gpio: change member .dev to .parent
The name .dev in a struct is normally reserved for a struct device
that is let us say a superclass to the thing described by the struct.
struct gpio_chip stands out by confusingly using a struct device *dev
to point to the parent device (such as a platform_device) that
represents the hardware. As we want to give gpio_chip:s real devices,
this is not working. We need to rename this member to parent.
This was done by two coccinelle scripts, I guess it is possible to
combine them into one, but I don't know such stuff. They look like
this:
@@
struct gpio_chip *var;
@@
-var->dev
+var->parent
and:
@@
struct gpio_chip var;
@@
-var.dev
+var.parent
and:
@@
struct bgpio_chip *var;
@@
-var->gc.dev
+var->gc.parent
Plus a few instances of bgpio that I couldn't figure out how
to teach Coccinelle to rewrite.
This patch hits all over the place, but I *strongly* prefer this
solution to any piecemal approaches that just exercise patch
mechanics all over the place. It mainly hits drivers/gpio and
drivers/pinctrl which is my own backyard anyway.
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: Alek Du <alek.du@intel.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Acked-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/drivers/gpio/gpio-twl6040.c b/drivers/gpio/gpio-twl6040.c
index c946e7e..2da7c5f 100644
--- a/drivers/gpio/gpio-twl6040.c
+++ b/drivers/gpio/gpio-twl6040.c
@@ -36,7 +36,7 @@
static int twl6040gpo_get(struct gpio_chip *chip, unsigned offset)
{
- struct twl6040 *twl6040 = dev_get_drvdata(chip->dev->parent);
+ struct twl6040 *twl6040 = dev_get_drvdata(chip->parent->parent);
int ret = 0;
ret = twl6040_reg_read(twl6040, TWL6040_REG_GPOCTL);
@@ -55,7 +55,7 @@
static void twl6040gpo_set(struct gpio_chip *chip, unsigned offset, int value)
{
- struct twl6040 *twl6040 = dev_get_drvdata(chip->dev->parent);
+ struct twl6040 *twl6040 = dev_get_drvdata(chip->parent->parent);
int ret;
u8 gpoctl;
@@ -95,7 +95,7 @@
else
twl6040gpo_chip.ngpio = 1; /* twl6041 have 1 GPO */
- twl6040gpo_chip.dev = &pdev->dev;
+ twl6040gpo_chip.parent = &pdev->dev;
#ifdef CONFIG_OF_GPIO
twl6040gpo_chip.of_node = twl6040_core_dev->of_node;
#endif