summaryrefslogtreecommitdiffstats
path: root/drivers/dma
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/dma')
-rw-r--r--drivers/dma/dw-edma/dw-edma-core.c17
1 files changed, 10 insertions, 7 deletions
diff --git a/drivers/dma/dw-edma/dw-edma-core.c b/drivers/dma/dw-edma/dw-edma-core.c
index db401eb11322..306ab50462be 100644
--- a/drivers/dma/dw-edma/dw-edma-core.c
+++ b/drivers/dma/dw-edma/dw-edma-core.c
@@ -13,6 +13,7 @@
#include <linux/dmaengine.h>
#include <linux/err.h>
#include <linux/interrupt.h>
+#include <linux/irq.h>
#include <linux/dma/edma.h>
#include <linux/dma-mapping.h>
@@ -773,6 +774,7 @@ static int dw_edma_irq_request(struct dw_edma_chip *chip,
u32 rd_mask = 1;
int i, err = 0;
u32 ch_cnt;
+ int irq;
ch_cnt = dw->wr_ch_cnt + dw->rd_ch_cnt;
@@ -781,16 +783,16 @@ static int dw_edma_irq_request(struct dw_edma_chip *chip,
if (dw->nr_irqs == 1) {
/* Common IRQ shared among all channels */
- err = request_irq(dw->ops->irq_vector(dev, 0),
- dw_edma_interrupt_common,
+ irq = dw->ops->irq_vector(dev, 0);
+ err = request_irq(irq, dw_edma_interrupt_common,
IRQF_SHARED, dw->name, &dw->irq[0]);
if (err) {
dw->nr_irqs = 0;
return err;
}
- get_cached_msi_msg(dw->ops->irq_vector(dev, 0),
- &dw->irq[0].msi);
+ if (irq_get_msi_desc(irq))
+ get_cached_msi_msg(irq, &dw->irq[0].msi);
} else {
/* Distribute IRQs equally among all channels */
int tmp = dw->nr_irqs;
@@ -804,7 +806,8 @@ static int dw_edma_irq_request(struct dw_edma_chip *chip,
dw_edma_add_irq_mask(&rd_mask, *rd_alloc, dw->rd_ch_cnt);
for (i = 0; i < (*wr_alloc + *rd_alloc); i++) {
- err = request_irq(dw->ops->irq_vector(dev, i),
+ irq = dw->ops->irq_vector(dev, i);
+ err = request_irq(irq,
i < *wr_alloc ?
dw_edma_interrupt_write :
dw_edma_interrupt_read,
@@ -815,8 +818,8 @@ static int dw_edma_irq_request(struct dw_edma_chip *chip,
return err;
}
- get_cached_msi_msg(dw->ops->irq_vector(dev, i),
- &dw->irq[i].msi);
+ if (irq_get_msi_desc(irq))
+ get_cached_msi_msg(irq, &dw->irq[i].msi);
}
dw->nr_irqs = i;