[PATCH v1 1/5] [media] stm32-dcmi: catch dma submission error
From: Hugues Fruchet <hidden>
Date: 2017-06-22 15:13:48
Also in:
linux-devicetree, linux-media, lkml
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
Test cookie return by dmaengine_submit() and return error if any. Signed-off-by: Hugues Fruchet <redacted> --- drivers/media/platform/stm32/stm32-dcmi.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c
index 83d32a5..0dd5d1c 100644
--- a/drivers/media/platform/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/stm32/stm32-dcmi.c@@ -295,6 +295,10 @@ static int dcmi_start_dma(struct stm32_dcmi *dcmi, /* Push current DMA transaction in the pending queue */ dcmi->dma_cookie = dmaengine_submit(desc); + if (dma_submit_error(dcmi->dma_cookie)) { + dev_err(dcmi->dev, "%s: DMA submission failed\n", __func__); + return -ENXIO; + } dma_async_issue_pending(dcmi->dma_chan);
--
1.9.1