Revert "usbnet: drop unneeded check for NULL"
authorOliver Neukum <oliver@neukum.org>
Wed, 5 Sep 2012 19:22:32 +0000 (21:22 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 5 Sep 2012 20:19:58 +0000 (16:19 -0400)
commitf6fe569fe056388166575af1cfaed0bcbc688305
tree2e93441f102fdae179f2ec48a6a77a0769c96429
parentd23ff701643a4a725e2c7a8ba2d567d39daa29ea
Revert "usbnet: drop unneeded check for NULL"

This reverts commit 5d65878d7031b6c39054b282faceff406bb2fda9.
The upper layers call usbnet_start_xmit() with a valid skb.
However cdc_ncm abuses this method by calling it with NULL
to trigger IO for the aggregated private skb holding erlier
packets. Until cdc_ncm is fixed, the check for NULL must
be reintroduced.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/usb/usbnet.c