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(parent: 21da2b4) | patch
tty: atmel_serial: fix a potential NULL pointer dereference
authorKangjie Lu <kjlu@umn.edu>
Fri, 15 Mar 2019 17:16:06 +0000 (12:16 -0500)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 3 Apr 2019 04:23:27 +0000 (06:23 +0200)
commit13f6808ec2bb43cffafd3a24b01692676bdfccfc
tree0cf9cf6dff64dac06768d77a8ee03bd2f00dd13dtree | snapshot
parent21da2b461fbda5570e17e10269bb6ca739d099e4commit | diff
tty: atmel_serial: fix a potential NULL pointer dereference

commit c85be041065c0be8bc48eda4c45e0319caf1d0e5 upstream.

In case dmaengine_prep_dma_cyclic fails, the fix returns a proper
error code to avoid NULL pointer dereference.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Fixes: 34df42f59a60 ("serial: at91: add rx dma support")
Acked-by: Richard Genoud <richard.genoud@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/serial/atmel_serial.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git