luck/tmp_suning_uos_patched
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[PATCH] backlight last round of fixes

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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>
This commit is contained in:
Benjamin Herrenschmidt 2006-08-31 21:27:54 -07:00 committed by Linus Torvalds
parent 4cfb04a9d3
commit a930363881
6 changed files with 44 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/macintosh/via-pmu-backlight.c
View File

@ -167,11 +167,11 @@ void __init pmu_backlight_init()
pmu_backlight_data.max_brightness / 15);
}
up(&bd->sem);
down(&bd->sem);
bd->props->brightness = level;
bd->props->power = FB_BLANK_UNBLANK;
bd->props->update_status(bd);
down(&bd->sem);
up(&bd->sem);
mutex_lock(&pmac_backlight_mutex);
if (!pmac_backlight)

19
drivers/video/aty/aty128fb.c
View File

@ -1800,14 +1800,15 @@ static struct backlight_properties aty128_bl_data = {
static void aty128_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;
__aty128_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;
__aty128_bl_update_status(info->bl_dev);
up(&info->bl_dev->sem);
}
mutex_unlock(&info->bl_mutex);
}
@ -1842,11 +1843,11 @@ static void aty128_bl_init(struct aty128fb_par *par)
219 * FB_BACKLIGHT_MAX / MAX_LEVEL);
mutex_unlock(&info->bl_mutex);
up(&bd->sem);
down(&bd->sem);
bd->props->brightness = aty128_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);

19
drivers/video/aty/atyfb_base.c
View File

@ -2199,14 +2199,15 @@ static struct backlight_properties aty_bl_data = {
static void aty_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;
__aty_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;
__aty_bl_update_status(info->bl_dev);
up(&info->bl_dev->sem);
}
mutex_unlock(&info->bl_mutex);
}
@ -2237,11 +2238,11 @@ static void aty_bl_init(struct atyfb_par *par)
0xFF * FB_BACKLIGHT_MAX / MAX_LEVEL);
mutex_unlock(&info->bl_mutex);
up(&bd->sem);
down(&bd->sem);
bd->props->brightness = aty_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);

4
drivers/video/aty/radeon_backlight.c
View File

@ -195,11 +195,11 @@ void radeonfb_bl_init(struct radeonfb_info *rinfo)
217 * FB_BACKLIGHT_MAX / MAX_RADEON_LEVEL);
mutex_unlock(&rinfo->info->bl_mutex);
up(&bd->sem);
down(&bd->sem);
bd->props->brightness = radeon_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);

18
drivers/video/nvidia/nv_backlight.c
View File

@ -112,13 +112,15 @@ static struct backlight_properties nvidia_bl_data = {
void nvidia_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;
__nvidia_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;
__nvidia_bl_update_status(info->bl_dev);
up(&info->bl_dev->sem);
}
mutex_unlock(&info->bl_mutex);
}
@ -153,11 +155,11 @@ void nvidia_bl_init(struct nvidia_par *par)
0x534 * FB_BACKLIGHT_MAX / MAX_LEVEL);
mutex_unlock(&info->bl_mutex);
up(&bd->sem);
down(&bd->sem);
bd->props->brightness = nvidia_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);

19
drivers/video/riva/fbdev.c
View File

@ -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);