libata: remove check_status from non-SFF drivers

Now that all SFF stuff is separated out of core layer, core layer
doesn't call ops->[alt_]check_status().  In fact, no one calls them
for non-SFF drivers anymore.  Kill them.

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

1 files changed, 2 insertions, 15 deletions

diff --git a/drivers/ata/sata_sil24.c b/drivers/ata/sata_sil24.c
index 51a7c06803df..15a4067149b7 100644
--- a/drivers/ata/sata_sil24.c
+++ b/drivers/ata/sata_sil24.c
@@ -336,12 +336,10 @@ static struct sil24_cerr_info {
 struct sil24_port_priv {
         union sil24_cmd_block *cmd_block;       /* 32 cmd blocks */
         dma_addr_t cmd_block_dma;               /* DMA base addr for them */
-        struct ata_taskfile tf;                 /* Cached taskfile registers */
         int do_port_rst;
 };
 
 static void sil24_dev_config(struct ata_device *dev);
-static u8 sil24_check_status(struct ata_port *ap);
 static int sil24_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val);
 static int sil24_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val);
 static int sil24_qc_defer(struct ata_queued_cmd *qc);
@@ -401,8 +399,6 @@ static struct scsi_host_template sil24_sht = {
 static struct ata_port_operations sil24_ops = {
         .inherits               = &sata_pmp_port_ops,
 
-        .sff_check_status       = sil24_check_status,
-        .sff_check_altstatus    = sil24_check_status,
         .qc_defer               = sil24_qc_defer,
         .qc_prep                = sil24_qc_prep,
         .qc_issue               = sil24_qc_issue,
@@ -492,12 +488,6 @@ static void sil24_read_tf(struct ata_port *ap, int tag, struct ata_taskfile *tf)
         ata_tf_from_fis(fis, tf);
 }
 
-static u8 sil24_check_status(struct ata_port *ap)
-{
-        struct sil24_port_priv *pp = ap->private_data;
-        return pp->tf.command;
-}
-
 static int sil24_scr_map[] = {
         [SCR_CONTROL]   = 0,
         [SCR_STATUS]    = 1,
@@ -1074,10 +1064,9 @@ static void sil24_error_intr(struct ata_port *ap)
                 }
 
                 /* record error info */
-                if (qc) {
-                        sil24_read_tf(ap, qc->tag, &pp->tf);
+                if (qc)
                         qc->err_mask |= err_mask;
-                } else
+                else
                         ehi->err_mask |= err_mask;
 
                 ehi->action |= action;
@@ -1210,8 +1199,6 @@ static int sil24_port_start(struct ata_port *ap)
         if (!pp)
                 return -ENOMEM;
 
-        pp->tf.command = ATA_DRDY;
-
         cb = dmam_alloc_coherent(dev, cb_size, &cb_dma, GFP_KERNEL);
         if (!cb)
                 return -ENOMEM;