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serial: sh-sci: Return IRQ_HANDLED when overrun if detected 

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Yoshihiro Shimoda 2015-08-21 20:02:36 +02:00 committed by Greg Kroah-Hartman
parent e0a12a27e8
commit 908030727b
1 changed files with 3 additions and 1 deletions
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4
drivers/tty/serial/sh-sci.c
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@ -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;
}