@@ -139,8 +139,7 @@ extern void __memset_io(volatile void __iomem *, int, size_t);
* I/O memory mapping functions.
*/
-bool ioremap_allowed(phys_addr_t phys_addr, size_t size, unsigned long prot);
-#define ioremap_allowed ioremap_allowed
+#define ioremap_prot ioremap_prot
#define _PAGE_IOREMAP PROT_DEVICE_nGnRE
@@ -3,20 +3,22 @@
#include <linux/mm.h>
#include <linux/io.h>
-bool ioremap_allowed(phys_addr_t phys_addr, size_t size, unsigned long prot)
+void __iomem *ioremap_prot(phys_addr_t phys_addr, size_t size,
+ unsigned long prot)
{
unsigned long last_addr = phys_addr + size - 1;
/* Don't allow outside PHYS_MASK */
if (last_addr & ~PHYS_MASK)
- return false;
+ return NULL;
/* Don't allow RAM to be mapped. */
if (WARN_ON(pfn_is_map_memory(__phys_to_pfn(phys_addr))))
- return false;
+ return NULL;
- return true;
+ return generic_ioremap_prot(phys_addr, size, __pgprot(prot));
}
+EXPORT_SYMBOL(ioremap_prot);
/*
* Must be called after early_fixmap_init
Since hook functions ioremap_allowed() and iounmap_allowed() will be obsoleted, add wrapper function ioremap_prot() to contain the the specific handling in addition to generic_ioremap_prot() invocation. Signed-off-by: Baoquan He <bhe@redhat.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: linux-arm-kernel@lists.infradead.org --- arch/arm64/include/asm/io.h | 3 +-- arch/arm64/mm/ioremap.c | 10 ++++++---- 2 files changed, 7 insertions(+), 6 deletions(-)