From cda776f13317831730d8f0ca2669cb242b301581 Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Wed, 26 Jul 2006 15:59:26 +0900
Subject: [PATCH] --- yaml --- r: 35361 b: refs/heads/master c:
 9f5920567bfabbd1be26112a31c44652b6587394 h: refs/heads/master i:   35359:
 d99fab1661fe38d339a3d9dd6b5b33d8af9acba1 v: v3

---
 [refs]                    |  2 +-
 trunk/drivers/scsi/ahci.c | 21 ++-------------------
 2 files changed, 3 insertions(+), 20 deletions(-)

diff --git a/[refs] b/[refs]
index 4a02ce4d63ae..cce45d30e46c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: d8fcd116d203dfe2f6c272d0cd67724b172f1bc2
+refs/heads/master: 9f5920567bfabbd1be26112a31c44652b6587394
diff --git a/trunk/drivers/scsi/ahci.c b/trunk/drivers/scsi/ahci.c
index ee00aed9bdea..e02b9c65287b 100644
--- a/trunk/drivers/scsi/ahci.c
+++ b/trunk/drivers/scsi/ahci.c
@@ -406,32 +406,15 @@ static void ahci_scr_write (struct ata_port *ap, unsigned int sc_reg_in,
 	writel(val, (void __iomem *) ap->ioaddr.scr_addr + (sc_reg * 4));
 }
 
-static int ahci_start_engine(void __iomem *port_mmio)
+static void ahci_start_engine(void __iomem *port_mmio)
 {
 	u32 tmp;
 
-	/* get current status */
-	tmp = readl(port_mmio + PORT_CMD);
-
-	/* AHCI rev 1.1 section 10.3.1:
-	 * Software shall not set PxCMD.ST to '1' until it verifies
-	 * that PxCMD.CR is '0' and has set PxCMD.FRE to '1'
-	 */
-	if ((tmp & PORT_CMD_FIS_RX) == 0)
-		return -EPERM;
-
-	/* wait for engine to become idle */
-	tmp = ata_wait_register(port_mmio + PORT_CMD,
-				PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1,500);
-	if (tmp & PORT_CMD_LIST_ON)
-		return -EBUSY;
-
 	/* start DMA */
+	tmp = readl(port_mmio + PORT_CMD);
 	tmp |= PORT_CMD_START;
 	writel(tmp, port_mmio + PORT_CMD);
 	readl(port_mmio + PORT_CMD); /* flush */
-
-	return 0;
 }
 
 static int ahci_stop_engine(void __iomem *port_mmio)