[radeon-alex:drm-next-4.15-dc 1065/1129] drivers/gpu/drm/amd/amdgpu/../display/dc/basics/logger.c:73:23-27: WARNING: casting value returned by memory allocation function to (char *) is useless.

[kbuild test robot]

tree:   git://people.freedesktop.org/~agd5f/linux.git drm-next-4.15-dc
head:   8ee5702afdd48b5864c46418ad310d6a23c8e9ab
commit: 2004f45ef83f07f43f5da6ede780b08068c7583d [1065/1129] drm/amd/display: Use kernel alloc/free


coccinelle warnings: (new ones prefixed by >>)

>> drivers/gpu/drm/amd/amdgpu/../display/dc/basics/logger.c:73:23-27: WARNING: casting value returned by memory allocation function to (char *) is useless.

Please review and possibly fold the followup patch.

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