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| author | Inki Dae <inki.dae@samsung.com> | 2023-12-12 05:06:29 +0100 |
|---|---|---|
| committer | Inki Dae <inki.dae@samsung.com> | 2023-12-12 05:06:29 +0100 |
| commit | a2f8994c1001cfa48483a3afa3550016a3ab0a3e (patch) | |
| tree | cee477354e8ce7feea9c00e1f354808972939e2c /drivers/gpu/drm/exynos | |
| parent | Merge tag 'drm-misc-next-2023-12-07' of git://anongit.freedesktop.org/drm/drm... (diff) | |
| parent | drm/exynos: fix a wrong error checking (diff) | |
| download | linux-a2f8994c1001cfa48483a3afa3550016a3ab0a3e.tar.xz linux-a2f8994c1001cfa48483a3afa3550016a3ab0a3e.zip | |
Merge tag 'exynos-drm-next-for-v6.7-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into exynos-drm-next
Two fixups
- Fix a potential error pointer dereference by checking the return value
of exynos_drm_crtc_get_by_type() function before accessing to crtc
object.
- Fix a wrong error checking in exynos_drm_dma.c modules, which was reported
by Dan[1]
[1] https://lore.kernel.org/all/33e52277-1349-472b-a55b-ab5c3462bfcf@moroto.mountain/
Diffstat (limited to 'drivers/gpu/drm/exynos')
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_drm_dma.c | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/exynos/exynos_hdmi.c | 2 |
2 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/exynos/exynos_drm_dma.c b/drivers/gpu/drm/exynos/exynos_drm_dma.c index a971590b8132..e2c7373f20c6 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dma.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dma.c @@ -107,18 +107,16 @@ int exynos_drm_register_dma(struct drm_device *drm, struct device *dev, return 0; if (!priv->mapping) { - void *mapping; + void *mapping = NULL; if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU)) mapping = arm_iommu_create_mapping(&platform_bus_type, EXYNOS_DEV_ADDR_START, EXYNOS_DEV_ADDR_SIZE); else if (IS_ENABLED(CONFIG_IOMMU_DMA)) mapping = iommu_get_domain_for_dev(priv->dma_dev); - else - mapping = ERR_PTR(-ENODEV); - if (IS_ERR(mapping)) - return PTR_ERR(mapping); + if (!mapping) + return -ENODEV; priv->mapping = mapping; } diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c index f3aaa4ea3e68..dd9903eab563 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); |