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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2006-08-31 21:27:54 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-01 11:39:10 -0700
commita930363881c225fb52824145d1ba8f1a8c447dd8 (patch)
tree1e6996560b2cdf9d3978a085bdd1b2ebb4a934a7 /drivers/video/riva
parent4cfb04a9d3d6865d932d02616b27b89d3a634026 (diff)
downloadlwn-a930363881c225fb52824145d1ba8f1a8c447dd8.tar.gz
lwn-a930363881c225fb52824145d1ba8f1a8c447dd8.zip
[PATCH] backlight last round of fixes
Fix some more problems (inverted use of semaphores in some places). He also moved my checks into within the protected section which is better. Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/video/riva')
-rw-r--r--drivers/video/riva/fbdev.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/video/riva/fbdev.c b/drivers/video/riva/fbdev.c
index 90363943bd57..8ddb47a56b07 100644
--- a/drivers/video/riva/fbdev.c
+++ b/drivers/video/riva/fbdev.c
@@ -354,14 +354,15 @@ static struct backlight_properties riva_bl_data = {
static void riva_bl_set_power(struct fb_info *info, int power)
{
- if (info->bl_dev == NULL)
- return;
-
mutex_lock(&info->bl_mutex);
- up(&info->bl_dev->sem);
- info->bl_dev->props->power = power;
- __riva_bl_update_status(info->bl_dev);
- down(&info->bl_dev->sem);
+
+ if (info->bl_dev) {
+ down(&info->bl_dev->sem);
+ info->bl_dev->props->power = power;
+ __riva_bl_update_status(info->bl_dev);
+ up(&info->bl_dev->sem);
+ }
+
mutex_unlock(&info->bl_mutex);
}
@@ -396,11 +397,11 @@ static void riva_bl_init(struct riva_par *par)
0x534 * FB_BACKLIGHT_MAX / MAX_LEVEL);
mutex_unlock(&info->bl_mutex);
- up(&bd->sem);
+ down(&bd->sem);
bd->props->brightness = riva_bl_data.max_brightness;
bd->props->power = FB_BLANK_UNBLANK;
bd->props->update_status(bd);
- down(&bd->sem);
+ up(&bd->sem);
#ifdef CONFIG_PMAC_BACKLIGHT
mutex_lock(&pmac_backlight_mutex);