X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Fide%2Fhpt366.c;h=58c51cddc1002500b67d5799d70a55f21fab74bb;hb=20b4755e4fbb226eb42951bd40b53fcbce9ef944;hp=97d98fbf5849e5997fa42cf1ddf97be3040043d8;hpb=74eb94b218d087798a52c0b4f1379b635287a4b8;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c
index 97d98fbf5849..58c51cddc100 100644
--- a/drivers/ide/hpt366.c
+++ b/drivers/ide/hpt366.c
@@ -838,7 +838,7 @@ static void hpt3xxn_set_clock(ide_hwif_t *hwif, u8 mode)
 
 static void hpt3xxn_rw_disk(ide_drive_t *drive, struct request *rq)
 {
-	hpt3xxn_set_clock(drive->hwif, rq_data_dir(rq) ? 0x23 : 0x21);
+	hpt3xxn_set_clock(drive->hwif, rq_data_dir(rq) ? 0x21 : 0x23);
 }
 
 /**
@@ -1173,8 +1173,9 @@ static u8 hpt3xx_cable_detect(ide_hwif_t *hwif)
 		u16 mcr;
 
 		pci_read_config_word(dev, mcr_addr, &mcr);
-		pci_write_config_word(dev, mcr_addr, (mcr | 0x8000));
-		/* now read cable id register */
+		pci_write_config_word(dev, mcr_addr, mcr | 0x8000);
+		/* Debounce, then read cable ID register */
+		udelay(10);
 		pci_read_config_byte(dev, 0x5a, &scr1);
 		pci_write_config_word(dev, mcr_addr, mcr);
 	} else if (chip_type >= HPT370) {
@@ -1185,10 +1186,11 @@ static u8 hpt3xx_cable_detect(ide_hwif_t *hwif)
 		u8 scr2 = 0;
 
 		pci_read_config_byte(dev, 0x5b, &scr2);
-		pci_write_config_byte(dev, 0x5b, (scr2 & ~1));
-		/* now read cable id register */
+		pci_write_config_byte(dev, 0x5b, scr2 & ~1);
+		/* Debounce, then read cable ID register */
+		udelay(10);
 		pci_read_config_byte(dev, 0x5a, &scr1);
-		pci_write_config_byte(dev, 0x5b,  scr2);
+		pci_write_config_byte(dev, 0x5b, scr2);
 	} else
 		pci_read_config_byte(dev, 0x5a, &scr1);