From: Linus Walleij <linus.walleij@xxxxxxxxxx> [ Upstream commit ca5be902a87ddccc88144f2dea21b5f0814391ef ] We need to handle the case when of_drm_find_bridge() returns NULL. Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Acked-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20190618115245.13915-1-linus.walleij@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/gpu/drm/mcde/mcde_drv.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c index baf63fb6850a4..a810568c76df7 100644 --- a/drivers/gpu/drm/mcde/mcde_drv.c +++ b/drivers/gpu/drm/mcde/mcde_drv.c @@ -319,7 +319,7 @@ static int mcde_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct drm_device *drm; struct mcde *mcde; - struct component_match *match; + struct component_match *match = NULL; struct resource *res; u32 pid; u32 val; @@ -485,6 +485,10 @@ static int mcde_probe(struct platform_device *pdev) } put_device(p); } + if (!match) { + dev_err(dev, "no matching components\n"); + return -ENODEV; + } if (IS_ERR(match)) { dev_err(dev, "could not create component match\n"); ret = PTR_ERR(match); -- 2.20.1
