ata: move sata_link_hardreset() to libata-sata.c

* move sata_link_hardreset() to libata-sata.c

* add static inline for CONFIG_SATA_HOST=n case

* make sata_set_spd_needed() static

Code size savings on m68k arch using (modified) atari_defconfig:

   text    data     bss     dec     hex filename
before:
  32724     572      40   33336    8238 drivers/ata/libata-core.o
after:
  32559     572      40   33171    8193 drivers/ata/libata-core.o

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 0 insertions, 113 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 4ca81ef7c8bd..19624d056d92 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3532,119 +3532,6 @@ int ata_std_prereset(struct ata_link *link, unsigned long deadline)
 EXPORT_SYMBOL_GPL(ata_std_prereset);
 
 /**
- *	sata_link_hardreset - reset link via SATA phy reset
- *	@link: link to reset
- *	@timing: timing parameters { interval, duration, timeout } in msec
- *	@deadline: deadline jiffies for the operation
- *	@online: optional out parameter indicating link onlineness
- *	@check_ready: optional callback to check link readiness
- *
- *	SATA phy-reset @link using DET bits of SControl register.
- *	After hardreset, link readiness is waited upon using
- *	ata_wait_ready() if @check_ready is specified.  LLDs are
- *	allowed to not specify @check_ready and wait itself after this
- *	function returns.  Device classification is LLD's
- *	responsibility.
- *
- *	*@online is set to one iff reset succeeded and @link is online
- *	after reset.
- *
- *	LOCKING:
- *	Kernel thread context (may sleep)
- *
- *	RETURNS:
- *	0 on success, -errno otherwise.
- */
-int sata_link_hardreset(struct ata_link *link, const unsigned long *timing,
-			unsigned long deadline,
-			bool *online, int (*check_ready)(struct ata_link *))
-{
-	u32 scontrol;
-	int rc;
-
-	DPRINTK("ENTER\n");
-
-	if (online)
-		*online = false;
-
-	if (sata_set_spd_needed(link)) {
-		/* SATA spec says nothing about how to reconfigure
-		 * spd.  To be on the safe side, turn off phy during
-		 * reconfiguration.  This works for at least ICH7 AHCI
-		 * and Sil3124.
-		 */
-		if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
-			goto out;
-
-		scontrol = (scontrol & 0x0f0) | 0x304;
-
-		if ((rc = sata_scr_write(link, SCR_CONTROL, scontrol)))
-			goto out;
-
-		sata_set_spd(link);
-	}
-
-	/* issue phy wake/reset */
-	if ((rc = sata_scr_read(link, SCR_CONTROL, &scontrol)))
-		goto out;
-
-	scontrol = (scontrol & 0x0f0) | 0x301;
-
-	if ((rc = sata_scr_write_flush(link, SCR_CONTROL, scontrol)))
-		goto out;
-
-	/* Couldn't find anything in SATA I/II specs, but AHCI-1.1
-	 * 10.4.2 says at least 1 ms.
-	 */
-	ata_msleep(link->ap, 1);
-
-	/* bring link back */
-	rc = sata_link_resume(link, timing, deadline);
-	if (rc)
-		goto out;
-	/* if link is offline nothing more to do */
-	if (ata_phys_link_offline(link))
-		goto out;
-
-	/* Link is online.  From this point, -ENODEV too is an error. */
-	if (online)
-		*online = true;
-
-	if (sata_pmp_supported(link->ap) && ata_is_host_link(link)) {
-		/* If PMP is supported, we have to do follow-up SRST.
-		 * Some PMPs don't send D2H Reg FIS after hardreset if
-		 * the first port is empty.  Wait only for
-		 * ATA_TMOUT_PMP_SRST_WAIT.
-		 */
-		if (check_ready) {
-			unsigned long pmp_deadline;
-
-			pmp_deadline = ata_deadline(jiffies,
-						    ATA_TMOUT_PMP_SRST_WAIT);
-			if (time_after(pmp_deadline, deadline))
-				pmp_deadline = deadline;
-			ata_wait_ready(link, pmp_deadline, check_ready);
-		}
-		rc = -EAGAIN;
-		goto out;
-	}
-
-	rc = 0;
-	if (check_ready)
-		rc = ata_wait_ready(link, deadline, check_ready);
- out:
-	if (rc && rc != -EAGAIN) {
-		/* online is set iff link is online && reset succeeded */
-		if (online)
-			*online = false;
-		ata_link_err(link, "COMRESET failed (errno=%d)\n", rc);
-	}
-	DPRINTK("EXIT, rc=%d\n", rc);
-	return rc;
-}
-EXPORT_SYMBOL_GPL(sata_link_hardreset);
-
-/**
  *	sata_std_hardreset - COMRESET w/o waiting or classification
  *	@link: link to reset
  *	@class: resulting class of attached device