isdn/gigaset: fix zero size border case in debug dump
authorTilman Schmidt <tilman@imap.cc>
Mon, 21 Jan 2013 11:57:21 +0000 (11:57 +0000)
committerDavid S. Miller <davem@davemloft.net>
Mon, 21 Jan 2013 22:36:02 +0000 (17:36 -0500)
commitd721a1752ba544df8d7d36959038b26bc92bdf80
treed119c0f503bf75925ba005c94f286f6585dafaef
parent2f62d5aa2879dc380881b2c74d042051dbb60bc8
isdn/gigaset: fix zero size border case in debug dump

If subtracting 12 from l leaves zero we'd do a zero size allocation,
leading to an oops later when we try to set the NUL terminator.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/isdn/gigaset/capi.c