diff options
-rw-r--r-- | MAINTAINERS | 5 | ||||
-rw-r--r-- | drivers/scsi/ipr.c | 92 | ||||
-rw-r--r-- | drivers/scsi/ipr.h | 1 | ||||
-rw-r--r-- | drivers/scsi/scsi_debug.c | 4 | ||||
-rw-r--r-- | drivers/scsi/scsi_lib.c | 12 |
5 files changed, 108 insertions, 6 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 6b7a694bf454..2ebb056cbe0a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -4750,14 +4750,14 @@ S: Supported F: drivers/net/ethernet/ibm/ibmveth.* IBM Power Virtual SCSI Device Drivers -M: Nathan Fontenot <nfont@linux.vnet.ibm.com> +M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> L: linux-scsi@vger.kernel.org S: Supported F: drivers/scsi/ibmvscsi/ibmvscsi* F: drivers/scsi/ibmvscsi/viosrp.h IBM Power Virtual FC Device Drivers -M: Brian King <brking@linux.vnet.ibm.com> +M: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> L: linux-scsi@vger.kernel.org S: Supported F: drivers/scsi/ibmvscsi/ibmvfc* @@ -4946,7 +4946,6 @@ K: \b(ABS|SYN)_MT_ INTEL C600 SERIES SAS CONTROLLER DRIVER M: Intel SCU Linux support <intel-linux-scu@intel.com> M: Artur Paszkiewicz <artur.paszkiewicz@intel.com> -M: Dave Jiang <dave.jiang@intel.com> L: linux-scsi@vger.kernel.org T: git git://git.code.sf.net/p/intel-sas/isci S: Supported diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c index df4e27cd996a..9219953ee949 100644 --- a/drivers/scsi/ipr.c +++ b/drivers/scsi/ipr.c @@ -683,6 +683,7 @@ static void ipr_init_ipr_cmnd(struct ipr_cmnd *ipr_cmd, ipr_reinit_ipr_cmnd(ipr_cmd); ipr_cmd->u.scratch = 0; ipr_cmd->sibling = NULL; + ipr_cmd->eh_comp = NULL; ipr_cmd->fast_done = fast_done; init_timer(&ipr_cmd->timer); } @@ -848,6 +849,8 @@ static void ipr_scsi_eh_done(struct ipr_cmnd *ipr_cmd) scsi_dma_unmap(ipr_cmd->scsi_cmd); scsi_cmd->scsi_done(scsi_cmd); + if (ipr_cmd->eh_comp) + complete(ipr_cmd->eh_comp); list_add_tail(&ipr_cmd->queue, &ipr_cmd->hrrq->hrrq_free_q); } @@ -4811,6 +4814,84 @@ static int ipr_slave_alloc(struct scsi_device *sdev) return rc; } +/** + * ipr_match_lun - Match function for specified LUN + * @ipr_cmd: ipr command struct + * @device: device to match (sdev) + * + * Returns: + * 1 if command matches sdev / 0 if command does not match sdev + **/ +static int ipr_match_lun(struct ipr_cmnd *ipr_cmd, void *device) +{ + if (ipr_cmd->scsi_cmd && ipr_cmd->scsi_cmd->device == device) + return 1; + return 0; +} + +/** + * ipr_wait_for_ops - Wait for matching commands to complete + * @ipr_cmd: ipr command struct + * @device: device to match (sdev) + * @match: match function to use + * + * Returns: + * SUCCESS / FAILED + **/ +static int ipr_wait_for_ops(struct ipr_ioa_cfg *ioa_cfg, void *device, + int (*match)(struct ipr_cmnd *, void *)) +{ + struct ipr_cmnd *ipr_cmd; + int wait; + unsigned long flags; + struct ipr_hrr_queue *hrrq; + signed long timeout = IPR_ABORT_TASK_TIMEOUT; + DECLARE_COMPLETION_ONSTACK(comp); + + ENTER; + do { + wait = 0; + + for_each_hrrq(hrrq, ioa_cfg) { + spin_lock_irqsave(hrrq->lock, flags); + list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) { + if (match(ipr_cmd, device)) { + ipr_cmd->eh_comp = ∁ + wait++; + } + } + spin_unlock_irqrestore(hrrq->lock, flags); + } + + if (wait) { + timeout = wait_for_completion_timeout(&comp, timeout); + + if (!timeout) { + wait = 0; + + for_each_hrrq(hrrq, ioa_cfg) { + spin_lock_irqsave(hrrq->lock, flags); + list_for_each_entry(ipr_cmd, &hrrq->hrrq_pending_q, queue) { + if (match(ipr_cmd, device)) { + ipr_cmd->eh_comp = NULL; + wait++; + } + } + spin_unlock_irqrestore(hrrq->lock, flags); + } + + if (wait) + dev_err(&ioa_cfg->pdev->dev, "Timed out waiting for aborted commands\n"); + LEAVE; + return wait ? FAILED : SUCCESS; + } + } + } while (wait); + + LEAVE; + return SUCCESS; +} + static int ipr_eh_host_reset(struct scsi_cmnd *cmd) { struct ipr_ioa_cfg *ioa_cfg; @@ -5030,11 +5111,17 @@ static int __ipr_eh_dev_reset(struct scsi_cmnd *scsi_cmd) static int ipr_eh_dev_reset(struct scsi_cmnd *cmd) { int rc; + struct ipr_ioa_cfg *ioa_cfg; + + ioa_cfg = (struct ipr_ioa_cfg *) cmd->device->host->hostdata; spin_lock_irq(cmd->device->host->host_lock); rc = __ipr_eh_dev_reset(cmd); spin_unlock_irq(cmd->device->host->host_lock); + if (rc == SUCCESS) + rc = ipr_wait_for_ops(ioa_cfg, cmd->device, ipr_match_lun); + return rc; } @@ -5234,13 +5321,18 @@ static int ipr_eh_abort(struct scsi_cmnd *scsi_cmd) { unsigned long flags; int rc; + struct ipr_ioa_cfg *ioa_cfg; ENTER; + ioa_cfg = (struct ipr_ioa_cfg *) scsi_cmd->device->host->hostdata; + spin_lock_irqsave(scsi_cmd->device->host->host_lock, flags); rc = ipr_cancel_op(scsi_cmd); spin_unlock_irqrestore(scsi_cmd->device->host->host_lock, flags); + if (rc == SUCCESS) + rc = ipr_wait_for_ops(ioa_cfg, scsi_cmd->device, ipr_match_lun); LEAVE; return rc; } diff --git a/drivers/scsi/ipr.h b/drivers/scsi/ipr.h index b4f3eec51bc9..ec03b42fa2b9 100644 --- a/drivers/scsi/ipr.h +++ b/drivers/scsi/ipr.h @@ -1606,6 +1606,7 @@ struct ipr_cmnd { struct scsi_device *sdev; } u; + struct completion *eh_comp; struct ipr_hrr_queue *hrrq; struct ipr_ioa_cfg *ioa_cfg; }; diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 7b8b51bc29b4..4aca1b0378c2 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -1623,7 +1623,7 @@ resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) req_opcode = cmd[3]; req_sa = get_unaligned_be16(cmd + 4); alloc_len = get_unaligned_be32(cmd + 6); - if (alloc_len < 4 && alloc_len > 0xffff) { + if (alloc_len < 4 || alloc_len > 0xffff) { mk_sense_invalid_fld(scp, SDEB_IN_CDB, 6, -1); return check_condition_result; } @@ -1631,7 +1631,7 @@ resp_rsup_opcodes(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) a_len = 8192; else a_len = alloc_len; - arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_KERNEL); + arr = kzalloc((a_len < 256) ? 320 : a_len + 64, GFP_ATOMIC); if (NULL == arr) { mk_sense_buffer(scp, ILLEGAL_REQUEST, INSUFF_RES_ASC, INSUFF_RES_ASCQ); diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 6d5c0b8cb0bb..17bb541f7cc2 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1143,7 +1143,17 @@ int scsi_init_io(struct scsi_cmnd *cmd) struct scsi_data_buffer *prot_sdb = cmd->prot_sdb; int ivecs, count; - BUG_ON(prot_sdb == NULL); + if (prot_sdb == NULL) { + /* + * This can happen if someone (e.g. multipath) + * queues a command to a device on an adapter + * that does not support DIX. + */ + WARN_ON_ONCE(1); + error = BLKPREP_KILL; + goto err_exit; + } + ivecs = blk_rq_count_integrity_sg(rq->q, rq->bio); if (scsi_alloc_sgtable(prot_sdb, ivecs, is_mq)) { |