Commit 13fcfcb2 authored by 蒋家盛's avatar 蒋家盛 Committed by Dmitry Baryshkov
Browse files

drm/msm/mdp5: Add check for kzalloc 



As kzalloc may fail and return NULL pointer,
it should be better to check the return value
in order to avoid the NULL pointer dereference.

Fixes: 1cff7440 ("drm/msm: Convert to using __drm_atomic_helper_crtc_reset() for reset.")
Signed-off-by: default avatarJiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/514154/
Link: https://lore.kernel.org/r/20221206074819.18134-1-jiasheng@iscas.ac.cn


Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
parent 93340e10

drivers/gpu/drm/msm/disp/mdp5/mdp5_crtc.c

+4 −1
Original line number Diff line number Diff line
@@ -1139,7 +1139,10 @@ static void mdp5_crtc_reset(struct drm_crtc *crtc) 
	if (crtc->state)

		mdp5_crtc_destroy_state(crtc, crtc->state);



	if (mdp5_cstate)

		__drm_atomic_helper_crtc_reset(crtc, &mdp5_cstate->base);

	else

		__drm_atomic_helper_crtc_reset(crtc, NULL);

}



static const struct drm_crtc_funcs mdp5_crtc_no_lm_cursor_funcs = {