libata: kill unused ata_flush_cache()

ata_flush_code() hasn't been in use for quite some time now.  Kill it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

2 files changed, 0 insertions, 27 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4d78f5debb6c..fa205d7c5bea 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -4800,32 +4800,6 @@ int ata_link_offline(struct ata_link *link)
         return 0;
 }
 
-int ata_flush_cache(struct ata_device *dev)
-{
-        unsigned int err_mask;
-        u8 cmd;
-
-        if (!ata_try_flush_cache(dev))
-                return 0;
-
-        if (dev->flags & ATA_DFLAG_FLUSH_EXT)
-                cmd = ATA_CMD_FLUSH_EXT;
-        else
-                cmd = ATA_CMD_FLUSH;
-
-        /* This is wrong. On a failed flush we get back the LBA of the lost
-           sector and we should (assuming it wasn't aborted as unknown) issue
-           a further flush command to continue the writeback until it
-           does not error */
-        err_mask = ata_do_simple_cmd(dev, cmd);
-        if (err_mask) {
-                ata_dev_printk(dev, KERN_ERR, "failed to flush cache\n");
-                return -EIO;
-        }
-
-        return 0;
-}
-
 #ifdef CONFIG_PM
 static int ata_host_request_pm(struct ata_host *host, pm_message_t mesg,
                                unsigned int action, unsigned int ehi_flags,
diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
index 5e8d0359bccb..11b5f67a19d4 100644
--- a/drivers/ata/libata.h
+++ b/drivers/ata/libata.h
@@ -96,7 +96,6 @@ extern void ata_qc_issue(struct ata_queued_cmd *qc);
 extern void __ata_qc_complete(struct ata_queued_cmd *qc);
 extern int ata_check_atapi_dma(struct ata_queued_cmd *qc);
 extern void swap_buf_le16(u16 *buf, unsigned int buf_words);
-extern int ata_flush_cache(struct ata_device *dev);
 extern void ata_dev_init(struct ata_device *dev);
 extern void ata_link_init(struct ata_port *ap, struct ata_link *link, int pmp);
 extern int sata_link_init_spd(struct ata_link *link);