[libata] sata_sx4, sata_via: minor documentation updates
sata_sx4:
- describe overall driver theory of operation
- add a few constants that will be used in the future
sata_via:
- remove mention of an old-EH function that is going away
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/sata_via.c b/drivers/ata/sata_via.c
index e8b90e7..e816965 100644
--- a/drivers/ata/sata_via.c
+++ b/drivers/ata/sata_via.c
@@ -303,9 +303,7 @@
if (!(ap->pflags & ATA_PFLAG_LOADING))
goto skip_scr;
- /* Resume phy. This is the old resume sequence from
- * __sata_phy_reset().
- */
+ /* Resume phy. This is the old SATA resume sequence */
svia_scr_write(ap, SCR_CONTROL, 0x300);
svia_scr_read(ap, SCR_CONTROL); /* flush */