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[v3,12/33] serial: sh-sci: Return IRQ_HANDLED when overrun if detected

Message ID 1440180177-6924-13-git-send-email-geert+renesas@glider.be (mailing list archive)
State Accepted
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Geert Uytterhoeven Aug. 21, 2015, 6:02 p.m. UTC 
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>

This patch fix an issue that the driver may cause "nobody cared" IRQ
when this driver detects the overrun flag only.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v3:
  - Assimilated into my series.
---
 drivers/tty/serial/sh-sci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 017b33cf5587e809..c4cb7a5a2b110753 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1078,8 +1078,10 @@  static irqreturn_t sci_mpxed_interrupt(int irq, void *ptr)
 		ret = sci_br_interrupt(irq, ptr);
 
 	/* Overrun Interrupt */
-	if (orer_status & s->overrun_mask)
+	if (orer_status & s->overrun_mask) {
 		sci_handle_fifo_overrun(port);
+		ret = IRQ_HANDLED;
+	}
 
 	return ret;
 }