1 files changed, 24 insertions, 8 deletions

diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c
index 81bdc10a6e9..4f2a67ed39d 100644
--- a/drivers/scsi/sata_sil.c
+++ b/drivers/scsi/sata_sil.c
@@ -49,14 +49,30 @@
 #define DRV_VERSION     "0.9"
 
 enum {
+        /*
+         * host flags
+         */
         SIL_FLAG_RERR_ON_DMA_ACT = (1 << 29),
         SIL_FLAG_MOD15WRITE     = (1 << 30),
+        SIL_DFL_HOST_FLAGS      = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
+                                  ATA_FLAG_MMIO,
 
+        /*
+         * Controller IDs
+         */
         sil_3112                = 0,
         sil_3512                = 1,
         sil_3114                = 2,
 
+        /*
+         * Register offsets
+         */
         SIL_SYSCFG              = 0x48,
+
+        /*
+         * Register bits
+         */
+        /* SYSCFG */
         SIL_MASK_IDE0_INT       = (1 << 22),
         SIL_MASK_IDE1_INT       = (1 << 23),
         SIL_MASK_IDE2_INT       = (1 << 24),
@@ -65,7 +81,12 @@ enum {
         SIL_MASK_4PORT          = SIL_MASK_2PORT |
                                   SIL_MASK_IDE2_INT | SIL_MASK_IDE3_INT,
 
+        /* BMDMA/BMDMA2 */
         SIL_INTR_STEERING       = (1 << 1),
+
+        /*
+         * Others
+         */
         SIL_QUIRK_MOD15WRITE    = (1 << 0),
         SIL_QUIRK_UDMA5MAX      = (1 << 1),
 };
@@ -169,8 +190,7 @@ static const struct ata_port_info sil_port_info[] = {
         /* sil_3112 */
         {
                 .sht            = &sil_sht,
-                .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-                                  ATA_FLAG_MMIO | SIL_FLAG_MOD15WRITE,
+                .host_flags     = SIL_DFL_HOST_FLAGS | SIL_FLAG_MOD15WRITE,
                 .pio_mask       = 0x1f,                 /* pio0-4 */
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */
@@ -179,9 +199,7 @@ static const struct ata_port_info sil_port_info[] = {
         /* sil_3512 */
         {
                 .sht            = &sil_sht,
-                .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-                                  ATA_FLAG_MMIO |
-                                  SIL_FLAG_RERR_ON_DMA_ACT,
+                .host_flags     = SIL_DFL_HOST_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
                 .pio_mask       = 0x1f,                 /* pio0-4 */
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */
@@ -190,9 +208,7 @@ static const struct ata_port_info sil_port_info[] = {
         /* sil_3114 */
         {
                 .sht            = &sil_sht,
-                .host_flags     = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
-                                  ATA_FLAG_MMIO |
-                                  SIL_FLAG_RERR_ON_DMA_ACT,
+                .host_flags     = SIL_DFL_HOST_FLAGS | SIL_FLAG_RERR_ON_DMA_ACT,
                 .pio_mask       = 0x1f,                 /* pio0-4 */
                 .mwdma_mask     = 0x07,                 /* mwdma0-2 */
                 .udma_mask      = 0x3f,                 /* udma0-5 */