pinctrl: imx: Remove const from group_names allocation type

From: Kees Cook <[email protected]>

In preparation for making the devm_kmalloc family of allocators type aware, we need to make sure that the returned type from the allocation matches the type of the variable being assigned. (Before, the allocator would always return "void *", which can be implicitly cast to any pointer type.)

The assigned type is "const char **", but the converted allocation type would be "const char * const *", as the size was taken from "*func->groups", whose type "const char * const" is const qualified. As there is no general way to remove const qualifiers, take the size from the assignment target instead. No change in allocation size results.

Build tested ARCH=x86_64 allmodconfig with GCC 16.2.0:
drivers/pinctrl/freescale/pinctrl-imx.o

---
Cc: Dong Aisheng <[email protected]>
Cc: Fabio Estevam <[email protected]>
Cc: Frank Li <[email protected]>
Cc: Jacky Bai <[email protected]>
Cc: Pengutronix Kernel Team <[email protected]>
Cc: NXP S32 Linux Team <[email protected]>
Cc: Linus Walleij <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>
Cc: <[email protected]>

---
 drivers/pinctrl/freescale/pinctrl-imx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

index 9a45b376d36f..c11d220d982a 100644
@@ -600,7 +600,7 @@ static int imx_pinctrl_parse_functions(struct device_node *np,
 	}
 
 	group_names = devm_kcalloc(ipctl->dev, func->ngroups,
-				   sizeof(*func->groups), GFP_KERNEL);
+				   sizeof(*group_names), GFP_KERNEL);
 	if (!group_names)
 		return -ENOMEM;
 	i = 0;

2.34.1

Patch applied!

Yours,
Linus Walleij