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| author |   Haavard Skinnemoen <hskinnemoen@atmel.com> | 2008-02-23 15:23:36 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-23 17:12:14 -0800 |
| commit | 0400b697ef20247d26427e4beb6a84ca5aa51f45 (patch) | |
| tree | 1d7461bea423da98bb8d4ac409a69126b7f8c9cb /drivers/serial/atmel_serial.c | |
| parent | copyright owner and author clean up for intel iommu and related files (diff) | |
| download | linux-dev-0400b697ef20247d26427e4beb6a84ca5aa51f45.tar.xz linux-dev-0400b697ef20247d26427e4beb6a84ca5aa51f45.zip | |
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>
Diffstat (limited to 'drivers/serial/atmel_serial.c')
| -rw-r--r-- | drivers/serial/atmel_serial.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/atmel_serial.c b/drivers/serial/atmel_serial.c index fad245b064d6..d57bf3e708d8 100644 --- a/drivers/serial/atmel_serial.c +++ b/drivers/serial/atmel_serial.c @@ -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; } /* |