46 lines
1.5 KiB
Diff
46 lines
1.5 KiB
Diff
Index: linux-3.1.1/drivers/video/omap/omapfb_main.c
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===================================================================
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--- linux-3.1.1.orig/drivers/video/omap/omapfb_main.c 2011-11-11 21:19:27.000000000 +0100
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+++ linux-3.1.1/drivers/video/omap/omapfb_main.c 2011-11-16 23:10:16.554325659 +0100
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@@ -419,10 +419,10 @@ static void set_fb_fix(struct fb_info *f
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fbi->screen_base = rg->vaddr;
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if (!from_init) {
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- mutex_lock(&fbi->mm_lock);
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+ preempt_disable();
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fix->smem_start = rg->paddr;
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fix->smem_len = rg->size;
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- mutex_unlock(&fbi->mm_lock);
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+ preempt_enable();
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} else {
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fix->smem_start = rg->paddr;
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fix->smem_len = rg->size;
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@@ -932,10 +932,10 @@ static int omapfb_setup_mem(struct fb_in
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* plane memory is dealloce'd, the other
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* screen parameters in var / fix are invalid.
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*/
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- mutex_lock(&fbi->mm_lock);
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+ preempt_disable();
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fbi->fix.smem_start = 0;
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fbi->fix.smem_len = 0;
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- mutex_unlock(&fbi->mm_lock);
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+ preempt_enable();
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}
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}
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}
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Index: linux-3.1.1/drivers/video/fbmem.c
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===================================================================
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--- linux-3.1.1.orig/drivers/video/fbmem.c 2011-11-11 21:19:27.000000000 +0100
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+++ linux-3.1.1/drivers/video/fbmem.c 2011-11-16 23:20:56.055698968 +0100
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@@ -1369,8 +1369,10 @@ fb_mmap(struct file *file, struct vm_are
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}
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/* frame buffer memory */
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+ preempt_disable();
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start = info->fix.smem_start;
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len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.smem_len);
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+ preempt_enable();
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if (off >= len) {
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/* memory mapped io */
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off -= len;
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