diff options
Diffstat (limited to 'arch/i386/mm/ioremap.c')
| -rw-r--r-- | arch/i386/mm/ioremap.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/i386/mm/ioremap.c b/arch/i386/mm/ioremap.c index db06f739991..6b25afc933b 100644 --- a/arch/i386/mm/ioremap.c +++ b/arch/i386/mm/ioremap.c @@ -11,6 +11,7 @@ #include <linux/vmalloc.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/module.h> #include <asm/io.h> #include <asm/fixmap.h> #include <asm/cacheflush.h> @@ -165,7 +166,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l } return (void __iomem *) (offset + (char __iomem *)addr); } - +EXPORT_SYMBOL(__ioremap); /** * ioremap_nocache - map bus memory into CPU space @@ -222,6 +223,7 @@ void __iomem *ioremap_nocache (unsigned long phys_addr, unsigned long size) return p; } +EXPORT_SYMBOL(ioremap_nocache); void iounmap(volatile void __iomem *addr) { @@ -238,21 +240,24 @@ void iounmap(volatile void __iomem *addr) addr < phys_to_virt(ISA_END_ADDRESS)) return; - p = remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr)); + write_lock(&vmlist_lock); + p = __remove_vm_area((void *) (PAGE_MASK & (unsigned long __force) addr)); if (!p) { - printk("__iounmap: bad address %p\n", addr); - return; + printk(KERN_WARNING "iounmap: bad address %p\n", addr); + goto out_unlock; } if ((p->flags >> 20) && p->phys_addr < virt_to_phys(high_memory) - 1) { - /* 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: + write_unlock(&vmlist_lock); kfree(p); } +EXPORT_SYMBOL(iounmap); void __init *bt_ioremap(unsigned long phys_addr, unsigned long size) { |