[v3] PCI: rcar-ep: Fix the issue of the name parameter when calling devm_request_mem_region

Commit Message

[e-mail] Jan. 7, 2025, 1:36 p.m. UTC

From: King Dix <[e-mail]>

When using devm_request_mem_region to request a resource, if the passed
variable is a stack string variable, it will lead to an oops issue when
executing the command cat /proc/iomem.

Fix this by replacing outbound_name with the name of the previously
requested resource.

Signed-off-by: King Dix <[e-mail]>
---
Changes in v3:
  - Fix the spelling issue in the comment.
Changes in v2:
  - Fix the code indentation issue.
---
 drivers/pci/controller/pcie-rcar-ep.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/drivers/pci/controller/pcie-rcar-ep.c b/drivers/pci/controller/pcie-rcar-ep.c
index 047e2cef5afc..c5e0d025bc43 100644
--- a/drivers/pci/controller/pcie-rcar-ep.c
+++ b/drivers/pci/controller/pcie-rcar-ep.c
@@ -107,7 +107,7 @@  static int rcar_pcie_parse_outbound_ranges(struct rcar_pcie_endpoint *ep,
 		}
 		if (!devm_request_mem_region(&pdev->dev, res->start,
 					     resource_size(res),
-					     outbound_name)) {
+					     res->name)) {
 			dev_err(pcie->dev, "Cannot request memory region %s.\n",
 				outbound_name);
 			return -EIO;