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usb ethernet gadget, workaround network stack API glitch

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Another workaround for the glitch in the network layer, whereby one call
ignores the (otherwise kernel-wide) convention that free() calls should
not oops when passed nulls.  This code already handles that API glitch in
most other paths.

From: Erik Hovland <erik@hovland.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Erik Hovland
2007-04-23 10:50:15 -07:00
committed by Greg Kroah-Hartman
parent 83f7d958ea
commit b8d297c93a
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/gadget/ether.c
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@@ -1735,7 +1735,8 @@ enomem:
defer_kevent (dev, WORK_RX_MEMORY); defer_kevent (dev, WORK_RX_MEMORY);
if (retval) { if (retval) {
DEBUG (dev, "rx submit --> %d\n", retval); DEBUG (dev, "rx submit --> %d\n", retval);
dev_kfree_skb_any (skb); if (skb)
dev_kfree_skb_any(skb);
spin_lock(&dev->req_lock); spin_lock(&dev->req_lock);
list_add (&req->list, &dev->rx_reqs); list_add (&req->list, &dev->rx_reqs);
spin_unlock(&dev->req_lock); spin_unlock(&dev->req_lock);