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[SCSI] ipr: SATA reset - wait for host reset completion 

If an ipr adapter hits a fatal microcode error requiring a reset
while a SATA device is going through EH, it can result in a command
getting issued to the ipr adapter while it is getting reset, which
can cause PCI bus errors. Wait for any outstanding adapter reset
to finish prior to issuing a SATA device reset.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Brian King 2006-11-21 10:27:58 -06:00 committed by James Bottomley
parent 7feb6b3fbb
commit 73d98ff0fa
1 changed files with 12 additions and 0 deletions
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12
drivers/scsi/ipr.c
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@ -3573,6 +3573,12 @@ static int ipr_sata_reset(struct ata_port *ap, unsigned int *classes)
ENTER; ENTER;
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags); spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
while(ioa_cfg->in_reset_reload) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, lock_flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, lock_flags);
}
res = sata_port->res; res = sata_port->res;
if (res) { if (res) {
rc = ipr_device_reset(ioa_cfg, res); rc = ipr_device_reset(ioa_cfg, res);
@ -4776,6 +4782,12 @@ static void ipr_ata_post_internal(struct ata_queued_cmd *qc)
unsigned long flags; unsigned long flags;
spin_lock_irqsave(ioa_cfg->host->host_lock, flags); spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
while(ioa_cfg->in_reset_reload) {
spin_unlock_irqrestore(ioa_cfg->host->host_lock, flags);
wait_event(ioa_cfg->reset_wait_q, !ioa_cfg->in_reset_reload);
spin_lock_irqsave(ioa_cfg->host->host_lock, flags);
}
list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) { list_for_each_entry(ipr_cmd, &ioa_cfg->pending_q, queue) {
if (ipr_cmd->qc == qc) { if (ipr_cmd->qc == qc) {
ipr_device_reset(ioa_cfg, sata_port->res); ipr_device_reset(ioa_cfg, sata_port->res);