x86: simplify __ioremap

Remove tons of castings which make the code hard to read.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index 1a88d15..2c3fa71 100644 (file)
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -114,9 +114,8 @@ static int ioremap_change_attr(unsigned long paddr, unsigned long size,
 static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
                               enum ioremap_mode mode)
 {
-       void __iomem *addr;
+       unsigned long pfn, offset, last_addr, vaddr;
        struct vm_struct *area;
-       unsigned long pfn, offset, last_addr;
        pgprot_t prot;
 
        /* Don't allow wraparound or zero size */
@@ -164,19 +163,18 @@ static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
        if (!area)
                return NULL;
        area->phys_addr = phys_addr;
-       addr = (void __iomem *) area->addr;
-       if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
-                              phys_addr, prot)) {
-               remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr));
+       vaddr = (unsigned long) area->addr;
+       if (ioremap_page_range(vaddr, vaddr + size, phys_addr, prot)) {
+               remove_vm_area((void *)(vaddr & PAGE_MASK));
                return NULL;
        }
 
        if (ioremap_change_attr(phys_addr, size, mode) < 0) {
-               vunmap(addr);
+               vunmap(area->addr);
                return NULL;
        }
 
-       return (void __iomem *) (offset + (char __iomem *)addr);
+       return (void __iomem *) (vaddr + offset);
 }
 
 /**