To test whether a string contains a valid PCI device path formatted as
the "/<device>.<function>" address (see output from "lspci -P" as an
example; such format can also be provided as part of kernel command-line
parameters), the function called pci_dev_str_match_path() can be used.
Internally, pci_dev_str_match_path() function uses sscanf() and the "%x"
format string as part of its path matching implementation where it would
parse a given value as a unsigned hexadecimal number. This particular
format string type requires the argument to be of an unsigned int type.
Thus, to match given format string requirements and also safeguard
against a potential undefined behaviour, change type of the variables
passed to sscanf() to unsigned int accordingly.
No change to functionality intended.
Signed-off-by: Krzysztof Wilczyński <kw@xxxxxxxxx>
---
drivers/pci/pci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index ce2ab62b64cf..7998b65e9ae5 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -269,7 +269,7 @@ static int pci_dev_str_match_path(struct pci_dev *dev, const char *path,
const char **endptr)
{
int ret;
- int seg, bus, slot, func;
+ unsigned int seg, bus, slot, func;
char *wpath, *p;
char end;
--
2.33.0
