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| author | Dave Jiang <dave.jiang@intel.com> | 2015-08-25 12:58:05 -0700 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2015-08-26 07:53:58 +0530 |
| commit | 5c65cb93a3d066f52a109552572304675d5a52fc (patch) | |
| tree | d6d763160a9a56ef042e1c4527db310d6889dba4 /drivers/dma/ioat/dma.c | |
| parent | 4d112426c3446d94b9bc56396075524b06913b1c (diff) | |
| download | linux-stable-5c65cb93a3d066f52a109552572304675d5a52fc.tar.gz linux-stable-5c65cb93a3d066f52a109552572304675d5a52fc.tar.bz2 linux-stable-5c65cb93a3d066f52a109552572304675d5a52fc.zip | |
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 <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma/ioat/dma.c')
| -rw-r--r-- | drivers/dma/ioat/dma.c | 2 |
1 files changed, 2 insertions, 0 deletions
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; |