diff options
| author | Jeff Garzik <jgarzik@pretzel.yyz.us> | 2005-06-26 18:06:06 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-06-26 18:06:06 -0400 |
| commit | aef7b83c92dd0b7e994805440655d1d64147287b (patch) | |
| tree | 981f373358c1988e061625e8f272013065cb086f /arch/x86_64/mm/ioremap.c | |
| parent | b1fc5505e0dbcc3fd7c75bfe6bee39ec50080963 (diff) | |
| parent | 8678887e7fb43cd6c9be6c9807b05e77848e0920 (diff) | |
Merge /spare/repo/linux-2.6/
Diffstat (limited to 'arch/x86_64/mm/ioremap.c')
| -rw-r--r-- | arch/x86_64/mm/ioremap.c | 31 |
1 files changed, 9 insertions, 22 deletions
diff --git a/arch/x86_64/mm/ioremap.c b/arch/x86_64/mm/ioremap.c index 74ec8554b19..6972df480d2 100644 --- a/arch/x86_64/mm/ioremap.c +++ b/arch/x86_64/mm/ioremap.c @@ -133,7 +133,7 @@ ioremap_change_attr(unsigned long phys_addr, unsigned long size, unsigned long flags) { int err = 0; - if (flags && phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) { + if (phys_addr + size - 1 < (end_pfn_map << PAGE_SHIFT)) { unsigned long npages = (size + PAGE_SIZE - 1) >> PAGE_SHIFT; unsigned long vaddr = (unsigned long) __va(phys_addr); @@ -178,7 +178,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l if (phys_addr >= ISA_START_ADDRESS && last_addr < ISA_END_ADDRESS) return (__force void __iomem *)phys_to_virt(phys_addr); -#ifndef CONFIG_DISCONTIGMEM +#ifdef CONFIG_FLATMEM /* * Don't allow anybody to remap normal RAM that we're using.. */ @@ -214,7 +214,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l remove_vm_area((void *)(PAGE_MASK & (unsigned long) addr)); return NULL; } - if (ioremap_change_attr(phys_addr, size, flags) < 0) { + if (flags && ioremap_change_attr(phys_addr, size, flags) < 0) { area->flags &= 0xffffff; vunmap(addr); return NULL; @@ -251,7 +251,7 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size) void iounmap(volatile void __iomem *addr) { - struct vm_struct *p, **pprev; + struct vm_struct *p; if (addr <= high_memory) return; @@ -260,24 +260,11 @@ void iounmap(volatile void __iomem *addr) return; write_lock(&vmlist_lock); - for (p = vmlist, pprev = &vmlist; p != NULL; pprev = &p->next, p = *pprev) - if (p->addr == (void *)(PAGE_MASK & (unsigned long)addr)) - break; - if (!p) { - printk("__iounmap: bad address %p\n", addr); - goto out_unlock; - } - *pprev = p->next; - unmap_vm_area(p); - if ((p->flags >> 20) && - p->phys_addr + p->size - 1 < virt_to_phys(high_memory)) { - /* p->size includes the guard page, but cpa doesn't like that */ - change_page_attr(virt_to_page(__va(p->phys_addr)), - p->size >> PAGE_SHIFT, - PAGE_KERNEL); - global_flush_tlb(); - } -out_unlock: + p = __remove_vm_area((void *)((unsigned long)addr & PAGE_MASK)); + if (!p) + printk("iounmap: bad address %p\n", addr); + else if (p->flags >> 20) + ioremap_change_attr(p->phys_addr, p->size, 0); write_unlock(&vmlist_lock); kfree(p); } |