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authorThomas Gleixner <tglx@linutronix.de>2009-08-14 15:59:00 +0200
committerThomas Gleixner <tglx@linutronix.de>2009-08-14 15:59:30 +0200
commit4cd1993f0046fbc765dbf20af90966f5661e3789 (patch)
tree8772c03b73159524183f08337b134503ddf8479e /drivers/video/atmel_lcdfb.c
parent97fd9ed48ce2b807edc363bef3e817aeeb5cd5e6 (diff)
parent64f1607ffbbc772685733ea63e6f7f4183df1b16 (diff)
Merge branch 'linus' into timers/core
Reason: Martin's timekeeping cleanup series depends on both timers/core and mainline changes. Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/video/atmel_lcdfb.c')
-rw-r--r--drivers/video/atmel_lcdfb.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index cb88394ba99..da05f0801bb 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -261,6 +261,9 @@ static inline void atmel_lcdfb_free_video_memory(struct atmel_lcdfb_info *sinfo)
/**
* atmel_lcdfb_alloc_video_memory - Allocate framebuffer memory
* @sinfo: the frame buffer to allocate memory for
+ *
+ * This function is called only from the atmel_lcdfb_probe()
+ * so no locking by fb_info->mm_lock around smem_len setting is needed.
*/
static int atmel_lcdfb_alloc_video_memory(struct atmel_lcdfb_info *sinfo)
{
@@ -270,9 +273,7 @@ static int atmel_lcdfb_alloc_video_memory(struct atmel_lcdfb_info *sinfo)
smem_len = (var->xres_virtual * var->yres_virtual
* ((var->bits_per_pixel + 7) / 8));
- mutex_lock(&info->mm_lock);
info->fix.smem_len = max(smem_len, sinfo->smem_len);
- mutex_unlock(&info->mm_lock);
info->screen_base = dma_alloc_writecombine(info->device, info->fix.smem_len,
(dma_addr_t *)&info->fix.smem_start, GFP_KERNEL);