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gpiolib: cdev: gpio_desc_to_lineinfo() should set info offset 

Set the value of the line info offset in gpio_desc_to_lineinfo(), rather
than relying on it being passed in the info.  This makes the function
behave as you would expect from the name - it generates the line info
corresponding to a given GPIO desc.

Signed-off-by: Kent Gibson <warthog618@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Kent Gibson 2020-09-28 08:27:48 +08:00 committed by Bartosz Golaszewski
parent 42e9acc679
commit 0dc11e3ad3
1 changed files with 2 additions and 1 deletions
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3
drivers/gpio/gpiolib-cdev.c
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@ -752,6 +752,8 @@ static void gpio_desc_to_lineinfo(struct gpio_desc *desc,
bool ok_for_pinctrl;
unsigned long flags;
info->line_offset = gpio_chip_hwgpio(desc);
/*
* This function takes a mutex so we must check this before taking
* the spinlock.
@ -933,7 +935,6 @@ static int lineinfo_changed_notify(struct notifier_block *nb,
return NOTIFY_DONE;
memset(&chg, 0, sizeof(chg));
chg.info.line_offset = gpio_chip_hwgpio(desc);
chg.event_type = action;
chg.timestamp = ktime_get_ns();
gpio_desc_to_lineinfo(desc, &chg.info);