[PATCH] ahci: convert to new probing mechanism and add hotplug support

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Convert to new probing mechanism and add hotplug support by enabling
PORT_IRQ_PHYRDY, marking ehi for hotplug and scheduling EH on
CONNECT/PHYRDY interrupts.

Unfortunately, ahci cannot reliably wait for the first D2H FIS after
hotplug.  It sometimes succeeds but times out more often than not, so
ATA_FLAG_SKIP_D2H_BSY is used.

This patch also fixes ahci_hardreset() such that D2H Register FIS RX
area is cleared before issuing COMRESET.  Without this,
ata_busy_sleep() after COMRESET might prematually finish if the
previous TF contains DRDY && !BSY.

Signed-off-by: Tejun Heo <htejun@gmail.com>

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This commit is contained in:

Tejun Heo 2006-05-31 18:28:18 +09:00

parent e573890b00

commit 4296971dd3

1 changed files with 27 additions and 20 deletions

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drivers/scsi/ahci.c

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