diff options
| author | Kevin Tang <[email protected]> | 2021-12-24 21:37:00 +0800 |
|---|---|---|
| committer | kevin3.tang <[email protected]> | 2022-02-14 21:53:17 +0800 |
| commit | 73792e6e66be1225837cc1a40f1e39b1d077751c (patch) | |
| tree | 08b40421b5e97c23012961f25fa3d9136f9de131 | |
| parent | 8668658aebb0a19d877d5a81c004baf716c4aaa6 (diff) | |
drm/sprd: check the platform_get_resource() return value
platform_get_resource() may fail and return NULL, so check it's value
before using it.
Reported-by: Zou Wei <[email protected]>
Signed-off-by: Kevin Tang <[email protected]>
Reviewed-by: Javier Martinez Canillas <[email protected]>
Acked-by: Thomas Zimmermann <[email protected]>
Link: https://lore.kernel.org/all/[email protected]
v1 -> v2:
- new patch
| -rw-r--r-- | drivers/gpu/drm/sprd/sprd_dpu.c | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/sprd/sprd_dsi.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c index 06a3414ee43a..1637203ea103 100644 --- a/drivers/gpu/drm/sprd/sprd_dpu.c +++ b/drivers/gpu/drm/sprd/sprd_dpu.c @@ -790,6 +790,11 @@ static int sprd_dpu_context_init(struct sprd_dpu *dpu, int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "failed to get I/O resource\n"); + return -EINVAL; + } + ctx->base = devm_ioremap(dev, res->start, resource_size(res)); if (!ctx->base) { dev_err(dev, "failed to map dpu registers\n"); diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c index 911b3cddc264..12b67a5d5923 100644 --- a/drivers/gpu/drm/sprd/sprd_dsi.c +++ b/drivers/gpu/drm/sprd/sprd_dsi.c @@ -907,6 +907,11 @@ static int sprd_dsi_context_init(struct sprd_dsi *dsi, struct resource *res; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(dev, "failed to get I/O resource\n"); + return -EINVAL; + } + ctx->base = devm_ioremap(dev, res->start, resource_size(res)); if (!ctx->base) { drm_err(dsi->drm, "failed to map dsi host registers\n"); |