317b3c2167
Add function helper, fb_is_primary_device(). Given struct fb_info, it will return a nonzero value if the device is the primary display. Currently, only the i386 is supported where the function checks for the IORESOURCE_ROM_SHADOW flag. Signed-off-by: Antonino Daplas <adaplas@gmail.com> Cc: David Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
23 lines
530 B
C
23 lines
530 B
C
#ifndef _ASM_FB_H_
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#define _ASM_FB_H_
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#include <linux/fb.h>
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#include <linux/fs.h>
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#include <linux/efi.h>
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#include <asm/page.h>
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static inline void fb_pgprotect(struct file *file, struct vm_area_struct *vma,
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unsigned long off)
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{
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if (efi_range_is_wc(vma->vm_start, vma->vm_end - vma->vm_start))
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vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
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else
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vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
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}
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static inline int fb_is_primary_device(struct fb_info *info)
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{
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return 0;
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}
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#endif /* _ASM_FB_H_ */
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