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| author | Oliver Neukum <oneukum@suse.de> | 2007-12-16 14:07:36 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2007-12-16 14:07:36 -0800 |
| commit | 497ba7f4c8113ed699a4fd793d1437f0c8f2da5e (patch) | |
| tree | ef639d3dc59eb8c7e18a465d6e50b80841767486 /drivers/net/irda | |
| parent | ef5d4cf2f9aae4e09883d2d664e367a16b47d857 (diff) | |
| download | linux-497ba7f4c8113ed699a4fd793d1437f0c8f2da5e.tar.gz linux-497ba7f4c8113ed699a4fd793d1437f0c8f2da5e.tar.bz2 linux-497ba7f4c8113ed699a4fd793d1437f0c8f2da5e.zip | |
[IRDA]: Race between open and disconnect in irda-usb.
It seems to me that irda_usb_net_open() must set self->netopen
under spinlock or disconnect() may fail to kill all URBs, if it is called
while an interface is opened.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/irda')
| -rw-r--r-- | drivers/net/irda/irda-usb.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/irda/irda-usb.c b/drivers/net/irda/irda-usb.c index c6355c00fd7a..9081234ab458 100644 --- a/drivers/net/irda/irda-usb.c +++ b/drivers/net/irda/irda-usb.c @@ -1168,6 +1168,7 @@ static int stir421x_patch_device(struct irda_usb_cb *self) static int irda_usb_net_open(struct net_device *netdev) { struct irda_usb_cb *self; + unsigned long flags; char hwname[16]; int i; @@ -1177,13 +1178,16 @@ static int irda_usb_net_open(struct net_device *netdev) self = (struct irda_usb_cb *) netdev->priv; IRDA_ASSERT(self != NULL, return -1;); + spin_lock_irqsave(&self->lock, flags); /* Can only open the device if it's there */ if(!self->present) { + spin_unlock_irqrestore(&self->lock, flags); IRDA_WARNING("%s(), device not present!\n", __FUNCTION__); return -1; } if(self->needspatch) { + spin_unlock_irqrestore(&self->lock, flags); IRDA_WARNING("%s(), device needs patch\n", __FUNCTION__) ; return -EIO ; } @@ -1198,6 +1202,7 @@ static int irda_usb_net_open(struct net_device *netdev) /* To do *before* submitting Rx urbs and starting net Tx queue * Jean II */ self->netopen = 1; + spin_unlock_irqrestore(&self->lock, flags); /* * Now that everything should be initialized properly, |