drm/amd/display: prevent potential division by zero errors
commit 07e388aa upstream. There are two places in apply_below_the_range() where it's possible for a divide by zero error to occur. So, to fix this make sure the divisor is non-zero before attempting the computation in both cases. Cc: stable@vger.kernel.org Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2637 Fixes: a463b263 ("drm/amd/display: Fix frames_to_insert math") Fixes: ded6119e ("drm/amd/display: Reinstate LFC optimization") Reviewed-by:Aurabindo Pillai <aurabindo.pillai@amd.com> Signed-off-by:
Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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