From 5c65cb93a3d066f52a109552572304675d5a52fc Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Tue, 25 Aug 2015 12:58:05 -0700 Subject: [PATCH] dmaengine: ioatdma: fix sparse "error" with prep lock The prep lock gets acquired in ioat_check_space_lock and released in ioat_tx_submit_unlock. Setting the annotations so sparse does not freak out. drivers/dma/ioat/dma.c:273:30: sparse: context imbalance in 'ioat_tx_submit_unlock' - unexpected unlock drivers/dma/ioat/dma.c:476:5: sparse: context imbalance in 'ioat_check_space_lock' - wrong count at exit Signed-off-by: Dave Jiang Signed-off-by: Vinod Koul --- drivers/dma/ioat/dma.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/dma/ioat/dma.c b/drivers/dma/ioat/dma.c index 50d0112b602a..f66b7e640610 100644 --- a/drivers/dma/ioat/dma.c +++ b/drivers/dma/ioat/dma.c @@ -262,6 +262,7 @@ static int ioat_reset_sync(struct ioatdma_chan *ioat_chan, unsigned long tmo) } static dma_cookie_t ioat_tx_submit_unlock(struct dma_async_tx_descriptor *tx) + __releases(&ioat_chan->prep_lock) { struct dma_chan *c = tx->chan; struct ioatdma_chan *ioat_chan = to_ioat_chan(c); @@ -474,6 +475,7 @@ static bool reshape_ring(struct ioatdma_chan *ioat_chan, int order) * @num_descs: allocation length */ int ioat_check_space_lock(struct ioatdma_chan *ioat_chan, int num_descs) + __acquires(&ioat_chan->prep_lock) { bool retry;