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gpio: fix uninit-value in swnode_find_gpio

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Fix an issue detected by the Smatch tool:

drivers/gpio/gpiolib-swnode.c:78 swnode_find_gpio() error:
uninitialized symbol 'ret'.

The issue occurs because the 'ret' variable may be used without
initialization if the for_each_gpio_property_name loop does not run.
This could lead to returning an undefined value, causing unpredictable
behavior.

Initialize 'ret' to 0 before the loop to ensure the function
returns an error code if no properties are parsed, maintaining proper
error handling.

Fixes: 9e4c6c1ad ("Merge tag 'io_uring-6.12-20241011' of git://git.kernel.dk/linux")
Signed-off-by: Suraj Sonawane <surajsonawane0215@gmail.com>
Link: https://lore.kernel.org/r/20241026090642.28633-1-surajsonawane0215@gmail.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Suraj Sonawane 2024-10-26 14:36:42 +05:30 committed by Bartosz Golaszewski
parent 8198375843
commit a14968aea6
1 changed files with 1 additions and 1 deletions
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2
drivers/gpio/gpiolib-swnode.c
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@ -64,7 +64,7 @@ struct gpio_desc *swnode_find_gpio(struct fwnode_handle *fwnode,
struct fwnode_reference_args args; struct fwnode_reference_args args;
struct gpio_desc *desc; struct gpio_desc *desc;
char propname[32]; /* 32 is max size of property name */ char propname[32]; /* 32 is max size of property name */
int ret; int ret = 0;
swnode = to_software_node(fwnode); swnode = to_software_node(fwnode);
if (!swnode) if (!swnode)