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authorAnup Patel <anup.patel@broadcom.com>2017-10-03 08:22:57 +0300
committerVinod Koul <vinod.koul@intel.com>2017-10-23 09:05:47 +0300
commit5d74aa7f641a8bf778b87941ae6a955121f64f7d (patch)
treea36b677744348c78bcb9e0808cc3af89eefe069a /drivers/dma
parent2bd6bf03f4c1c59381d62c61d03f6cc3fe71f66e (diff)
downloadlinux-5d74aa7f641a8bf778b87941ae6a955121f64f7d.tar.xz
dmaengine: bcm-sba-raid: serialize dma_cookie_complete() using reqs_lock
As-per documentation in driver/dma/dmaengine.h, the dma_cookie_complete() API should be called with lock held. This patch ensures that Broadcom SBA RAID driver calls the dma_cookie_complete() API with reqs_lock held. Signed-off-by: Anup Patel <anup.patel@broadcom.com> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/bcm-sba-raid.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/dma/bcm-sba-raid.c b/drivers/dma/bcm-sba-raid.c
index 6c2c44724637..15c558508345 100644
--- a/drivers/dma/bcm-sba-raid.c
+++ b/drivers/dma/bcm-sba-raid.c
@@ -442,7 +442,9 @@ static void sba_process_received_request(struct sba_device *sba,
WARN_ON(tx->cookie < 0);
if (tx->cookie > 0) {
+ spin_lock_irqsave(&sba->reqs_lock, flags);
dma_cookie_complete(tx);
+ spin_unlock_irqrestore(&sba->reqs_lock, flags);
dmaengine_desc_get_callback_invoke(tx, NULL);
dma_descriptor_unmap(tx);
tx->callback = NULL;