There still are remaining issues with ADMA support. Disable it by
default and warn when enabling.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
---
Jeff, please hold off till Robert acks. Robert, what do you think?
drivers/ata/sata_nv.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
index ed5dc7c..27a0e34 100644
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -639,7 +639,7 @@ MODULE_LICENSE("GPL");
MODULE_DEVICE_TABLE(pci, nv_pci_tbl);
MODULE_VERSION(DRV_VERSION);
-static int adma_enabled = 1;
+static int adma_enabled = 0;
static int swncq_enabled;
static void nv_adma_register_mode(struct ata_port *ap)
@@ -2396,6 +2396,9 @@ static int nv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
/* determine type and allocate host */
if (type == CK804 && adma_enabled) {
dev_printk(KERN_NOTICE, &pdev->dev, "Using ADMA mode\n");
+ dev_printk(KERN_WARNING, &pdev->dev,
+ "WARNING: There are known problems with ADMA mode "
+ "which may lead to timeouts and/or system lock ups.\n");
type = ADMA;
}
-
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