1 files changed, 8 insertions, 8 deletions

diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index 7a3d50dcd938..cb91894471f2 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -107,14 +107,14 @@ enum {
 
         PORT_PM                 = 0x0f80, /* 8 bytes PM * 16 (128 bytes) */
                 /* 32 bit regs */
-        PORT_CTRL_STAT          = 0x1000, /* write:ctrl, read:stat */
-        PORT_CTRL_CLR           = 0x1004,
-        PORT_IRQ_STAT           = 0x1008,
-        PORT_IRQ_ENABLE_SET     = 0x1010,
-        PORT_IRQ_ENABLE_CLR     = 0x1014,
+        PORT_CTRL_STAT          = 0x1000, /* write: ctrl-set, read: stat */
+        PORT_CTRL_CLR           = 0x1004, /* write: ctrl-clear */
+        PORT_IRQ_STAT           = 0x1008, /* high: status, low: interrupt */
+        PORT_IRQ_ENABLE_SET     = 0x1010, /* write: enable-set */
+        PORT_IRQ_ENABLE_CLR     = 0x1014, /* write: enable-clear */
         PORT_ACTIVATE_UPPER_ADDR= 0x101c,
-        PORT_EXEC_FIFO          = 0x1020,
-        PORT_CMD_ERR            = 0x1024,
+        PORT_EXEC_FIFO          = 0x1020, /* command execution fifo */
+        PORT_CMD_ERR            = 0x1024, /* command error number */
         PORT_FIS_CFG            = 0x1028,
         PORT_FIFO_THRES         = 0x102c,
                 /* 16 bit regs */
@@ -187,7 +187,7 @@ enum {
         PORT_CERR_XFR_TGTABRT   = 33, /* PSD ecode 01 - target abort */
         PORT_CERR_XFR_MSGABRT   = 34, /* PSD ecode 10 - master abort */
         PORT_CERR_XFR_PCIPERR   = 35, /* PSD ecode 11 - PCI prity err during transfer */
-        PORT_CERR_SENDSERVICE   = 36, /* FIS received whiel sending service */
+        PORT_CERR_SENDSERVICE   = 36, /* FIS received while sending service */
 
         /*
          * Other constants