mfd: max8925: Move _IO resources out of ioport_ioresource

commit bee6e1fa617b1fb7f6f91033428410e05f5ab0ed upstream.

The removal of mach/io.h from most ARM platforms also set the range of
valid IO ports to be empty for most platforms when previously any 32
bit integer had been valid. This makes it impossible to add IO resources
as the added range is smaller than that of the root resource for IO ports.

Since we're not really using IO memory at all fix this by defining our
own root resource outside the normal tree and make that the parent of
all IO resources. This also ensures we won't conflict with read IO ports
if we ever run on a platform which happens to use them.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Tested-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/mfd/max8925-core.c b/drivers/mfd/max8925-core.c
index ee53757beca7e8344c15a66bbe5d51bcce7b9da1..66d08a7bd3d9f02565f1c1174c66cb7d1eb32e89 100644 (file)
--- a/drivers/mfd/max8925-core.c
+++ b/drivers/mfd/max8925-core.c
@@ -18,12 +18,19 @@
 #include <linux/mfd/core.h>
 #include <linux/mfd/max8925.h>
 
+static struct resource io_parent = {
+       .start = 0,
+       .end   = 0xffffffff,
+       .flags = IORESOURCE_IO,
+};
+
 static struct resource backlight_resources[] = {
        {
                .name   = "max8925-backlight",
                .start  = MAX8925_WLED_MODE_CNTL,
                .end    = MAX8925_WLED_CNTL,
                .flags  = IORESOURCE_IO,
+               .parent = &io_parent,
        },
 };
 
@@ -42,6 +49,7 @@ static struct resource touch_resources[] = {
                .start  = MAX8925_TSC_IRQ,
                .end    = MAX8925_ADC_RES_END,
                .flags  = IORESOURCE_IO,
+               .parent = &io_parent,
        },
 };
 
@@ -60,6 +68,7 @@ static struct resource power_supply_resources[] = {
                .start  = MAX8925_CHG_IRQ1,
                .end    = MAX8925_CHG_IRQ1_MASK,
                .flags  = IORESOURCE_IO,
+               .parent = &io_parent,
        },
 };
 
@@ -118,6 +127,7 @@ static struct mfd_cell onkey_devs[] = {
        .start  = MAX8925_##_start,             \
        .end    = MAX8925_##_end,               \
        .flags  = IORESOURCE_IO,                \
+       .parent = &io_parent,                   \
 }
 
 static struct resource regulator_resources[] = {