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Commit e66aadbe authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar
Browse files

x86: simplify __ioremap 



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

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 63c1dcf4

arch/x86/mm/ioremap.c

+6 −8
Original line number Diff line number Diff line
@@ -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);

}



/**