mm/mem_encrypt: Fix definition of PMD_FLAGS_DEC_WP membarrier: Execute SYNC_CORE on the calling thread membarrier: Explicitly sync remote cores when SYNC_CORE is requested membarrier: Add an actual barrier before rseq_preempt() x86/membarrier: Get rid of a dubious optimization -
git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: "This should be it for 5.10. Mike and Song looked into the warning case, and thankfully it appears the fix was pretty trivial - we can just change the md device chunk type to unsigned int to get rid of it. They cannot currently be < 0, and nobody is checking for that either. We're reverting the discard changes as the corruption reports came in very late, and there's just no time to attempt to deal with it at this point. Reverting the changes in question is the right call for 5.10" * tag 'block-5.10-2020-12-12' of git://git.kernel.dk/linux-block: md: change mddev 'chunk_sectors' from int to unsigned Revert "md: add md_submit_discard_bio() for submitting discard bio" Revert "md/raid10: extend r10bio devs to raid disks" Revert "md/raid10: pull codes that wait for blocked dev into one function" Revert "md/raid10: improve raid10 discard request" Revert "md/raid10: improve discard request for far layout" Revert "dm raid: remove unnecessary discard limits for raid10"
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