drm/radeon: fix a possible null pointer dereference
authorMa Ke <make_ruc2021@163.com>
Wed, 11 Oct 2023 01:21:43 +0000 (09:21 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 28 Nov 2023 17:19:41 +0000 (17:19 +0000)
commitc0fe7aacc32e482d78b5e1eb30e3b6270c47298b
tree6ec64702a4706537db1d7819817eb707171713a8
parenteaede6900c0961b072669d6bd97fe8f90ed1900f
drm/radeon: fix a possible null pointer dereference

[ Upstream commit 2c1fe3c480f9e1deefd50d4b18be4a046011ee1f ]

In radeon_tv_get_modes(), the return value of drm_cvt_mode()
is assigned to mode, which will lead to a NULL pointer
dereference on failure of drm_cvt_mode(). Add a check to
avoid null point dereference.

Signed-off-by: Ma Ke <make_ruc2021@163.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/radeon/radeon_connectors.c