---

yaml
---
r: 29267
b: refs/heads/master
c: ecc2e2b
h: refs/heads/master
i:
  29265: b59f771
  29263: ee3ac0b
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0eaa6058a6a664ce692e3dc38c6891a74ca47f59
+refs/heads/master: ecc2e2b9c97719592b3078d5a5a8666551c91115

trunk/drivers/scsi/sata_sil24.c

@@ -521,10 +521,47 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class)
 
 static int sil24_hardreset(struct ata_port *ap, unsigned int *class)
 {
-	unsigned int dummy_class;
+	void __iomem *port = (void __iomem *)ap->ioaddr.cmd_addr;
+	const char *reason;
+	int tout_msec;
+	u32 tmp;
+
+	/* sil24 does the right thing(tm) without any protection */
+	ata_set_sata_spd(ap);
+
+	tout_msec = 100;
+	if (sata_dev_present(ap))
+		tout_msec = 5000;
+
+	writel(PORT_CS_DEV_RST, port + PORT_CTRL_STAT);
+	tmp = ata_wait_register(port + PORT_CTRL_STAT,
+				PORT_CS_DEV_RST, PORT_CS_DEV_RST, 10, tout_msec);
+
+	/* SStatus oscillates between zero and valid status for short
+	 * duration after DEV_RST, give it time to settle.
+	 */
+	msleep(100);
+
+	if (tmp & PORT_CS_DEV_RST) {
+		if (!sata_dev_present(ap))
+			return 0;
+		reason = "link not ready";
+		goto err;
+	}
+
+	if (ata_busy_sleep(ap, ATA_TMOUT_BOOT_QUICK, ATA_TMOUT_BOOT)) {
+		reason = "device not ready";
+		goto err;
+	}
 
-	/* sil24 doesn't report device signature after hard reset */
-	return sata_std_hardreset(ap, &dummy_class);
+	/* sil24 doesn't report device class code after hardreset,
+	 * leave *class alone.
+	 */
+	return 0;
+
+ err:
+	printk(KERN_ERR "ata%u: hardreset failed (%s)\n", ap->id, reason);
+	return -EIO;
 }
 
 static int sil24_probe_reset(struct ata_port *ap, unsigned int *classes)