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 5347 1920 24 7291 1c7b drivers/staging/media/atomisp/i2c/lm3554.o File size After adding 'const': text data bss dec hex filename 5411 1856 24 7291 1c7b drivers/staging/media/atomisp/i2c/lm3554.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx> --- drivers/staging/media/atomisp/i2c/lm3554.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/media/atomisp/i2c/lm3554.c b/drivers/staging/media/atomisp/i2c/lm3554.c index dd9c9c3..9ba1037 100644 --- a/drivers/staging/media/atomisp/i2c/lm3554.c +++ b/drivers/staging/media/atomisp/i2c/lm3554.c @@ -974,7 +974,7 @@ static const struct dev_pm_ops lm3554_pm_ops = { .resume = lm3554_resume, }; -static struct acpi_device_id lm3554_acpi_match[] = { +static const struct acpi_device_id lm3554_acpi_match[] = { { "INTCF1C" }, {}, }; -- 2.7.4