linux-stable.git/drivers/dma-buf, branch v5.13.2

dma-buf: fix unintended pin/unpin warnings

2021-05-20T12:02:27+00:00

DMA-buf internal users call the pin/unpin functions without having a
dynamic attachment. Avoid the warning and backtrace in the logs.

Signed-off-by: Christian König 
Bugs: https://gitlab.freedesktop.org/drm/intel/-/issues/3481
Fixes: c545781e1c55 ("dma-buf: doc polish for pin/unpin")
Reviewed-by: Alex Deucher 
Reviewed-by: Daniel Vetter 
CC: stable@kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20210517115705.2141-1-christian.koenig@amd.com

drm/syncobj: use newly allocated stub fences

2021-04-08T10:21:13+00:00

Allocate a new private stub fence in drm_syncobj_assign_null_handle,
instead of using a static stub fence.

When userspace creates a fence with DRM_SYNCOBJ_CREATE_SIGNALED or when
userspace signals a fence via DRM_IOCTL_SYNCOBJ_SIGNAL, the timestamp
obtained when the fence is exported and queried with SYNC_IOC_FILE_INFO
should match when the fence's status was changed from the perspective of
userspace, which is during the respective ioctl.

When a static stub fence started being used in by these ioctls, this
behavior changed. Instead, the timestamp returned by SYNC_IOC_FILE_INFO
became the first time anything used the static stub fence, which has no
meaning to userspace.

Signed-off-by: David Stevens 
Link: https://patchwork.freedesktop.org/patch/msgid/20210408095428.3983055-1-stevensd@google.com
Reviewed-by: Christian König 
Signed-off-by: Christian König

Merge tag 'drm-misc-next-2021-03-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

2021-03-16T07:08:46+00:00

drm-misc-next for 5.13:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - %p4cc printk format modifier
  - atomic: introduce drm_crtc_commit_wait, rework atomic plane state
    helpers to take the drm_commit_state structure
  - dma-buf: heaps rework to return a struct dma_buf
  - simple-kms: Add plate state helpers
  - ttm: debugfs support, removal of sysfs

Driver Changes:
  - Convert drivers to shadow plane helpers
  - arc: Move to drm/tiny
  - ast: cursor plane reworks
  - gma500: Remove TTM and medfield support
  - mxsfb: imx8mm support
  - panfrost: MMU IRQ handling rework
  - qxl: rework to better handle resources deallocation, locking
  - sun4i: Add alpha properties for UI and VI layers
  - vc4: RPi4 CEC support
  - vmwgfx: doc cleanup

Signed-off-by: Dave Airlie 

From: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20210303100600.dgnkadonzuvfnu22@gilmour

dma-buf: heaps: Fix the name used when exporting dmabufs to be the actual heap name

2021-02-25T12:58:24+00:00

By default dma_buf_export() sets the exporter name to be
KBUILD_MODNAME. Unfortunately this may not be identical to the
string used as the heap name (ie: "system" vs "system_heap").

This can cause some minor confusion with tooling, and there is
the future potential where multiple heap types may be exported
by the same module (but would all have the same name).

So to avoid all this, set the exporter exp_name to the heap name.

Cc: Daniel Vetter 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Chris Goldsworthy 
Cc: Laura Abbott 
Cc: Brian Starkey 
Cc: Hridya Valsaraju 
Cc: Suren Baghdasaryan 
Cc: Sandeep Patil 
Cc: Daniel Mentz 
Cc: Ørjan Eide 
Cc: Robin Murphy 
Cc: Ezequiel Garcia 
Cc: Simon Ser 
Cc: James Jones 
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: John Stultz 
Acked-by: Daniel Vetter 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20210209194818.2459062-2-john.stultz@linaro.org

dma-buf: dma-heap: Provide accessor to get heap name

2021-02-25T12:58:24+00:00

It can be useful to access the name for the heap,
so provide an accessor to do so.

