From f934c9d082f9062a583c4a3980c1902814b7e950 Mon Sep 17 00:00:00 2001 From: Chad Dupuis Date: Fri, 11 Apr 2014 16:54:31 -0400 Subject: [PATCH] qla2xxx: Avoid escalating the SCSI error handler if the command is not found in firmware. If the firmware cannot find the command specified then return SUCCESS to the error handler so as not to needlessly escalate. Also cleanup the resources for the command since we cannot expect the original command to returned in interrupt context. Signed-off-by: Chad Dupuis Signed-off-by: Saurav Kashyap Signed-off-by: Christoph Hellwig --- drivers/scsi/qla2xxx/qla_def.h | 2 ++ drivers/scsi/qla2xxx/qla_mbx.c | 5 ++++- drivers/scsi/qla2xxx/qla_os.c | 24 ++++++++++++++++++++---- 3 files changed, 26 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index a81e8bab6f03..6c9724c1c5a4 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -1755,6 +1755,8 @@ typedef struct { #define CS_PORT_CONFIG_CHG 0x2A /* Port Configuration Changed */ #define CS_PORT_BUSY 0x2B /* Port Busy */ #define CS_COMPLETE_CHKCOND 0x30 /* Error? */ +#define CS_IOCB_ERROR 0x31 /* Generic error for IOCB request + failure */ #define CS_BAD_PAYLOAD 0x80 /* Driver defined */ #define CS_UNKNOWN 0x81 /* Driver defined */ #define CS_RETRY 0x82 /* Driver defined */ diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c index a2e3787e4112..01d9f54a3222 100644 --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -2644,7 +2644,10 @@ qla24xx_abort_command(srb_t *sp) ql_dbg(ql_dbg_mbx, vha, 0x1090, "Failed to complete IOCB -- completion status (%x).\n", le16_to_cpu(abt->nport_handle)); - rval = QLA_FUNCTION_FAILED; + if (abt->nport_handle == CS_IOCB_ERROR) + rval = QLA_FUNCTION_PARAMETER_ERROR; + else + rval = QLA_FUNCTION_FAILED; } else { ql_dbg(ql_dbg_mbx + ql_dbg_verbose, vha, 0x1091, "Done %s.\n", __func__); diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index b182d27695cf..8f1a098d270e 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -945,7 +945,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) int ret; unsigned int id, lun; unsigned long flags; - int wait = 0; + int rval, wait = 0; struct qla_hw_data *ha = vha->hw; if (!CMD_SP(cmd)) @@ -974,10 +974,20 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) sp_get(sp); spin_unlock_irqrestore(&ha->hardware_lock, flags); - if (ha->isp_ops->abort_command(sp)) { - ret = FAILED; + rval = ha->isp_ops->abort_command(sp); + if (rval) { + if (rval == QLA_FUNCTION_PARAMETER_ERROR) { + /* + * Decrement the ref_count since we can't find the + * command + */ + atomic_dec(&sp->ref_count); + ret = SUCCESS; + } else + ret = FAILED; + ql_dbg(ql_dbg_taskm, vha, 0x8003, - "Abort command mbx failed cmd=%p.\n", cmd); + "Abort command mbx failed cmd=%p, rval=%x.\n", cmd, rval); } else { ql_dbg(ql_dbg_taskm, vha, 0x8004, "Abort command mbx success cmd=%p.\n", cmd); @@ -985,6 +995,12 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) } spin_lock_irqsave(&ha->hardware_lock, flags); + /* + * Clear the slot in the oustanding_cmds array if we can't find the + * command to reclaim the resources. + */ + if (rval == QLA_FUNCTION_PARAMETER_ERROR) + vha->req->outstanding_cmds[sp->handle] = NULL; sp->done(ha, sp, 0); spin_unlock_irqrestore(&ha->hardware_lock, flags); -- 2.39.2