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gpiolib: Move of_node operations to gpiolib-of and correct fwnode use 

The initial value of the OF node based on presence of parent, but
at the same time this operation somehow appeared separately from others
that handle the OF case. On the other hand there is no need to assign
dev->fwnode in the OF case if code properly retrieves fwnode, i.e.
via dev_fwnode() helper.

Amend gpiolib.c and gpiolib-of.c code in order to group OF operations.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
This commit is contained in:
Andy Shevchenko 2021-03-09 11:37:33 +02:00 committed by Bartosz Golaszewski
parent 944f4b0af9
commit 1df62542e0
2 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpio/gpiolib-of.c
View File

@ -1042,11 +1042,13 @@ void of_gpiochip_remove(struct gpio_chip *chip)
void of_gpio_dev_init(struct gpio_chip *gc, struct gpio_device *gdev)
{
/* Set default OF node to parent's one if present */
if (gc->parent)
gdev->dev.of_node = gc->parent->of_node;
/* If the gpiochip has an assigned OF node this takes precedence */
if (gc->of_node)
gdev->dev.of_node = gc->of_node;
else
gc->of_node = gdev->dev.of_node;
if (gdev->dev.of_node)
gdev->dev.fwnode = of_fwnode_handle(gdev->dev.of_node);
}

9
drivers/gpio/gpiolib.c
View File

@ -586,12 +586,9 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
if (!gdev)
return -ENOMEM;
gdev->dev.bus = &gpio_bus_type;
gdev->dev.parent = gc->parent;
gdev->chip = gc;
gc->gpiodev = gdev;
if (gc->parent) {
gdev->dev.parent = gc->parent;
gdev->dev.of_node = gc->parent->of_node;
}
of_gpio_dev_init(gc, gdev);
@ -4218,11 +4215,13 @@ EXPORT_SYMBOL_GPL(gpiod_put_array);
static int gpio_bus_match(struct device *dev, struct device_driver *drv)
{
struct fwnode_handle *fwnode = dev_fwnode(dev);
/*
* Only match if the fwnode doesn't already have a proper struct device
* created for it.
*/
if (dev->fwnode && dev->fwnode->dev != dev)
if (fwnode && fwnode->dev != dev)
return 0;
return 1;
}