libata: make ata_port_type const
Make this const as it is only stored in the const field of a device
structure. Make the declaration in header const too.
Structure found using Coccinelle and changes done by hand.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 839d487..18bf1e9 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -51,7 +51,7 @@ extern int atapi_passthru16;
extern int libata_fua;
extern int libata_noacpi;
extern int libata_allow_tpm;
-extern struct device_type ata_port_type;
+extern const struct device_type ata_port_type;
extern struct ata_link *ata_dev_phys_link(struct ata_device *dev);
extern void ata_force_cbl(struct ata_port *ap);
extern u64 ata_tf_to_lba(const struct ata_taskfile *tf);