[PATCH] usb: typec: intel_pmc_mux: Zero initialize num_ports in pmc_usb_probe()
From: Nathan Chancellor
Date: Wed May 06 2026 - 02:06:32 EST
Clang warns (or errors with CONFIG_WERROR=y / W=e):
drivers/usb/typec/mux/intel_pmc_mux.c:740:3: error: variable 'num_ports' is uninitialized when used here [-Werror,-Wuninitialized]
740 | num_ports++;
| ^~~~~~~~~
This should have been initialized to zero. Do so now to clean up the
warning and ensure num_ports does not use uninitialized memory.
Fixes: 8bdb0b3830ea ("usb: typec: intel_pmc_mux: combine kzalloc + kcalloc")
Reported-by: kernelci.org bot <bot@xxxxxxxxxxxx>
Closes: https://lore.kernel.org/177793914437.2560.9287713196857718000@997d03828cfd/
Signed-off-by: Nathan Chancellor <nathan@xxxxxxxxxx>
---
drivers/usb/typec/mux/intel_pmc_mux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c
index e22b070a140f..219a32da1348 100644
--- a/drivers/usb/typec/mux/intel_pmc_mux.c
+++ b/drivers/usb/typec/mux/intel_pmc_mux.c
@@ -732,7 +732,7 @@ static int pmc_usb_probe(struct platform_device *pdev)
{
struct fwnode_handle *fwnode = NULL;
struct pmc_usb *pmc;
- u8 num_ports;
+ u8 num_ports = 0;
int i = 0;
int ret;
---
base-commit: 25bd55f46032656012eecdc6eabd62f2685a2ccc
change-id: 20260506-typec-intel_pmc_mux-fix-uninit-num_ports-3567859e7deb
Best regards,
--
Cheers,
Nathan