Re: [PATCH v5 1/5] nvmem: fix memory leak in error path

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On 21/02/2020 15:48, Bartosz Golaszewski wrote:
From: Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>

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@xxxxxxxxxxxx>


Applied this and 5/5

Thanks,
srini

---
  drivers/nvmem/core.c | 8 ++++++--
  1 file 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);




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