Messages in this thread Patch in this message | | | From | Haavard Skinnemoen <> | Subject | [PATCH] atmel_serial: Fix interrupt handler return value | Date | Thu, 21 Feb 2008 17:56:32 +0100 |
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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> --- 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 fad245b..d57bf3e 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; } /* -- 1.5.4.1
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