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sony-laptop: report failures on setting LCD brightness 

Check if we were successful in setting the requested brightness and
report failure in that case.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Mattia Dongili 2011-04-05 23:38:36 +09:00 committed by Matthew Garrett
parent 9fbdaeb4f4
commit 6192fa7109
1 changed files with 3 additions and 2 deletions
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5
drivers/platform/x86/sony-laptop.c
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@ -966,9 +966,10 @@ static int sony_nc_update_status_ng(struct backlight_device *bd)
int *handle = (int *)bl_get_data(bd);
value = bd->props.brightness;
sony_call_snc_handle(*handle, 0x0100 | (value << 16), &result);
if (sony_call_snc_handle(*handle, 0x0100 | (value << 16), &result))
return -EIO;
return sony_nc_get_brightness_ng(bd);
return value;
}
static const struct backlight_ops sony_backlight_ops = {