malidp: Fix NULL vs IS_ERR() checking

The get_sg_table() function does not return NULL.
It returns error pointers.

Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://lore.kernel.org/dri-devel/20211213072115.18098-1-linmq006@gmail.com/

diff --git a/drivers/gpu/drm/arm/malidp_planes.c b/drivers/gpu/drm/arm/malidp_planes.c
index 81d9f5004025ea5be73c0c9d2fee54864a72a64f..338cec4a3fff75e7ba1aba38bb49bdd5ce848d2b 100644 (file)
--- a/drivers/gpu/drm/arm/malidp_planes.c
+++ b/drivers/gpu/drm/arm/malidp_planes.c
@@ -344,7 +344,7 @@ static bool malidp_check_pages_threshold(struct malidp_plane_state *ms,
                else
                        sgt = obj->funcs->get_sg_table(obj);
 
-               if (!sgt)
+               if (IS_ERR(sgt))
                        return false;
 
                sgl = sgt->sgl;