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ACPI / tables: table upgrade: use cacheable map for tables

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The new memory allocated in acpi_table_initrd_init() is used to
copy the upgraded tables to it.  So it should be mapped with
early_memunmap() instead of early_ioremap().

This is critical for ARM.

Signed-off-by: Aleksey Makarov <aleksey.makarov@linaro.org>
Acked-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Aleksey Makarov 2016-06-20 13:56:09 +03:00 committed by Rafael J. Wysocki
parent 33688abb28
commit ce0c1fcc73
1 changed files with 3 additions and 3 deletions
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6
drivers/acpi/tables.c
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@ -578,10 +578,10 @@ static void __init acpi_table_initrd_init(void *data, size_t size)
clen = size;
if (clen > MAP_CHUNK_SIZE - slop)
clen = MAP_CHUNK_SIZE - slop;
dest_p = early_ioremap(dest_addr & PAGE_MASK,
clen + slop);
dest_p = early_memremap(dest_addr & PAGE_MASK,
clen + slop);
memcpy(dest_p + slop, src_p, clen);
early_iounmap(dest_p, clen + slop);
early_memunmap(dest_p, clen + slop);
src_p += clen;
dest_addr += clen;
size -= clen;