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USB: rndis_host: fix crash while probing a Nokia S60 mobile

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Bug fix for driver rndis_host which fixes rndis_host probing certain
Nokia S60 (Series 60) mobiles. While the rndis_host get probed by usbnet
and tries to bind the Nokia mobile the bind is going to fail. The
rndis_host module tries to release the device, in a wrong way, which
cause the oops.

Fixes Bugzilla #7201

Signed-off-by: Daniel Gollub <dgollub@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Daniel Gollub 2007-01-16 11:03:01 +01:00 committed by Greg Kroah-Hartman
parent d0ffff8fdd
commit deb31f1764
1 changed files with 14 additions and 9 deletions
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23
drivers/usb/net/rndis_host.c
View file

@ -379,6 +379,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
{
int retval;
struct net_device *net = dev->net;
struct cdc_state *info = (void *) &dev->data;
union {
void *buf;
struct rndis_msg_hdr *header;
@ -397,7 +398,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
return -ENOMEM;
retval = usbnet_generic_cdc_bind(dev, intf);
if (retval < 0)
goto done;
goto fail;
net->hard_header_len += sizeof (struct rndis_data_hdr);
@ -412,10 +413,7 @@ static int rndis_bind(struct usbnet *dev, struct usb_interface *intf)
if (unlikely(retval < 0)) {
/* it might not even be an RNDIS device!! */
dev_err(&intf->dev, "RNDIS init failed, %d\n", retval);
fail:
usb_driver_release_interface(driver_of(intf),
((struct cdc_state *)&(dev->data))->data);
goto done;
goto fail_and_release;
}
dev->hard_mtu = le32_to_cpu(u.init_c->max_transfer_size);
/* REVISIT: peripheral "alignment" request is ignored ... */
@ -431,7 +429,7 @@ fail:
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis get ethaddr, %d\n", retval);
goto fail;
goto fail_and_release;
}
tmp = le32_to_cpu(u.get_c->offset);
if (unlikely((tmp + 8) > (1024 - ETH_ALEN)
@ -439,7 +437,7 @@ fail:
dev_err(&intf->dev, "rndis ethaddr off %d len %d ?\n",
tmp, le32_to_cpu(u.get_c->len));
retval = -EDOM;
goto fail;
goto fail_and_release;
}
memcpy(net->dev_addr, tmp + (char *)&u.get_c->request_id, ETH_ALEN);
@ -455,11 +453,18 @@ fail:
retval = rndis_command(dev, u.header);
if (unlikely(retval < 0)) {
dev_err(&intf->dev, "rndis set packet filter, %d\n", retval);
goto fail;
goto fail_and_release;
}
retval = 0;
done:
kfree(u.buf);
return retval;
fail_and_release:
usb_set_intfdata(info->data, NULL);
usb_driver_release_interface(driver_of(intf), info->data);
fail:
kfree(u.buf);
return retval;
}