[PATCH] gmux: Fix backlight set function

[Grant Likely]

In commit 7e30ed6b, "gmux: Add generic write32 function", the new
gmux_write32() function didn't include the io offset when writing
registers. This means that backlight update writes never go to the right
place. This patch fixes it.

Tested on Apple Macbook 8,3

Signed-off-by: Grant Likely <grant.likely@xxxxxxxxxxxx>
Cc: Matthew Garrett <mjg@xxxxxxxxxx>
---
 drivers/platform/x86/apple-gmux.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/apple-gmux.c b/drivers/platform/x86/apple-gmux.c
index dfb1a92..ee21056 100644
--- a/drivers/platform/x86/apple-gmux.c
+++ b/drivers/platform/x86/apple-gmux.c
@@ -101,7 +101,7 @@ static void gmux_pio_write32(struct apple_gmux_data *gmux_data, int port,
 
 	for (i = 0; i < 4; i++) {
 		tmpval = (val >> (i * 8)) & 0xff;
-		outb(tmpval, port + i);
+		outb(tmpval, gmux_data->iostart + port + i);
 	}
 }
 
-- 
1.7.9.5

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