Commit 0400b697 authored Feb 23, 2008 by Haavard Skinnemoen Committed by Linus Torvalds Feb 23, 2008

atmel_serial: fix interrupt handler return value



We should only return IRQ_HANDLED when we actually found something to
handle. This is important since the USART interrupt handler may be
shared with the timer interrupt on some chips.

Pointed-out-by: michael <trimarchi@gandalf.sssup.it>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 98bcef56

drivers/serial/atmel_serial.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -549,7 +549,7 @@ static irqreturn_t atmel_interrupt(int irq, void *dev_id)
		atmel_handle_transmit(port, pending);
		} while (pass_counter++ < ATMEL_ISR_PASS_LIMIT);

		return IRQ_HANDLED;
		return pass_counter ? IRQ_HANDLED : IRQ_NONE;
		}

		/*