On Wed, Dec 23, 2015 at 06:28:15PM +0530, Rameshswar Prasad Sahu wrote: > From: Rameshwar Prasad Sahu <rsahu@xxxxxxx> > > For interrupt controller that doesn't support irq_disable and hardware > with level interrupt, an extra interrupt can be pending. This patch fixes > the issue by setting IRQ_DISABLE_UNLAZY flag for the interrupt line. > > Reference: http://git.kernel.org/tip/e9849777d0e27cdd2902805be51da73e7c79578c I seem to have got this patch thrice :( > > Signed-off-by: Rameshwar Prasad Sahu <rsahu@xxxxxxx> > --- > drivers/dma/xgene-dma.c | 4 ++++ > 1 files changed, 4 insertions(+), 0 deletions(-) > > diff --git a/drivers/dma/xgene-dma.c b/drivers/dma/xgene-dma.c > index 9dfa2b0..6363e84 100644 > --- a/drivers/dma/xgene-dma.c > +++ b/drivers/dma/xgene-dma.c > @@ -29,6 +29,7 @@ > #include <linux/dmapool.h> > #include <linux/interrupt.h> > #include <linux/io.h> > +#include <linux/irq.h> > #include <linux/module.h> > #include <linux/of_device.h> > > @@ -1610,6 +1611,7 @@ static int xgene_dma_request_irqs(struct xgene_dma *pdma) > /* Register DMA channel rx irq */ > for (i = 0; i < XGENE_DMA_MAX_CHANNEL; i++) { > chan = &pdma->chan[i]; > + irq_set_status_flags(chan->rx_irq, IRQ_DISABLE_UNLAZY); Why not use irq_settings_disable_unlazy(), at least read the reference you pointed out! > ret = devm_request_irq(chan->dev, chan->rx_irq, > xgene_dma_chan_ring_isr, > 0, chan->name, chan); > @@ -1620,6 +1622,7 @@ static int xgene_dma_request_irqs(struct xgene_dma *pdma) > > for (j = 0; j < i; j++) { > chan = &pdma->chan[i]; > + irq_clear_status_flags(chan->rx_irq, IRQ_DISABLE_UNLAZY); > devm_free_irq(chan->dev, chan->rx_irq, chan); > } > > @@ -1640,6 +1643,7 @@ static void xgene_dma_free_irqs(struct xgene_dma *pdma) > > for (i = 0; i < XGENE_DMA_MAX_CHANNEL; i++) { > chan = &pdma->chan[i]; > + irq_clear_status_flags(chan->rx_irq, IRQ_DISABLE_UNLAZY); > devm_free_irq(chan->dev, chan->rx_irq, chan); > } > } > -- > 1.7.1 -- ~Vinod -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
