diff options
Diffstat (limited to 'drivers/scsi/scsi_scan.c')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 111 |
1 files changed, 67 insertions, 44 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index ca99be7341..ffd7e7e729 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -332,7 +332,7 @@ static struct scsi_device *scsi_alloc_sdev(struct scsi_target *starget, sdev->sg_reserved_size = INT_MAX; - q = blk_mq_init_queue(&sdev->host->tag_set); + q = blk_mq_alloc_queue(&sdev->host->tag_set, NULL, NULL); if (IS_ERR(q)) { /* release fn is set up in scsi_sysfs_device_initialise, so * have to free and put manually here */ @@ -412,7 +412,7 @@ static void scsi_target_dev_release(struct device *dev) put_device(parent); } -static struct device_type scsi_target_type = { +static const struct device_type scsi_target_type = { .name = "scsi_target", .release = scsi_target_dev_release, }; @@ -626,6 +626,7 @@ void scsi_sanitize_inquiry_string(unsigned char *s, int len) } EXPORT_SYMBOL(scsi_sanitize_inquiry_string); + /** * scsi_probe_lun - probe a single LUN using a SCSI INQUIRY * @sdev: scsi_device to probe @@ -647,10 +648,36 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, int first_inquiry_len, try_inquiry_len, next_inquiry_len; int response_len = 0; int pass, count, result, resid; - struct scsi_sense_hdr sshdr; + struct scsi_failure failure_defs[] = { + /* + * not-ready to ready transition [asc/ascq=0x28/0x0] or + * power-on, reset [asc/ascq=0x29/0x0], continue. INQUIRY + * should not yield UNIT_ATTENTION but many buggy devices do + * so anyway. + */ + { + .sense = UNIT_ATTENTION, + .asc = 0x28, + .result = SAM_STAT_CHECK_CONDITION, + }, + { + .sense = UNIT_ATTENTION, + .asc = 0x29, + .result = SAM_STAT_CHECK_CONDITION, + }, + { + .allowed = 1, + .result = DID_TIME_OUT << 16, + }, + {} + }; + struct scsi_failures failures = { + .total_allowed = 3, + .failure_definitions = failure_defs, + }; const struct scsi_exec_args exec_args = { - .sshdr = &sshdr, .resid = &resid, + .failures = &failures, }; *bflags = 0; @@ -668,6 +695,8 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, pass, try_inquiry_len)); /* Each pass gets up to three chances to ignore Unit Attention */ + scsi_failures_reset_retries(&failures); + for (count = 0; count < 3; ++count) { memset(scsi_cmd, 0, 6); scsi_cmd[0] = INQUIRY; @@ -684,22 +713,7 @@ static int scsi_probe_lun(struct scsi_device *sdev, unsigned char *inq_result, "scsi scan: INQUIRY %s with code 0x%x\n", result ? "failed" : "successful", result)); - if (result > 0) { - /* - * not-ready to ready transition [asc/ascq=0x28/0x0] - * or power-on, reset [asc/ascq=0x29/0x0], continue. - * INQUIRY should not yield UNIT_ATTENTION - * but many buggy devices do so anyway. - */ - if (scsi_status_is_check_condition(result) && - scsi_sense_valid(&sshdr)) { - if ((sshdr.sense_key == UNIT_ATTENTION) && - ((sshdr.asc == 0x28) || - (sshdr.asc == 0x29)) && - (sshdr.ascq == 0)) - continue; - } - } else if (result == 0) { + if (result == 0) { /* * if nothing was transferred, we try * again. It's a workaround for some USB @@ -1402,14 +1416,34 @@ static int scsi_report_lun_scan(struct scsi_target *starget, blist_flags_t bflag unsigned int length; u64 lun; unsigned int num_luns; - unsigned int retries; int result; struct scsi_lun *lunp, *lun_data; - struct scsi_sense_hdr sshdr; struct scsi_device *sdev; struct Scsi_Host *shost = dev_to_shost(&starget->dev); + struct scsi_failure failure_defs[] = { + { + .sense = UNIT_ATTENTION, + .asc = SCMD_FAILURE_ASC_ANY, + .ascq = SCMD_FAILURE_ASCQ_ANY, + .result = SAM_STAT_CHECK_CONDITION, + }, + /* Fail all CCs except the UA above */ + { + .sense = SCMD_FAILURE_SENSE_ANY, + .result = SAM_STAT_CHECK_CONDITION, + }, + /* Retry any other errors not listed above */ + { + .result = SCMD_FAILURE_RESULT_ANY, + }, + {} + }; + struct scsi_failures failures = { + .total_allowed = 3, + .failure_definitions = failure_defs, + }; const struct scsi_exec_args exec_args = { - .sshdr = &sshdr, + .failures = &failures, }; int ret = 0; @@ -1480,29 +1514,18 @@ retry: * should come through as a check condition, and will not generate * a retry. */ - for (retries = 0; retries < 3; retries++) { - SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev, - "scsi scan: Sending REPORT LUNS to (try %d)\n", - retries)); - - result = scsi_execute_cmd(sdev, scsi_cmd, REQ_OP_DRV_IN, - lun_data, length, - SCSI_REPORT_LUNS_TIMEOUT, 3, - &exec_args); + scsi_failures_reset_retries(&failures); - SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev, - "scsi scan: REPORT LUNS" - " %s (try %d) result 0x%x\n", - result ? "failed" : "successful", - retries, result)); - if (result == 0) - break; - else if (scsi_sense_valid(&sshdr)) { - if (sshdr.sense_key != UNIT_ATTENTION) - break; - } - } + SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev, + "scsi scan: Sending REPORT LUNS\n")); + result = scsi_execute_cmd(sdev, scsi_cmd, REQ_OP_DRV_IN, lun_data, + length, SCSI_REPORT_LUNS_TIMEOUT, 3, + &exec_args); + + SCSI_LOG_SCAN_BUS(3, sdev_printk (KERN_INFO, sdev, + "scsi scan: REPORT LUNS %s result 0x%x\n", + result ? "failed" : "successful", result)); if (result) { /* * The device probably does not support a REPORT LUN command |