From: Pramod Gurav <gpramod@codeaurora.org>
To: andy.gross@linaro.org, linux-kernel@vger.kernel.org
Cc: dmaengine@vger.kernel.org, linux-arm-msm@vger.kernel.org,
devicetree@vger.kernel.org, dan.j.williams@intel.com,
vinod.koul@intel.com, okaya@codeaurora.org,
architt@codeaurora.org, Pramod Gurav <gpramod@codeaurora.org>
Subject: [PATCH 1/2] dmaengine: qcom_bam_dma: Clear IRQ only if its set
Date: Tue, 22 Mar 2016 15:19:10 +0530 [thread overview]
Message-ID: <1458640151-15150-2-git-send-email-gpramod@codeaurora.org> (raw)
In-Reply-To: <1458640151-15150-1-git-send-email-gpramod@codeaurora.org>
Clear the BAM IRQ bit only if there is a BAM interrupt.
Signed-off-by: Pramod Gurav <gpramod@codeaurora.org>
---
drivers/dma/qcom/bam_dma.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c
index d5e0a9c..0880345 100644
--- a/drivers/dma/qcom/bam_dma.c
+++ b/drivers/dma/qcom/bam_dma.c
@@ -807,7 +807,8 @@ static irqreturn_t bam_dma_irq(int irq, void *data)
/* don't allow reorder of the various accesses to the BAM registers */
mb();
- writel_relaxed(clr_mask, bam_addr(bdev, 0, BAM_IRQ_CLR));
+ if (srcs & BAM_IRQ)
+ writel_relaxed(clr_mask, bam_addr(bdev, 0, BAM_IRQ_CLR));
return IRQ_HANDLED;
}
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next prev parent reply other threads:[~2016-03-22 9:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-22 9:49 [PATCH 0/2] Bypass BAM init if Remotely controlled Pramod Gurav
2016-03-22 9:49 ` Pramod Gurav [this message]
2016-03-22 9:49 ` [PATCH 2/2] dmaengine: qcom_bam_dma: Bypass BAM init if not managed locally Pramod Gurav
2016-03-23 15:09 ` Rob Herring
[not found] ` <1458640151-15150-1-git-send-email-gpramod-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2016-03-22 9:55 ` [PATCH 0/2] Bypass BAM init if Remotely controlled Stanimir Varbanov
[not found] ` <56F116AC.2000704-NEYub+7Iv8PQT0dZR+AlfA@public.gmane.org>
2016-03-22 10:36 ` gpramod-sgV2jX0FEOL9JmXXK+q4OQ
2016-04-05 18:19 ` Vinod Koul
2016-04-05 21:21 ` Andy Gross
2016-04-05 21:27 ` Koul, Vinod
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