From: Thierry Reding <tred...@nvidia.com>
The ->alloc() callback in struct falcon_ops returns an ERR_PTR()-encoded
error code on failure, so it needs to be properly checked for, otherwise
subsequent code may dereference an invalid pointer.
Signed-off-by: Thierry Reding <tred...@nvidia.com>
---
drivers/gpu/drm/tegra/falcon.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/tegra/falcon.c b/drivers/gpu/drm/tegra/falcon.c
index f685e72949d1..78c7a0156601 100644
--- a/drivers/gpu/drm/tegra/falcon.c
+++ b/drivers/gpu/drm/tegra/falcon.c
@@ -141,9 +141,9 @@ int falcon_load_firmware(struct falcon *falcon)
/* allocate iova space for the firmware */
falcon->firmware.vaddr = falcon->ops->alloc(falcon, firmware->size,
&falcon->firmware.paddr);
- if (!falcon->firmware.vaddr) {
- dev_err(falcon->dev, "dma memory mapping failed\n");
- return -ENOMEM;
+ if (IS_ERR(falcon->firmware.vaddr)) {
+ dev_err(falcon->dev, "DMA memory mapping failed\n");
+ return PTR_ERR(falcon->firmware.vaddr);
}
/* copy firmware image into local area. this also ensures endianness */
--
2.19.1
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