[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>

1 files changed, 9 insertions, 18 deletions

diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c
index 92e2b950eff4..ee00aed9bdea 100644
--- 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;