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Groups > linux.kernel > #1362441
| From | Pramod Gurav <gpramod@codeaurora.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 1/2] dmaengine: qcom_bam_dma: Clear IRQ only if its set |
| Date | 2016-03-22 11:00 +0100 |
| Message-ID | <rfrgu-2yM-13@gated-at.bofh.it> (permalink) |
| References | <rfrgu-2yM-7@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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
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[PATCH 1/2] dmaengine: qcom_bam_dma: Clear IRQ only if its set Pramod Gurav <gpramod@codeaurora.org> - 2016-03-22 11:00 +0100
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