[PATCH v2 0/2] media: chips-media: wave5: Handle decoder runtime resume failures

[Guangshuo Li <lgs201920130244@gmail.com>]

This series checks the return value from every
pm_runtime_resume_and_get() call in wave5-vpu-dec.c.

The first patch fixes the capture-buffer queue path introduced by
cbb9c0d50e47. The second patch fixes the start-streaming,
stop-streaming and device-run paths introduced by 2092b3833487.

On a runtime resume failure, the decoder must not continue accessing VPU
registers. Since pm_runtime_resume_and_get() does not retain a runtime PM
usage reference on failure, these paths must also avoid calling an
unmatched pm_runtime_put_autosuspend().

Each callback now handles the failure according to its interface by
returning or completing queued buffers, cleaning up the stop-streaming
path without touching hardware, or finishing the current mem2mem job.

v2:
  - Check all four pm_runtime_resume_and_get() call sites in
    wave5-vpu-dec.c, as suggested by Nicolas.
  - Split the changes into two patches according to the commits that
    introduced the affected calls.
  - Add callback-specific cleanup for runtime resume failures.

Guangshuo Li (2):
media: chips-media: wave5: Check decoder qbuf runtime resume
media: chips-media: wave5: Check decoder runtime resume errors

.../chips-media/wave5/wave5-vpu-dec.c         | 44 +++++++++++++++++--
1 file changed, 40 insertions(+), 4 deletions(-)

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2.43.0