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| author | Xiang Yang <xiangyang3@huawei.com> | 2023-08-12 14:27:48 +0800 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2023-12-07 11:51:42 +0900 |
| commit | 73bf1c9ae6c054c53b8e84452c5e46f86dd28246 (patch) | |
| tree | ba7facc3f4f80b97d29468fd2defaf8b98edd8e2 | |
| parent | 33924328498e903bea74727353e5012d29653aff (diff) | |
| download | linux-73bf1c9ae6c054c53b8e84452c5e46f86dd28246.tar.gz | |
drm/exynos: fix a potential error pointer dereference
Smatch reports the warning below:
drivers/gpu/drm/exynos/exynos_hdmi.c:1864 hdmi_bind()
error: 'crtc' dereferencing possible ERR_PTR()
The return value of exynos_drm_crtc_get_by_type maybe ERR_PTR(-ENODEV),
which can not be used directly. Fix this by checking the return value
before using it.
Signed-off-by: Xiang Yang <xiangyang3@huawei.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index f3aaa4ea3e6820..dd9903eab563ee 100644 --- a/drivers/gpu/drm/exynos/exynos_hdmi.c +++ b/drivers/gpu/drm/exynos/exynos_hdmi.c @@ -1861,6 +1861,8 @@ static int hdmi_bind(struct device *dev, struct device *master, void *data) return ret; crtc = exynos_drm_crtc_get_by_type(drm_dev, EXYNOS_DISPLAY_TYPE_HDMI); + if (IS_ERR(crtc)) + return PTR_ERR(crtc); crtc->pipe_clk = &hdata->phy_clk; ret = hdmi_create_connector(encoder); |