Cc: Daniel Vetter 
Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Chris Goldsworthy 
Cc: Laura Abbott 
Cc: Brian Starkey 
Cc: Hridya Valsaraju 
Cc: Suren Baghdasaryan 
Cc: Sandeep Patil 
Cc: Daniel Mentz 
Cc: Ørjan Eide 
Cc: Robin Murphy 
Cc: Ezequiel Garcia 
Cc: Simon Ser 
Cc: James Jones 
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: John Stultz 
Acked-by: Daniel Vetter 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20210209194818.2459062-1-john.stultz@linaro.org

dma-fence: allow signaling drivers to set fence timestamp

2021-02-24T15:35:28+00:00

Some drivers have hardware capability to get the precise HW timestamp
of certain events based on which the fences are triggered. The delta
between the event HW timestamp & current HW reference timestamp can
be used to calculate the timestamp in kernel's CLOCK_MONOTONIC time
domain. This allows it to set accurate timestamp factoring out any
software and IRQ latencies. Add a timestamp variant of fence signal
function, dma_fence_signal_timestamp to allow drivers to update the
precise timestamp for fences.

Changes in v2:
- Add a new fence signal variant instead of modifying fence struct

Changes in v3:
- Add timestamp domain information to commit-text and
dma_fence_signal_timestamp documentation

Signed-off-by: Veera Sundaram Sankaran 
Reviewed-by: John Stultz 
Signed-off-by: Sumit Semwal 
 [sumits: minor parenthesis alignment]
Link: https://patchwork.freedesktop.org/patch/msgid/1610757107-11892-1-git-send-email-veeras@codeaurora.org
(cherry picked from commit 5a164ac4dbd21b82bcdc03186d40e455ff467fdc)
Signed-off-by: Sumit Semwal

dma-buf: heaps: Rework heap allocation hooks to return struct dma_buf instead of fd

2021-02-24T15:34:54+00:00

Every heap needs to create a dmabuf and then export it to a fd
via dma_buf_fd(), so to consolidate things a bit, have the heaps
just return a struct dmabuf * and let the top level
dma_heap_buffer_alloc() call handle creating the fd via
dma_buf_fd().

Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Laura Abbott 
Cc: Brian Starkey 
Cc: Hridya Valsaraju 
Cc: Suren Baghdasaryan 
Cc: Sandeep Patil 
Cc: Daniel Mentz 
Cc: Chris Goldsworthy 
Cc: Ørjan Eide 
Cc: Robin Murphy 
Cc: Ezequiel Garcia 
Cc: Simon Ser 
Cc: James Jones 
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: John Stultz 
Signed-off-by: Sumit Semwal 
 [sumits: minor reword of commit message]

Link: https://patchwork.freedesktop.org/patch/msgid/20210119204508.9256-3-john.stultz@linaro.org
(cherry picked from commit c7f59e3dd60313071a989227dcb69094f499d310)
Signed-off-by: Sumit Semwal

dma-buf: system_heap: Make sure to return an error if we abort

2021-02-24T15:34:25+00:00

If we abort from the allocation due to a fatal_signal_pending(),
be sure we report an error so any return code paths don't trip
over the fact that the allocation didn't succeed.

Cc: Sumit Semwal 
Cc: Liam Mark 
Cc: Laura Abbott 
Cc: Brian Starkey 
Cc: Hridya Valsaraju 
Cc: Suren Baghdasaryan 
Cc: Sandeep Patil 
Cc: Daniel Mentz 
Cc: Chris Goldsworthy 
Cc: Ørjan Eide 
Cc: Robin Murphy 
Cc: Ezequiel Garcia 
Cc: Simon Ser 
Cc: James Jones 
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Suggested-by: Suren Baghdasaryan 
Signed-off-by: John Stultz 
Signed-off-by: Sumit Semwal 
Link: https://patchwork.freedesktop.org/patch/msgid/20210119204508.9256-1-john.stultz@linaro.org
(cherry picked from commit 14a117252f57839bdf0123a1c888a96102e3a843)
Signed-off-by: Sumit Semwal

dma-buf: Avoid comma separated statements

2021-02-09T16:14:11+00:00

Use semicolons and braces.

Signed-off-by: Joe Perches 
Reviewed-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/990bf6f33ccaf73ad56eb4bea8bd2c0db5e90a31.1598331148.git.joe@perches.com
Signed-off-by: Christian König 
(cherry picked from commit e4abd7ad2b779c6309237a79bdcc5a128fb755ef)
Signed-off-by: Maarten Lankhorst

dma-buf: Avoid comma separated statements

2021-02-03T13:49:27+00:00

Use semicolons and braces.

Signed-off-by: Joe Perches 
Reviewed-by: Christian König 
Link: https://patchwork.freedesktop.org/patch/msgid/990bf6f33ccaf73ad56eb4bea8bd2c0db5e90a31.1598331148.git.joe@perches.com
Signed-off-by: Christian König