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authorMichael Buesch <mb@bu3sch.de>2009-10-03 00:57:58 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-10-07 16:33:50 -0400
commit49d965c8f7fcbf06da373468e091eb7d205f0bec (patch)
treee8447d616b6eb77333f066aec3757857a471cc65 /drivers/net/wireless/b43
parent886e71de1f889adadb1065b1a83b0e64625fb716 (diff)
b43: Protect sanity check against physical device removal
Fix IRQ mask sanity check for physically pulled device. Tested-by: Andrew Price <andy@andrewprice.me.uk> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/b43')
-rw-r--r--drivers/net/wireless/b43/main.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
index 130dcd5928b..86f35827f00 100644
--- a/drivers/net/wireless/b43/main.c
+++ b/drivers/net/wireless/b43/main.c
@@ -3874,6 +3874,7 @@ static struct b43_wldev * b43_wireless_core_stop(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
struct b43_wldev *orig_dev;
+ u32 mask;
redo:
if (!dev || b43_status(dev) < B43_STAT_STARTED)
@@ -3920,7 +3921,8 @@ redo:
goto redo;
return dev;
}
- B43_WARN_ON(b43_read32(dev, B43_MMIO_GEN_IRQ_MASK));
+ mask = b43_read32(dev, B43_MMIO_GEN_IRQ_MASK);
+ B43_WARN_ON(mask != 0xFFFFFFFF && mask);
/* Drain the TX queue */
while (skb_queue_len(&wl->tx_queue))