| commit | 4296971dd36e2c2deae0826305f591480223af88 | |
| author | Tejun Heo <htejun@gmail.com> | |
| Wed, 31 May 2006 09:28:18 +0000 (31 18:28 +0900) | ||
| committer | Tejun Heo <htejun@gmail.com> | |
| Wed, 31 May 2006 09:28:18 +0000 (31 18:28 +0900) | ||
| tree | bd3cce15c252cea18869b39da231d542a6255e59 | treesnapshot (tar.gz zip) |
| parent | e573890b00426189e1e223967a2c46fb758bf06e | commitdiff |
[PATCH] ahci: convert to new probing mechanism and add hotplug support
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>
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>
| drivers/scsi/ahci.c | diffblobblamehistory |