Re: sata_nv regression on Supermicro H8DMT+ for kernels newer than 2.6.25

[Chris Webb <chris@arachsys.com>]

Chris Webb <chris@arachsys.com> writes:

> I'm having some trouble with the sata_nv driver on a Supermicro Opteron
> motherboard. It's an H8DMT+ with an onboard nVidia MCP55V Pro SATA controller
> running the latest release of the BIOS.
[...]
> I imagine this implies that the chipset on this board has trouble with hard
> resets in some way, but I'd be grateful for any advice as to the most sensible
> next step to debug this!

Just to follow up to my report, the following patch seems to cure these
symptoms:

diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
--- a/drivers/ata/sata_nv.c
+++ b/drivers/ata/sata_nv.c
@@ -407,7 +407,7 @@
 
 static struct ata_port_operations nv_generic_ops = {
 	.inherits		= &ata_bmdma_port_ops,
-	.hardreset		= nv_hardreset,
+	.hardreset		= ATA_OP_NULL,
 	.scr_read		= nv_scr_read,
 	.scr_write		= nv_scr_write,
 };


Best wishes,

Chris.