From 21d27ed4616c9a7f2886c4159b4c409f73f96e76 Mon Sep 17 00:00:00 2001 From: Samuel Iglesias Gonsalvez Date: Mon, 10 Dec 2012 11:50:04 +0100 Subject: [PATCH] ipack/devices/ipoctal: ack IRQ before processing it 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 Signed-off-by: Greg Kroah-Hartman --- 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 09e3a8e63e22..9cd5572457ff 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; } -- GitLab