[PATCH 1/3] ACPI: table upgrade: use cacheable map for tables

Aleksey Makarov
2016-05-17T12:06:01Z

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>
---
drivers/acpi/tables.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c
index a372f9e..449a649 100644
--- a/drivers/acpi/tables.c
+++ b/drivers/acpi/tables.c
@@ -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,
+ 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;
--
2.8.2