libata: clean up dummy port_ops

Now that SFF assumptions are removed from core layer, dummy port_ops
can be slimmed down.  Chop it down.

Signed-off-by: Tejun Heo <htejun@gmail.com>

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index f23f50a..3a94c69 100644 (file)
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6159,32 +6159,20 @@ u32 ata_wait_register(void __iomem *reg, u32 mask, u32 val,
 /*
  * Dummy port_ops
  */
-static void ata_dummy_noret(struct ata_port *ap)       { }
-static int ata_dummy_ret0(struct ata_port *ap)         { return 0; }
-static void ata_dummy_qc_noret(struct ata_queued_cmd *qc) { }
-
-static u8 ata_dummy_check_status(struct ata_port *ap)
+static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
 {
-       return ATA_DRDY;
+       return AC_ERR_SYSTEM;
 }
 
-static unsigned int ata_dummy_qc_issue(struct ata_queued_cmd *qc)
+static void ata_dummy_error_handler(struct ata_port *ap)
 {
-       return AC_ERR_SYSTEM;
+       /* truly dummy */
 }
 
 struct ata_port_operations ata_dummy_port_ops = {
-       .sff_check_status       = ata_dummy_check_status,
-       .sff_check_altstatus    = ata_dummy_check_status,
        .qc_prep                = ata_noop_qc_prep,
        .qc_issue               = ata_dummy_qc_issue,
-       .freeze                 = ata_dummy_noret,
-       .thaw                   = ata_dummy_noret,
-       .error_handler          = ata_dummy_noret,
-       .post_internal_cmd      = ata_dummy_qc_noret,
-       .sff_irq_clear          = ata_dummy_noret,
-       .port_start             = ata_dummy_ret0,
-       .port_stop              = ata_dummy_noret,
+       .error_handler          = ata_dummy_error_handler,
 };
 
 const struct ata_port_info ata_dummy_port_info = {