as you are already in a tasklet, it is unnecessary to call spin_lock_bh. Signed-off-by: Barry Song <21cnbao@xxxxxxxxx> --- drivers/dma/fsldma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c index 1117b51..9d360a3 100644 --- a/drivers/dma/fsldma.c +++ b/drivers/dma/fsldma.c @@ -987,7 +987,7 @@ static void dma_do_tasklet(unsigned long data) chan_dbg(chan, "tasklet entry\n"); - spin_lock_bh(&chan->desc_lock); + spin_lock(&chan->desc_lock); /* the hardware is now idle and ready for more */ chan->idle = true; @@ -995,7 +995,7 @@ static void dma_do_tasklet(unsigned long data) /* Run all cleanup for descriptors which have been completed */ fsldma_cleanup_descriptors(chan); - spin_unlock_bh(&chan->desc_lock); + spin_unlock(&chan->desc_lock); chan_dbg(chan, "tasklet exit\n"); } -- 2.7.4
