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[5/6] nvmem: release the write-protect pin

Message ID 20200217195435.9309-6-brgl@bgdev.pl
State New
Headers show
Series nvmem/gpio: fix resource management | expand

Commit Message

Bartosz Golaszewski Feb. 17, 2020, 7:54 p.m. UTC
From: Khouloud Touil <ktouil@baylibre.com>

Put the write-protect GPIO descriptor in nvmem_release() and in the
error path in nvmem_register().

Fixes: 2a127da461a9 ("nvmem: add support for the write-protect pin")
Reported-by: geert@linux-m68k.org
Signed-off-by: Khouloud Touil <ktouil@baylibre.com>
    - also put the gpio in error path in nvmem_register(),
    - tweak the commit message: the GPIO is not auto-released]
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
 drivers/nvmem/core.c | 2 ++
 1 file changed, 2 insertions(+)
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diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index 07af9edea9cf..096c7bae9e74 100644
--- a/drivers/nvmem/core.c
+++ b/drivers/nvmem/core.c
@@ -72,6 +72,7 @@  static void nvmem_release(struct device *dev)
 	struct nvmem_device *nvmem = to_nvmem_device(dev);
 	ida_simple_remove(&nvmem_ida, nvmem->id);
+	gpiod_put(nvmem->wp_gpio);
@@ -430,6 +431,7 @@  struct nvmem_device *nvmem_register(const struct nvmem_config *config)
+	gpiod_put(nvmem->wp_gpio);
 	ida_simple_remove(&nvmem_ida, nvmem->id);