dma: shdma: add checking the DMAOR_AE in sh_dmae_err

The irq numbers of tranfer end and address error are assigned same number
on some CPU. So the sh_dmae_err() should check the AE flag in DMAOR.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/dma/shdma.c b/drivers/dma/shdma.c
index 6451b581a70b..d50da41ac328 100644
--- a/drivers/dma/shdma.c
+++ b/drivers/dma/shdma.c
@@ -865,7 +865,12 @@ static unsigned int sh_dmae_reset(struct sh_dmae_device *shdev)
 
 static irqreturn_t sh_dmae_err(int irq, void *data)
 {
-        return IRQ_RETVAL(sh_dmae_reset(data));
+        struct sh_dmae_device *shdev = data;
+
+        if (dmaor_read(shdev) & DMAOR_AE)
+                return IRQ_RETVAL(sh_dmae_reset(data));
+        else
+                return IRQ_NONE;
 }
 
 static void dmae_do_tasklet(unsigned long data)