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| author | Mattia Dongili <malattia@linux.it> | 2011-04-05 23:38:36 +0900 |
|---|---|---|
| committer | Matthew Garrett <mjg@redhat.com> | 2011-05-09 10:26:44 -0400 |
| commit | 6192fa7109fb33591fa1078c8c1981e39da02d2d (patch) | |
| tree | d7fb75fcf18338d55316170f05e59f1980e5b134 | |
| parent | 9fbdaeb4f4dd14a0caa9fc35c496d5440c251a3a (diff) | |
| download | linux-6192fa7109fb33591fa1078c8c1981e39da02d2d.tar.gz linux-6192fa7109fb33591fa1078c8c1981e39da02d2d.tar.bz2 linux-6192fa7109fb33591fa1078c8c1981e39da02d2d.zip | |
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>
| -rw-r--r-- | drivers/platform/x86/sony-laptop.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c index 8f709aec4da0..9d80ae4e6be6 100644 --- a/drivers/platform/x86/sony-laptop.c +++ b/drivers/platform/x86/sony-laptop.c @@ -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 = { |