Since the dma_alloc_coherent() may return NULL,
the pointer returned needs to be checked to avoid
null-poineter dereference.
Fixes: 46f226c93d35 ("drm/tegra: Add NVDEC driver")
Signed-off-by: Zeng Heng <zengheng4@xxxxxxxxxx>
---
drivers/gpu/drm/tegra/nvdec.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/tegra/nvdec.c b/drivers/gpu/drm/tegra/nvdec.c
index 276fe0472730..4f667fb502d8 100644
--- a/drivers/gpu/drm/tegra/nvdec.c
+++ b/drivers/gpu/drm/tegra/nvdec.c
@@ -216,6 +216,8 @@ static int nvdec_load_firmware(struct nvdec *nvdec)
} else {
virt = tegra_drm_alloc(tegra, size, &iova);
}
+ if (IS_ERR_OR_NULL(virt))
+ return -ENOMEM;
nvdec->falcon.firmware.virt = virt;
nvdec->falcon.firmware.iova = iova;
--
2.25.1
