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nvmem: fix memory leak in error path 

We need to free the ida mapping and nvmem struct if the write-protect
GPIO lookup fails.

Fixes: 2a127da461 ("nvmem: add support for the write-protect pin")
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20200310132257.23358-7-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Bartosz Golaszewski 2020-03-10 13:22:49 +00:00 committed by Greg Kroah-Hartman
parent 31c6ff51fd
commit f7d8d7dcd9
1 changed files with 6 additions and 2 deletions
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8
drivers/nvmem/core.c
View File

@ -353,8 +353,12 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
else
nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp",
GPIOD_OUT_HIGH);
if (IS_ERR(nvmem->wp_gpio))
return ERR_CAST(nvmem->wp_gpio);
if (IS_ERR(nvmem->wp_gpio)) {
ida_simple_remove(&nvmem_ida, nvmem->id);
rval = PTR_ERR(nvmem->wp_gpio);
kfree(nvmem);
return ERR_PTR(rval);
}
kref_init(&nvmem->refcnt);
INIT_LIST_HEAD(&nvmem->cells);