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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-10-29 10:21:34 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-10-29 10:21:34 -0700 |
commit | 7314e613d5ff9f0934f7a0f74ed7973b903315d1 (patch) | |
tree | 71c58bf663e85fac4712ab86eaae78e889c41a49 /drivers/video/au1200fb.c | |
parent | f9ec2e6f7991e748e75e324ed05ca2a7ec360ebb (diff) | |
download | op-kernel-dev-7314e613d5ff9f0934f7a0f74ed7973b903315d1.zip op-kernel-dev-7314e613d5ff9f0934f7a0f74ed7973b903315d1.tar.gz |
Fix a few incorrectly checked [io_]remap_pfn_range() calls
Nico Golde reports a few straggling uses of [io_]remap_pfn_range() that
really should use the vm_iomap_memory() helper. This trivially converts
two of them to the helper, and comments about why the third one really
needs to continue to use remap_pfn_range(), and adds the missing size
check.
Reported-by: Nico Golde <nico@ngolde.de>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org.
Diffstat (limited to 'drivers/video/au1200fb.c')
-rw-r--r-- | drivers/video/au1200fb.c | 23 |
1 files changed, 1 insertions, 22 deletions
diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c index 301224e..1d02897 100644 --- a/drivers/video/au1200fb.c +++ b/drivers/video/au1200fb.c @@ -1233,34 +1233,13 @@ static int au1200fb_fb_blank(int blank_mode, struct fb_info *fbi) * method mainly to allow the use of the TLB streaming flag (CCA=6) */ static int au1200fb_fb_mmap(struct fb_info *info, struct vm_area_struct *vma) - { - unsigned int len; - unsigned long start=0, off; struct au1200fb_device *fbdev = info->par; - if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) { - return -EINVAL; - } - - start = fbdev->fb_phys & PAGE_MASK; - len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len); - - off = vma->vm_pgoff << PAGE_SHIFT; - - if ((vma->vm_end - vma->vm_start + off) > len) { - return -EINVAL; - } - - off += start; - vma->vm_pgoff = off >> PAGE_SHIFT; - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); pgprot_val(vma->vm_page_prot) |= _CACHE_MASK; /* CCA=7 */ - return io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT, - vma->vm_end - vma->vm_start, - vma->vm_page_prot); + return vm_iomap_memory(vma, fbdev->fb_phys, fbdev->fb_len); } static void set_global(u_int cmd, struct au1200_lcd_global_regs_t *pdata) |