[PATCH] ahci: cosmetic changes to ahci_start/stop_engine()

* fascist-format comments according to comment style used in libata
  core layer.

* if() -> if ()

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Zhao, Forrest <forrest.zhao@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 92e2b95..ee00aed 100644 (file)
--- a/drivers/scsi/ahci.c
+++ b/drivers/scsi/ahci.c
@@ -410,30 +410,23 @@ static int ahci_start_engine(void __iomem *port_mmio)
 {
        u32 tmp;
 
-       /*
-        * Get current status
-        */
+       /* get current status */
        tmp = readl(port_mmio + PORT_CMD);
 
-       /*
-        * AHCI rev 1.1 section 10.3.1:
+       /* 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.
-        */
+       /* 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)
+       if (tmp & PORT_CMD_LIST_ON)
                return -EBUSY;
 
-       /*
-        * Start DMA
-        */
+       /* start DMA */
        tmp |= PORT_CMD_START;
        writel(tmp, port_mmio + PORT_CMD);
        readl(port_mmio + PORT_CMD); /* flush */
@@ -447,20 +440,18 @@ static int ahci_stop_engine(void __iomem *port_mmio)
 
        tmp = readl(port_mmio + PORT_CMD);
 
-       /* Check if the HBA is idle */
+       /* check if the HBA is idle */
        if ((tmp & (PORT_CMD_START | PORT_CMD_LIST_ON)) == 0)
                return 0;
 
-       /* Setting HBA to idle */
+       /* setting HBA to idle */
        tmp &= ~PORT_CMD_START;
        writel(tmp, port_mmio + PORT_CMD);
 
-       /* wait for engine to stop. This could be
-        * as long as 500 msec
-        */
+       /* wait for engine to stop. This could be as long as 500 msec */
        tmp = ata_wait_register(port_mmio + PORT_CMD,
                                PORT_CMD_LIST_ON, PORT_CMD_LIST_ON, 1, 500);
-       if(tmp & PORT_CMD_LIST_ON)
+       if (tmp & PORT_CMD_LIST_ON)
                return -EIO;
 
        return 0;