pinctrl: make a copy of pinmux map

This makes a deep copy of the pinmux function map instead of
keeping the copy supplied from the platform around. This makes
it possible to tag the platforms map with __initdata as is also
done as part of this patch.

Rationale: a certain target platform (PXA) has numerous
pinmux maps, many of which will be lying around unused after
boot in a multi-platform binary. Instead, deep-copy the one
we're going to use and tag them all __initdata so they go away
after boot.

ChangeLog v1->v2:
- Fixup the deep copy, missed a few items on the struct,
  plus mark bool member non-const since we're making runtime
  copies if this stuff now.
ChangeLog v2->v3:
- Make a shallow copy (just copy the array of map structs)
  as Arnd noticed, string constants never get discarded by the
  kernel anyway, so these pointers may be safely copied over.

Reviewed-by: Arnd Bergmann <arnd.bergmann@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index ac0791e924bc..839fa15c4eb6 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -1605,7 +1605,7 @@ static struct platform_device pinmux_device = {
 };
 
 /* Pinmux settings */
-static struct pinmux_map u300_pinmux_map[] = {
+static struct pinmux_map __initdata u300_pinmux_map[] = {
 	/* anonymous maps for chip power and EMIFs */
 	PINMUX_MAP_PRIMARY_SYS_HOG("POWER", "power"),
 	PINMUX_MAP_PRIMARY_SYS_HOG("EMIF0", "emif0"),