fbdev: intelfb: Fix potential divide by zero

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[ Upstream commit d823685486 ]

Variable var->pixclock is controlled by user and can be assigned
to zero. Without proper check, divide by zero would occur in
intelfbhw_validate_mode and intelfbhw_mode_to_hw.

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 08:33:47 +00:00 • committed by Greg Kroah-Hartman

parent cf7857ed07

commit 3c666c7f7a

1 changed files with 3 additions and 0 deletions

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drivers/video/fbdev/intelfb/intelfbdrv.c

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