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authorIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
committerIngo Molnar <mingo@elte.hu>2008-12-31 08:31:57 +0100
commita9de18eb761f7c1c860964b2e5addc1a35c7e861 (patch)
tree886e75fdfd09690cd262ca69cb7f5d1d42b48602 /arch/x86/mm/ioremap.c
parentb2aaf8f74cdc84a9182f6cabf198b7763bcb9d40 (diff)
parent6a94cb73064c952255336cc57731904174b2c58f (diff)
Merge branch 'linus' into stackprotector
Conflicts: arch/x86/include/asm/pda.h kernel/fork.c
Diffstat (limited to 'arch/x86/mm/ioremap.c')
-rw-r--r--arch/x86/mm/ioremap.c29
1 files changed, 18 insertions, 11 deletions
diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
index e4c43ec71b2..bd85d42819e 100644
--- a/arch/x86/mm/ioremap.c
+++ b/arch/x86/mm/ioremap.c
@@ -220,6 +220,13 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
return (__force void __iomem *)phys_to_virt(phys_addr);
/*
+ * Check if the request spans more than any BAR in the iomem resource
+ * tree.
+ */
+ WARN_ONCE(iomem_map_sanity_check(phys_addr, size),
+ KERN_INFO "Info: mapping multiple BARs. Your kernel is fine.");
+
+ /*
* Don't allow anybody to remap normal RAM that we're using..
*/
for (pfn = phys_addr >> PAGE_SHIFT;
@@ -381,7 +388,7 @@ static void __iomem *ioremap_default(resource_size_t phys_addr,
unsigned long size)
{
unsigned long flags;
- void *ret;
+ void __iomem *ret;
int err;
/*
@@ -393,11 +400,11 @@ static void __iomem *ioremap_default(resource_size_t phys_addr,
if (err < 0)
return NULL;
- ret = (void *) __ioremap_caller(phys_addr, size, flags,
- __builtin_return_address(0));
+ ret = __ioremap_caller(phys_addr, size, flags,
+ __builtin_return_address(0));
free_memtype(phys_addr, phys_addr + size);
- return (void __iomem *)ret;
+ return ret;
}
void __iomem *ioremap_prot(resource_size_t phys_addr, unsigned long size,
@@ -616,7 +623,7 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx)
__early_set_fixmap(idx, 0, __pgprot(0));
}
-static void *prev_map[FIX_BTMAPS_SLOTS] __initdata;
+static void __iomem *prev_map[FIX_BTMAPS_SLOTS] __initdata;
static unsigned long prev_size[FIX_BTMAPS_SLOTS] __initdata;
static int __init check_early_ioremap_leak(void)
{
@@ -639,7 +646,7 @@ static int __init check_early_ioremap_leak(void)
}
late_initcall(check_early_ioremap_leak);
-static void __init *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
+static void __init __iomem *__early_ioremap(unsigned long phys_addr, unsigned long size, pgprot_t prot)
{
unsigned long offset, last_addr;
unsigned int nrpages;
@@ -707,23 +714,23 @@ static void __init *__early_ioremap(unsigned long phys_addr, unsigned long size,
if (early_ioremap_debug)
printk(KERN_CONT "%08lx + %08lx\n", offset, fix_to_virt(idx0));
- prev_map[slot] = (void *) (offset + fix_to_virt(idx0));
+ prev_map[slot] = (void __iomem *)(offset + fix_to_virt(idx0));
return prev_map[slot];
}
/* Remap an IO device */
-void __init *early_ioremap(unsigned long phys_addr, unsigned long size)
+void __init __iomem *early_ioremap(unsigned long phys_addr, unsigned long size)
{
return __early_ioremap(phys_addr, size, PAGE_KERNEL_IO);
}
/* Remap memory */
-void __init *early_memremap(unsigned long phys_addr, unsigned long size)
+void __init __iomem *early_memremap(unsigned long phys_addr, unsigned long size)
{
return __early_ioremap(phys_addr, size, PAGE_KERNEL);
}
-void __init early_iounmap(void *addr, unsigned long size)
+void __init early_iounmap(void __iomem *addr, unsigned long size)
{
unsigned long virt_addr;
unsigned long offset;
@@ -773,7 +780,7 @@ void __init early_iounmap(void *addr, unsigned long size)
--idx;
--nrpages;
}
- prev_map[slot] = 0;
+ prev_map[slot] = NULL;
}
void __this_fixmap_does_not_exist(void)