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SubjectRe: [PATCH] gpio: arizona: put pm_runtime in case of failure
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I recommend to replace the word “pm_runtime” by the
alternative “PM run time system” in the patch subject.


> Calling pm_runtime_get_sync increments the counter even in case of
> failure, causing incorrect ref count if pm_runtime_put is not called in
> error handling paths.

Should the term “reference count” be used here?


> Call pm_runtime_put if pm_runtime_get_sync fails.

The diff hunks show an other function name.



> +++ b/drivers/gpio/gpio-arizona.c
> @@ -64,6 +64,7 @@ static int arizona_gpio_get(struct gpio_chip *chip, unsigned offset)
> ret = pm_runtime_get_sync(chip->parent);
> if (ret < 0) {
> dev_err(chip->parent, "Failed to resume: %d\n", ret);
> + pm_runtime_put_autosuspend(chip->parent);
> return ret;
> }

You propose to use identical statements in three if branches.
Please add a corresponding jump target for better exception handling.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/coding-style.rst?id=435faf5c218a47fd6258187f62d9bb1009717896#n455


Would you like to add the tag “Fixes” to the commit message?


I find it amazing how many questionable implementation details
you pointed out recently.
Were these contributions triggered by an evolving source code analysis
tool like CheQ?
https://github.com/umnsec/cheq/

Regards,
Markus

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