diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c index 93f7b724d86c..f33c00cb801b 100644 --- a/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c +++ b/drivers/media/platform/chips-media/wave5/wave5-vpu-dec.c @@ -1655,6 +1655,7 @@ static void wave5_vpu_dec_device_run(void *priv) struct queue_status_info q_status; u32 fail_res = 0; int ret = 0; + bool cmd_issued = false; dev_dbg(inst->dev->dev, "%s: Fill the ring buffer with new bitstream data", __func__); pm_runtime_resume_and_get(inst->dev->dev); @@ -1752,6 +1753,7 @@ static void wave5_vpu_dec_device_run(void *priv) inst->retry = false; if (!inst->eos) inst->queuing_num--; + cmd_issued = true; } break; default: @@ -1769,8 +1771,16 @@ finish_job_and_return: * in power and CPU time. * If EOS is passed, device_run will not call job_finish no more, it is called * only if HW is idle status in order to reduce overhead. + * + * Deferring job_finish() is only safe when this run actually queued a + * DEC_PIC command (cmd_issued): that guarantees a completion IRQ, and + * thus a later finish_decode(), will release the shared job slot. When + * device_run() is entered with no command to issue (e.g. a job that was + * queued while draining but reached the STOP state by the time it ran), + * no IRQ follows, so finish the job here to avoid leaking the slot and + * stalling every instance sharing the VPU. */ - if (!inst->sent_eos) + if (!inst->sent_eos || !cmd_issued) v4l2_m2m_job_finish(inst->v4l2_m2m_dev, m2m_ctx); } |