[PATCH] nvmem: core: fix return value

Russell King (Oracle)
2023-01-10T16:50:01Z

Dan Carpenter points out that the return code was not set in commit
60c8b4aebd8e ("nvmem: core: fix cleanup after dev_set_name()"), but
this is not the only issue - we also need to zero wp_gpio to prevent
gpiod_put() being called on an error value.

Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <error27@gmail.com>
Fixes: 60c8b4aebd8e ("nvmem: core: fix cleanup after dev_set_name()")
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
drivers/nvmem/core.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 082cda7ac199..1ee2e9255f7b 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -781,8 +781,11 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
if (!config->ignore_wp)
nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp",
GPIOD_OUT_HIGH);
- if (IS_ERR(nvmem->wp_gpio))
+ if (IS_ERR(nvmem->wp_gpio)) {
+ rval = PTR_ERR(nvmem->wp_gpio);
+ nvmem->wp_gpio = NULL;
goto err_put_device;
+ }

kref_init(&nvmem->refcnt);
INIT_LIST_HEAD(&nvmem->cells);
--
2.30.2