6.6-stable review patch. If anyone has any objections, please let me know.
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From: Ma Ke make24@iscas.ac.cn
commit e965e771b069421c233d674c3c8cd8c7f7245f42 upstream.
The return value of drm_atomic_get_crtc_state() needs to be checked. To avoid use of error pointer 'crtc_state' in case of the failure.
Cc: stable@vger.kernel.org Fixes: dd86dc2f9ae1 ("drm/sti: implement atomic_check for the planes") Signed-off-by: Ma Ke make24@iscas.ac.cn Acked-by: Alain Volmat alain.volmat@foss.st.com Link: https://patchwork.freedesktop.org/patch/msgid/20240909063359.1197065-1-make2... Signed-off-by: Alain Volmat alain.volmat@foss.st.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/sti/sti_gdp.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/sti/sti_gdp.c +++ b/drivers/gpu/drm/sti/sti_gdp.c @@ -638,6 +638,9 @@ static int sti_gdp_atomic_check(struct d
mixer = to_sti_mixer(crtc); crtc_state = drm_atomic_get_crtc_state(state, crtc); + if (IS_ERR(crtc_state)) + return PTR_ERR(crtc_state); + mode = &crtc_state->mode; dst_x = new_plane_state->crtc_x; dst_y = new_plane_state->crtc_y;