From ab08999d6029bb2c79c16be5405d63d2bedbdfea Mon Sep 17 00:00:00 2001
From: roel kluin <roel.kluin@gmail.com>
Date: Tue, 1 Sep 2009 06:24:53 +0000
Subject: [PATCH] WARNING: some request_irq() failures ignored in el2_open()
Request_irq() may fail in different ways, handle accordingly.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/3c503.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/net/3c503.c b/drivers/net/3c503.c
index 134638a9759f..81c148a59adf 100644
--- a/drivers/net/3c503.c
+++ b/drivers/net/3c503.c
@@ -383,7 +383,7 @@ out:
static int
el2_open(struct net_device *dev)
{
- int retval = -EAGAIN;
+ int retval;
if (dev->irq < 2) {
int irqlist[] = {5, 9, 3, 4, 0};
@@ -391,7 +391,8 @@ el2_open(struct net_device *dev)
outb(EGACFR_NORM, E33G_GACFR); /* Enable RAM and interrupts. */
do {
- if (request_irq (*irqp, NULL, 0, "bogus", dev) != -EBUSY) {
+ retval = request_irq(*irqp, NULL, 0, "bogus", dev);
+ if (retval >= 0) {
/* Twinkle the interrupt, and check if it's seen. */
unsigned long cookie = probe_irq_on();
outb_p(0x04 << ((*irqp == 9) ? 2 : *irqp), E33G_IDCFR);
@@ -400,11 +401,14 @@ el2_open(struct net_device *dev)
&& ((retval = request_irq(dev->irq = *irqp,
eip_interrupt, 0, dev->name, dev)) == 0))
break;
+ } else {
+ if (retval != -EBUSY)
+ return reval;
}
} while (*++irqp);
if (*irqp == 0) {
outb(EGACFR_IRQOFF, E33G_GACFR); /* disable interrupts. */
- return retval;
+ return -EAGAIN;
}
} else {
if ((retval = request_irq(dev->irq, eip_interrupt, 0, dev->name, dev))) {
--
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