Commit 094e50b2 authored Apr 16, 2008 by Mark Lord Committed by Jeff Garzik Apr 17, 2008

sata_mv add temporary 3 second init delay for SiliconImage PMs

sata_mv does not yet fully support hotplug (coming soon, though).
This means that the driver may not find a Silicon Image port-multiplier
when first loaded, because those devices take in exceess of 3 seconds
to sync up the SATA PHY (most devices do this in mere microseconds).

So, as a short-term interim measure, here we insert a 3-second pause
on initial driver load, once per controller board (not once per port!),
to allow the Silicon Image port-multipliers to be detected later.

This will be removed again (soon!) once hotplug is fully implemented/working.

Signed-off-by: Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

parent 8a74f1a4

drivers/ata/sata_mv.c

+7 −0

Original line number	Original line	Diff line number	Diff line
	@@ -2105,6 +2105,13 @@ static int mv6_reset_hc(struct mv_host_priv hpriv, void __iomem mmio,
	printk(KERN_ERR DRV_NAME ": can't clear global reset\n");		printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
	rc = 1;		rc = 1;
	}		}
			/*
			* Temporary: wait 3 seconds before port-probing can happen,
			* so that we don't miss finding sleepy SilXXXX port-multipliers.
			* This can go away once hotplug is fully/correctly implemented.
			*/
			if (rc == 0)
			msleep(3000);
	done:		done:
	return rc;		return rc;
	}		}