Messages in this thread Patch in this message | | | From | Scott Branden <> | Subject | [PATCH] dmaengine: pl330: fix the race condition in pl330 driver. | Date | Thu, 26 Mar 2015 16:55:05 -0700 |
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From: ismail <ismail@broadcom.com>
Update the thread running index before issuing the GO command to the DMAC.
Tested-by: Mohamed Ismail Abdul Packir Mohamed <ismail@broadcom.com> Reviewed-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Arun Parameswaran <aparames@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Scott Branden <sbranden@broadcom.com> Signed-off-by: Mohamed Ismail Abdul Packir Mohamed <ismail@broadcom.com> --- drivers/dma/pl330.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/pl330.c b/drivers/dma/pl330.c index 0e1f567..631642d 100644 --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -1072,11 +1072,11 @@ static bool _trigger(struct pl330_thread *thrd) /* Set to generate interrupts for SEV */ writel(readl(regs + INTEN) | (1 << thrd->ev), regs + INTEN); + thrd->req_running = idx; + /* Only manager can execute GO */ _execute_DBGINSN(thrd, insn, true); - thrd->req_running = idx; - return true; } -- 2.3.3
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