nvidiafb: don't use bl_mutex in nvidiafb_blank()

PATCH New Aristeu Sergio Rozanski Filho 1 participant 1 message Jul 4, 2006 Framebuffer layer

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Aristeu Sergio Rozanski Filho

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2006-07-04 01:40 UTC #0 lore raw

PATCH 1/1 nvidiafb: don't use bl_mutex in nvidiafb_blank()

nvidiafb: remove usage of bl_mutex from nvidiafb_blank()

struct fb_info bl_mutex is used to protect bl_curve[] only, not needed in nvidiafb_blank() and will cause a recursive mutex locking in nvidia_bl_get_level_brightness()

Signed-off-by Aristeu S. Rozanski F. <[email protected]>

drivers/video/nvidia/nvidia.c +0 -2

Index: ppc-2.6/drivers/video/nvidia/nvidia.c
===================================================================
@@ -934,14 +934,12 @@
 	NVWriteCrtc(par, 0x1a, vesa);
 
 #ifdef CONFIG_FB_NVIDIA_BACKLIGHT
-	mutex_lock(&info->bl_mutex);
 	if (info->bl_dev) {
 		down(&info->bl_dev->sem);
 		info->bl_dev->props->power = blank;
 		info->bl_dev->props->update_status(info->bl_dev);
 		up(&info->bl_dev->sem);
 	}
-	mutex_unlock(&info->bl_mutex);
 #endif
 
 	NVTRACE_LEAVE();

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