fbdev: au1200fb: Fix potential divide by zero

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[ Upstream commit 44a3b36b42 ]

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>

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Wei Chen 2023-03-15 09:22:54 +00:00 • committed by Greg Kroah-Hartman

parent 70bf48f2e9

commit 4df748486c

1 changed files with 3 additions and 0 deletions

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drivers/video/fbdev/au1200fb.c

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