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-rw-r--r--arch/arm64/include/asm/io.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/io.h b/arch/arm64/include/asm/io.h
index 41fd90895dfc..1ada23a6ec19 100644
--- a/arch/arm64/include/asm/io.h
+++ b/arch/arm64/include/asm/io.h
@@ -271,6 +271,10 @@ __iowrite64_copy(void __iomem *to, const void *from, size_t count)
* I/O memory mapping functions.
*/
+typedef int (*ioremap_prot_hook_t)(phys_addr_t phys_addr, size_t size,
+ pgprot_t *prot);
+int arm64_ioremap_prot_hook_register(const ioremap_prot_hook_t hook);
+
#define ioremap_prot ioremap_prot
#define _PAGE_IOREMAP PROT_DEVICE_nGnRE