drm/gma500: fix null pointer dereference in cdv_intel_lvds_get_modes

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In cdv_intel_lvds_get_modes(), the return value of drm_mode_duplicate()
is assigned to mode, which will lead to a NULL pointer dereference on
failure of drm_mode_duplicate(). Add a check to avoid npd.

Cc: stable@vger.kernel.org
Fixes: 6a227d5fd6 ("gma500: Add support for Cedarview")
Signed-off-by: Ma Ke <make24@iscas.ac.cn>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240709113311.37168-1-make24@iscas.ac.cn

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Ma Ke 2024-07-09 19:33:11 +08:00 • committed by Patrik Jakobsson

parent 2df7aac810

commit cb520c3f36

1 changed files with 3 additions and 0 deletions

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drivers/gpu/drm/gma500/cdv_intel_lvds.c

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