Commit 5d08c44e47b9 ("drm/fbdev: Add memory-agnostic fbdev client")
added the newer probe function, but left a path where no probe
function was called. fb_helper->fb would then be NULL and the strcpy
would throw a NULL pointer exception.
Handle that error case.
Fixes: 5d08c44e47b9 ("drm/fbdev: Add memory-agnostic fbdev client")
Signed-off-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_fb_helper.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index d5e8994345bb..9c8868d7b9d3 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -1635,6 +1635,8 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper)
ret = dev->driver->fbdev_probe(fb_helper, &sizes);
else if (fb_helper->funcs)
ret = fb_helper->funcs->fb_probe(fb_helper, &sizes);
+ else
+ ret = -EINVAL;
if (ret < 0)
return ret;
--
2.34.1
