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>

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/gpio/gpio-amdpt.c b/drivers/gpio/gpio-amdpt.c
index cbbb966d4fc0..f842ccc45e64 100644
--- a/drivers/gpio/gpio-amdpt.c
+++ b/drivers/gpio/gpio-amdpt.c
@@ -39,14 +39,14 @@ static int pt_gpio_request(struct gpio_chip *gc, unsigned offset)
         unsigned long flags;
         u32 using_pins;
 
-        dev_dbg(gc->dev, "pt_gpio_request offset=%x\n", offset);
+        dev_dbg(gc->parent, "pt_gpio_request offset=%x\n", offset);
 
         spin_lock_irqsave(&pt_gpio->lock, flags);
 
         using_pins = readl(pt_gpio->reg_base + PT_SYNC_REG);
         if (using_pins & BIT(offset)) {
-                dev_warn(gc->dev, "PT GPIO pin %x reconfigured\n",
-                        offset);
+                dev_warn(gc->parent, "PT GPIO pin %x reconfigured\n",
+                         offset);
                 spin_unlock_irqrestore(&pt_gpio->lock, flags);
                 return -EINVAL;
         }
@@ -72,7 +72,7 @@ static void pt_gpio_free(struct gpio_chip *gc, unsigned offset)
 
         spin_unlock_irqrestore(&pt_gpio->lock, flags);
 
-        dev_dbg(gc->dev, "pt_gpio_free offset=%x\n", offset);
+        dev_dbg(gc->parent, "pt_gpio_free offset=%x\n", offset);
 }
 
 static void pt_gpio_set_value(struct gpio_chip *gc, unsigned offset, int value)
@@ -81,7 +81,7 @@ static void pt_gpio_set_value(struct gpio_chip *gc, unsigned offset, int value)
         unsigned long flags;
         u32 data;
 
-        dev_dbg(gc->dev, "pt_gpio_set_value offset=%x, value=%x\n",
+        dev_dbg(gc->parent, "pt_gpio_set_value offset=%x, value=%x\n",
                 offset, value);
 
         spin_lock_irqsave(&pt_gpio->lock, flags);
@@ -116,7 +116,7 @@ static int pt_gpio_get_value(struct gpio_chip *gc, unsigned offset)
         data >>= offset;
         data &= 1;
 
-        dev_dbg(gc->dev, "pt_gpio_get_value offset=%x, value=%x\n",
+        dev_dbg(gc->parent, "pt_gpio_get_value offset=%x, value=%x\n",
                 offset, data);
 
         return data;
@@ -128,7 +128,7 @@ static int pt_gpio_direction_input(struct gpio_chip *gc, unsigned offset)
         unsigned long flags;
         u32 data;
 
-        dev_dbg(gc->dev, "pt_gpio_dirction_input offset=%x\n", offset);
+        dev_dbg(gc->parent, "pt_gpio_dirction_input offset=%x\n", offset);
 
         spin_lock_irqsave(&pt_gpio->lock, flags);
 
@@ -148,7 +148,7 @@ static int pt_gpio_direction_output(struct gpio_chip *gc,
         unsigned long flags;
         u32 data;
 
-        dev_dbg(gc->dev, "pt_gpio_direction_output offset=%x, value=%x\n",
+        dev_dbg(gc->parent, "pt_gpio_direction_output offset=%x, value=%x\n",
                 offset, value);
 
         spin_lock_irqsave(&pt_gpio->lock, flags);
@@ -202,7 +202,7 @@ static int pt_gpio_probe(struct platform_device *pdev)
 
         pt_gpio->gc.label            = pdev->name;
         pt_gpio->gc.owner            = THIS_MODULE;
-        pt_gpio->gc.dev              = dev;
+        pt_gpio->gc.parent              = dev;
         pt_gpio->gc.request          = pt_gpio_request;
         pt_gpio->gc.free             = pt_gpio_free;
         pt_gpio->gc.direction_input  = pt_gpio_direction_input;