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Subject[PATCH 3/3] nvmem: increase the reference count of a gpio passed over config
Date
From: Bartosz Golaszewski <bgolaszewski@baylibre.com>

We can obtain the write-protect GPIO in nvmem_register() by requesting
it ourselves or by storing the gpio_desc passed in nvmem_config. In the
latter case we need to increase the reference count so that it gets
freed correctly.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
drivers/nvmem/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index c05c4f4a7b9e..790ec9b5552e 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -350,7 +350,7 @@ struct nvmem_device *nvmem_register(const struct nvmem_config *config)
}

if (config->wp_gpio)
- nvmem->wp_gpio = config->wp_gpio;
+ nvmem->wp_gpio = gpiod_ref(config->wp_gpio);
else
nvmem->wp_gpio = gpiod_get_optional(config->dev, "wp",
GPIOD_OUT_HIGH);
--
2.25.0
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