[PATCH] /dev/mem __HAVE_PHYS_MEM_ACCESS_PROT tidy-up

[Bjorn Helgaas]

Tidy up __HAVE_PHYS_MEM_ACCESS_PROT usage to make mmap_mem() easier to read.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>

Index: work4/drivers/char/mem.c
===================================================================
--- work4.orig/drivers/char/mem.c	2005-12-02 15:16:56.000000000 -0700
+++ work4/drivers/char/mem.c	2005-12-02 15:40:35.000000000 -0700
@@ -228,22 +228,25 @@
 	return written;
 }
 
+#ifndef __HAVE_PHYS_MEM_ACCESS_PROT
+static pgprot_t phys_mem_access_prot(struct file *file, unsigned long addr,
+				     unsigned long size, pgprot_t vma_prot)
+{
+#ifdef pgprot_noncached
+	if (uncached_access(file, addr))
+		return pgprot_noncached(vma_prot);
+#endif
+	return vma_prot;
+}
+#endif
+
 static int mmap_mem(struct file * file, struct vm_area_struct * vma)
 {
-#if defined(__HAVE_PHYS_MEM_ACCESS_PROT)
 	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
 
 	vma->vm_page_prot = phys_mem_access_prot(file, offset,
 						 vma->vm_end - vma->vm_start,
 						 vma->vm_page_prot);
-#elif defined(pgprot_noncached)
-	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-	int uncached;
-
-	uncached = uncached_access(file, offset);
-	if (uncached)
-		vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-#endif
 
 	/* Remap-pfn-range will mark the range VM_IO and VM_RESERVED */
 	if (remap_pfn_range(vma,
-
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