2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c
index 0921e8b30a08..9f5189c700bb 100644
--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -316,6 +316,9 @@ static int hpt37x_cable_detect(struct ata_port *ap)
 
         pci_read_config_byte(pdev, 0x5B, &scr2);
         pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
+
+        udelay(10); /* debounce */
+
         /* Cable register now active */
         pci_read_config_byte(pdev, 0x5A, &ata66);
         /* Restore state */
diff --git a/drivers/ata/pata_hpt3x2n.c b/drivers/ata/pata_hpt3x2n.c
index 2ab9fd6c597f..8d63eba782ff 100644
--- a/drivers/ata/pata_hpt3x2n.c
+++ b/drivers/ata/pata_hpt3x2n.c
@@ -128,6 +128,9 @@ static int hpt3x2n_cable_detect(struct ata_port *ap)
 
         pci_read_config_byte(pdev, 0x5B, &scr2);
         pci_write_config_byte(pdev, 0x5B, scr2 & ~0x01);
+
+        udelay(10); /* debounce */
+
         /* Cable register now active */
         pci_read_config_byte(pdev, 0x5A, &ata66);
         /* Restore state */