From c46109f56742a31f1c534e13e43b0aa707a47f87 Mon Sep 17 00:00:00 2001 From: Dom Cobley Date: Mon, 17 Apr 2023 15:21:41 +0100 Subject: [PATCH 0575/1085] vc4_drv: Avoid panic when booted with no kms If kms/fkms overlay is not present we have no matching drivers and so match is NULL. It is not safe to call component_master_add_with_match with a null match argument. So don't do that Signed-off-by: Dom Cobley --- drivers/gpu/drm/vc4/vc4_drv.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -454,6 +454,9 @@ static int vc4_platform_drm_probe(struct vc4_match_add_drivers(dev, &match, component_drivers, ARRAY_SIZE(component_drivers)); + if (!match) + return -ENODEV; + return component_master_add_with_match(dev, &vc4_drm_ops, match); }