USB: cdc-acm: fix potential null-pointer dereference on disconnect

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Fix potential null-pointer exception on disconnect introduced by commit
11ea859d64 (USB: additional power savings
for cdc-acm devices that support remote wakeup).

Only access acm->dev after making sure it is non-null in control urb
completion handler.

Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

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Johan Hovold 2011-03-22 11:12:11 +01:00 • committed by Greg Kroah-Hartman

parent 15e5bee33f

commit 7e7797e7f6

1 changed files with 2 additions and 1 deletions

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drivers/usb/class/cdc-acm.c

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