linux-kernel - [PATCH] nvmem: release the write-protect pin

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Message-Id: <20200217135245.29195-1-ktouil@baylibre.com>
Date:   Mon, 17 Feb 2020 14:52:45 +0100
From:   Khouloud Touil <ktouil@...libre.com>
To:     srinivas.kandagatla@...aro.org, bgolaszewski@...libre.com
Cc:     linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
        geert@...ux-m68k.org, baylibre-upstreaming@...ups.io,
        Khouloud Touil <ktouil@...libre.com>
Subject: [PATCH] nvmem: release the write-protect pin

Implement the auto-release of the write-protect pin that when the
registration fails, it's auto-released.

Fixes: 2a127da461a9 ("nvmem: add support for the write-protect pin")
Reported-by: geert@...ux-m68k.org
Signed-off-by: Khouloud Touil <ktouil@...libre.com>
---
 drivers/nvmem/core.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
index ef326f243f36..5f1988498d75 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);
 	kfree(nvmem);
 }
 
-- 
2.17.1