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(parent: e097c0e) | patch
fbdev: au1200fb: Fix potential divide by zero
authorWei Chen <harperchen1110@gmail.com>
Wed, 15 Mar 2023 09:22:54 +0000 (09:22 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 5 Apr 2023 09:16:43 +0000 (11:16 +0200)
commitaa2df0785e6a98d5799da07a9d946f8f32681380
tree89d9b3e7cd41e22d2fe4b07f3bfb6380146d1c82tree | snapshot
parente097c0e66bd73e3976fa9f7555aa404e5a7616dacommit | diff
fbdev: au1200fb: Fix potential divide by zero

[ Upstream commit 44a3b36b42acfc433aaaf526191dd12fbb919fdb ]

var->pixclock can be assigned to zero by user. Without
proper check, divide by zero would occur when invoking
macro PICOS2KHZ in au1200fb_fb_check_var.

Error out if var->pixclock is zero.

Signed-off-by: Wei Chen <harperchen1110@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/video/fbdev/au1200fb.c diff | blob | history
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