[PATCH] staging: atomisp: ov2722: constify acpi_device_id.

[Arvind Yadav]

acpi_device_id are not supposed to change at runtime. All functions
working with acpi_device_id provided by <acpi/acpi_bus.h> work with
const acpi_device_id. So mark the non-const structs as const.

File size before:
   text    data     bss     dec     hex filename
  14771    1880       0   16651    410b 
drivers/staging/media/atomisp/i2c/ov2722.o

File size After adding 'const':
   text    data     bss     dec     hex filename
  14835    1816       0   16651    410b 
drivers/staging/media/atomisp/i2c/ov2722.o

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
---
 drivers/staging/media/atomisp/i2c/ov2722.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/media/atomisp/i2c/ov2722.c 
b/drivers/staging/media/atomisp/i2c/ov2722.c
index b7afade..10094ac 100644
--- a/drivers/staging/media/atomisp/i2c/ov2722.c
+++ b/drivers/staging/media/atomisp/i2c/ov2722.c
@@ -1337,7 +1337,7 @@ static int ov2722_probe(struct i2c_client *client,
 
 MODULE_DEVICE_TABLE(i2c, ov2722_id);
 
-static struct acpi_device_id ov2722_acpi_match[] = {
+static const struct acpi_device_id ov2722_acpi_match[] = {
        { "INT33FB" },
        {},
 };
-- 
2.7.4