In 8250-omap I learned it the hard way that ignoring the return code
of dmaengine_pause() might be bad because the underlying DMA driver
might not support the function at all and so not doing what one is
expecting.
This patch adds the __must_check annotation as suggested by Russell King.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
---
include/linux/dmaengine.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 8ad9a4e839f6..4eac4716bded 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -825,7 +825,7 @@ static inline int dmaengine_terminate_all(struct dma_chan *chan)
return -ENOSYS;
}
-static inline int dmaengine_pause(struct dma_chan *chan)
+static inline int __must_check dmaengine_pause(struct dma_chan *chan)
{
if (chan->device->device_pause)
return chan->device->device_pause(chan);
--
2.5.0
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