The following ioctl sequence causes fimc_dma_run() to start processing without complete scaler and DMA initialization which causes missing interrupt and blocking on DQBUF: S_FMT, STREAMON, QBUF, DQBUF, STREAMOFF, STREAMON, QBUF, DQBUF. Fix this regression caused by moving pm_runtime* calls to start/stop_streaming callback by making sure the fimc_m2m_resume() is always invoked when expected. Reported-by: Tomasz Stanislawski <t.stanislaws@xxxxxxxxxxx> Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx> Signed-off-by: Kyungmin Park <s.nawrocki@xxxxxxxxxxx> --- drivers/media/video/s5p-fimc/fimc-core.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/media/video/s5p-fimc/fimc-core.c b/drivers/media/video/s5p-fimc/fimc-core.c index 07c6254..567e9ea 100644 --- a/drivers/media/video/s5p-fimc/fimc-core.c +++ b/drivers/media/video/s5p-fimc/fimc-core.c @@ -1709,9 +1709,8 @@ static int fimc_runtime_resume(struct device *dev) /* Resume the capture or mem-to-mem device */ if (fimc_capture_busy(fimc)) return fimc_capture_resume(fimc); - else if (fimc_m2m_pending(fimc)) - return fimc_m2m_resume(fimc); - return 0; + + return fimc_m2m_resume(fimc); } static int fimc_runtime_suspend(struct device *dev) -- 1.7.7.2 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
