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dmaengine: mmp_pdma: explicitly freeup irq 

dmaengine device should explicitly call devm_free_irq() when using
devm_request_irq().

The irq is still ON when devices remove is executed and irq should be
quiesced before remove is completed.

Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org>
hifive-unleashed-5.1
Vinod Koul 2016-07-04 15:15:26 +05:30
parent 486b10a255
commit a46018929b
1 changed files with 19 additions and 0 deletions
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19
drivers/dma/mmp_pdma.c
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@ -931,6 +931,25 @@ static void dma_do_tasklet(unsigned long data)
static int mmp_pdma_remove(struct platform_device *op)
{
struct mmp_pdma_device *pdev = platform_get_drvdata(op);
struct mmp_pdma_phy *phy;
int i, irq = 0, irq_num = 0;
for (i = 0; i < pdev->dma_channels; i++) {
if (platform_get_irq(op, i) > 0)
irq_num++;
}
if (irq_num != pdev->dma_channels) {
irq = platform_get_irq(op, 0);
devm_free_irq(&op->dev, irq, pdev);
} else {
for (i = 0; i < pdev->dma_channels; i++) {
phy = &pdev->phy[i];
irq = platform_get_irq(op, i);
devm_free_irq(&op->dev, irq, phy);
}
}
dma_async_device_unregister(&pdev->device);
return 0;