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(parent: db0473f) | patch
drm/amd/display: fix pow() crashing when given base 0
authorKrunoslav Kovac <Krunoslav.Kovac@amd.com>
Thu, 6 Aug 2020 21:54:47 +0000 (17:54 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 18 Aug 2020 22:01:21 +0000 (18:01 -0400)
commitd2e59d0ff4c44d1f6f8ed884a5bea7d1bb7fd98c
tree848e6e3b5e1c708c555ad9aca80db30034f760dbtree | snapshot
parentdb0473f62438e075b6832fd1490fd06d03c59372commit | diff
drm/amd/display: fix pow() crashing when given base 0

[Why&How]
pow(a,x) is implemented as exp(x*log(a)). log(0) will crash.
So return 0^x = 0, unless x=0, convention seems to be 0^0 = 1.

Cc: stable@vger.kernel.org
Signed-off-by: Krunoslav Kovac <Krunoslav.Kovac@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/display/include/fixed31_32.h diff | blob | history
Domain: System / Kernel;