There shouldn't be any problems with it as IDE hpt366 host driver
has been supporting enablebits checking for years.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ata/pata_hpt3x2n.c | 9 +++++++++
1 file changed, 9 insertions(+)
Index: b/drivers/ata/pata_hpt3x2n.c
===================================================================
--- a/drivers/ata/pata_hpt3x2n.c
+++ b/drivers/ata/pata_hpt3x2n.c
@@ -153,8 +153,17 @@ static int hpt3x2n_cable_detect(struct a
static int hpt3x2n_pre_reset(struct ata_link *link, unsigned long deadline)
{
+ static const struct pci_bits hpt37x_enable_bits[] = {
+ { 0x50, 1, 0x04, 0x04 },
+ { 0x54, 1, 0x04, 0x04 }
+ };
+
struct ata_port *ap = link->ap;
struct pci_dev *pdev = to_pci_dev(ap->host->dev);
+
+ if (!pci_test_config_bits(pdev, &hpt37x_enable_bits[ap->port_no]))
+ return -ENOENT;
+
/* Reset the state machine */
pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
udelay(100);
--
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