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gpiolib: Fix scope-based gpio_device refcounting

Message ID f481d5bff884c16606cbe577e707e1c1c0e6ccb2.1705330861.git.lukas@wunner.de
State Accepted
Commit 832b371097eb928d077c827b8f117bf5b99d35c0
Headers show
Series gpiolib: Fix scope-based gpio_device refcounting | expand

Commit Message

Lukas Wunner Jan. 15, 2024, 3:05 p.m. UTC
Commit 9e4555d1e54a ("gpiolib: add support for scope-based management to
gpio_device") sought to add scope-based gpio_device refcounting, but
erroneously forgot a negation of IS_ERR_OR_NULL().

As a result, gpio_device_put() is not called if the gpio_device pointer
is valid (meaning the ref is leaked), but only called if the pointer is
NULL or an ERR_PTR().

While at it drop a superfluous trailing semicolon.

Fixes: 9e4555d1e54a ("gpiolib: add support for scope-based management to gpio_device")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
---
 include/linux/gpio/driver.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/include/linux/gpio/driver.h b/include/linux/gpio/driver.h
index 0aed62f..f2878b3 100644
--- a/include/linux/gpio/driver.h
+++ b/include/linux/gpio/driver.h
@@ -614,7 +614,7 @@  struct gpio_device *gpio_device_find(void *data,
 void gpio_device_put(struct gpio_device *gdev);
 
 DEFINE_FREE(gpio_device_put, struct gpio_device *,
-	    if (IS_ERR_OR_NULL(_T)) gpio_device_put(_T));
+	    if (!IS_ERR_OR_NULL(_T)) gpio_device_put(_T))
 
 struct device *gpio_device_to_device(struct gpio_device *gdev);