ARM: LPAE: use phys_addr_t in free_memmap()

The free_memmap() was mistakenly using unsigned long type to represent
physical addresses.  This breaks on PAE systems where memory could be placed
above the 32-bit addressible limit.

This patch fixes this function to properly use phys_addr_t instead.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Acked-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Subash Patel <subash.rp@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index 9a5cdc0..68c914e 100644 (file)
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -442,7 +442,7 @@ static inline void
 free_memmap(unsigned long start_pfn, unsigned long end_pfn)
 {
        struct page *start_pg, *end_pg;
-       unsigned long pg, pgend;
+       phys_addr_t pg, pgend;
 
        /*
         * Convert start_pfn/end_pfn to a struct page pointer.
@@ -454,8 +454,8 @@ free_memmap(unsigned long start_pfn, unsigned long end_pfn)
         * Convert to physical addresses, and
         * round start upwards and end downwards.
         */
-       pg = (unsigned long)PAGE_ALIGN(__pa(start_pg));
-       pgend = (unsigned long)__pa(end_pg) & PAGE_MASK;
+       pg = PAGE_ALIGN(__pa(start_pg));
+       pgend = __pa(end_pg) & PAGE_MASK;
 
        /*
         * If there are free pages between these,