Commit 497ba7f4 authored by Oliver Neukum's avatar Oliver Neukum Committed by David S. Miller

[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: default avatarOliver Neukum <oneukum@suse.de>
Signed-off-by: default avatarSamuel Ortiz <samuel@sortiz.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ef5d4cf2
......@@ -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,
......
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