[PATCH 08/12] ipack/devices/ipoctal: ack IRQ before processing it

[Samuel Iglesias Gonsalvez]

Due to the IRQ processing, we can generate another IRQ that can come before we
end the previous one, so we lost it. E.g. when transmitting a character.

To allow the processing in SMP machines, we ack the IRQ at the beginning of the
IRQ handler.

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@xxxxxxxxxx>
---
 drivers/ipack/devices/ipoctal.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index 45920f5..d57ac61 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -223,14 +223,14 @@ static irqreturn_t ipoctal_irq_handler(void *arg)
 	unsigned int i;
 	struct ipoctal *ipoctal = (struct ipoctal *) arg;
 
-	/* Check all channels */
-	for (i = 0; i < NR_CHANNELS; i++)
-		ipoctal_irq_channel(&ipoctal->channel[i]);
-
 	/* Clear the IPack device interrupt */
 	readw(ipoctal->int_space + ACK_INT_REQ0);
 	readw(ipoctal->int_space + ACK_INT_REQ1);
 
+	/* Check all channels */
+	for (i = 0; i < NR_CHANNELS; i++)
+		ipoctal_irq_channel(&ipoctal->channel[i]);
+
 	return IRQ_HANDLED;
 }
 
-- 
1.7.10.4

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