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authorLars-Peter Clausen <lars@metafoo.de>2015-11-23 11:06:43 +0100
committerVinod Koul <vinod.koul@intel.com>2015-12-05 13:43:30 +0530
commitb1d6ab1aa8cdc23b89bcd578ea8d5e3c501a13d9 (patch)
tree645ae3fcc36cdfa89b790c3440e987db7c04bae0 /include/linux/dmaengine.h
parentbc0e7345168c0f7483d2d1da86285d89136417cd (diff)
dmaengine: Add might_sleep() to dmaengine_synchronize()
Implementations of dmaengine_synchronize() are allowed to sleep, hence the function must not be called to from atomic context. Add might_sleep() to dmaengine_synchronize() to make it easier to detect non-compliant callers. Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'include/linux/dmaengine.h')
-rw-r--r--include/linux/dmaengine.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
index 4662d9aa6d5a..2f69e1d93f92 100644
--- a/include/linux/dmaengine.h
+++ b/include/linux/dmaengine.h
@@ -895,6 +895,8 @@ static inline int dmaengine_terminate_async(struct dma_chan *chan)
*/
static inline void dmaengine_synchronize(struct dma_chan *chan)
{
+ might_sleep();
+
if (chan->device->device_synchronize)
chan->device->device_synchronize(chan);
}