ata_piix: constify pci_bits

pci_bits are not supposed to change at runtime. Functions
pci_test_config_bits() working with const 'struct pci_bits'.
So mark the non-const structs as const.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index b702c20fbc2bbb2d9ebcb6188e5e1f522adf9271..7ecb1322a5142f53c5d0e6e9fa1c9d26984ae6e3 100644 (file)
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -458,7 +458,7 @@ static const struct piix_map_db *piix_map_db_table[] = {
        [ich8_2port_sata_byt]   = &ich8_2port_map_db,
 };
 
-static struct pci_bits piix_enable_bits[] = {
+static const struct pci_bits piix_enable_bits[] = {
        { 0x41U, 1U, 0x80UL, 0x80UL },  /* port 0 */
        { 0x43U, 1U, 0x80UL, 0x80UL },  /* port 1 */
 };