From 07db51831371f2875ef234b1535a15afdb381b6c Mon Sep 17 00:00:00 2001 From: Andrew Vasquez Date: Mon, 2 Oct 2006 12:00:49 -0700 Subject: [SCSI] qla2xxx: Stall mid-layer error handlers while rport is blocked. Stall error handler if attempting recovery while an rport is blocked. This avoids device offline scenarios due to errors in the error handler. Reference implementation from lpfc/mptfc. Signed-off-by: Andrew Vasquez Signed-off-by: James Bottomley --- drivers/scsi/qla2xxx/qla_os.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index cdc7fca421b..3ba8c239f17 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -589,6 +589,23 @@ qla2x00_wait_for_loop_ready(scsi_qla_host_t *ha) return (return_status); } +static void +qla2x00_block_error_handler(struct scsi_cmnd *cmnd) +{ + struct Scsi_Host *shost = cmnd->device->host; + struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); + unsigned long flags; + + spin_lock_irqsave(shost->host_lock, flags); + while (rport->port_state == FC_PORTSTATE_BLOCKED) { + spin_unlock_irqrestore(shost->host_lock, flags); + msleep(1000); + spin_lock_irqsave(shost->host_lock, flags); + } + spin_unlock_irqrestore(shost->host_lock, flags); + return; +} + /************************************************************************** * qla2xxx_eh_abort * @@ -615,6 +632,8 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) unsigned long flags; int wait = 0; + qla2x00_block_error_handler(cmd); + if (!CMD_SP(cmd)) return SUCCESS; @@ -748,6 +767,8 @@ qla2xxx_eh_device_reset(struct scsi_cmnd *cmd) unsigned int id, lun; unsigned long serial; + qla2x00_block_error_handler(cmd); + ret = FAILED; id = cmd->device->id; @@ -877,6 +898,8 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd) unsigned int id, lun; unsigned long serial; + qla2x00_block_error_handler(cmd); + ret = FAILED; id = cmd->device->id; @@ -936,6 +959,8 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd) unsigned int id, lun; unsigned long serial; + qla2x00_block_error_handler(cmd); + ret = FAILED; id = cmd->device->id; -- cgit v1.2.3