ch9200: use skb_cow_head() to deal with cloned skbs

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We need to ensure there is enough headroom to push extra header,
but we also need to check if we are allowed to change headers.

skb_cow_head() is the proper helper to deal with this.

Fixes: 4a476bd6d1 ("usbnet: New driver for QinHeng CH9200 devices")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: James Hughes <james.hughes@raspberrypi.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2017-04-19 09:59:25 -07:00 • committed by David S. Miller

parent d4ca735919

commit 6bc6895bdd

1 changed files with 2 additions and 7 deletions

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drivers/net/usb/ch9200.c

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