fbdev: lxfb: Fix potential divide by zero

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[ Upstream commit 61ac4b86a4 ]

var->pixclock can be assigned to zero by user. Without proper
check, divide by zero would occur in lx_set_clock.

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 09:05:18 +00:00 • committed by Greg Kroah-Hartman

parent 3c666c7f7a

commit 70bf48f2e9

1 changed files with 3 additions and 0 deletions

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drivers/video/fbdev/geode/lxfb_core.c

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