diff options
| author | Tejun Heo <htejun@gmail.com> | 2006-07-26 15:59:25 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-07-29 04:01:31 -0400 |
| commit | d8fcd116d203dfe2f6c272d0cd67724b172f1bc2 (patch) | |
| tree | 4b6c9cd5f50c754f5be053a2722162bd337e6534 /drivers/scsi/ahci.c | |
| parent | 254950cd56fee220c9d548f3e57211b95976ba64 (diff) | |
[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>
Diffstat (limited to 'drivers/scsi/ahci.c')
| -rw-r--r-- | drivers/scsi/ahci.c | 27 |
1 files changed, 9 insertions, 18 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index 92e2b950eff..ee00aed9bde 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; |