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authorBartosz Golaszewski <bgolaszewski@baylibre.com>2020-03-10 16:22:49 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-03-19 09:41:02 +0300
commitf7d8d7dcd978382dd1dd36e240dcddbfa6697796 (patch)
treece7d283ef9fc4fdb1ef2083acd50b4b2a84723ec /drivers/nvmem
parent31c6ff51fdce7c507e1015bf5cefda8505a13809 (diff)
downloadlinux-f7d8d7dcd978382dd1dd36e240dcddbfa6697796.tar.xz
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: 2a127da461a9 ("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>
Diffstat (limited to 'drivers/nvmem')
-rw-r--r--drivers/nvmem/core.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 503da67dde06..2758d90d63b7 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -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);