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scsi: qla2xxx: Correct error handling during initialization failures 

Current code misses or fails to account for proper recovery during early
initialization failures:

 - Properly unwind allocations during probe() failures.

 - Protect against non-initialization memory allocations during
   unwinding.

 - Propagate error status during HW initialization.

 - Release SCSI host reference when memory allocations fail.

Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Andrew Vasquez 2019-07-26 09:07:35 -07:00 committed by Martin K. Petersen
parent f0cecc1eec
commit 26a7779919
2 changed files with 13 additions and 3 deletions
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4
drivers/scsi/qla2xxx/qla_init.c
View File

@ -2293,6 +2293,10 @@ qla2x00_initialize_adapter(scsi_qla_host_t *vha)
if (qla_ini_mode_enabled(vha) || qla_dual_mode_enabled(vha))
rval = qla2x00_init_rings(vha);
/* No point in continuing if firmware initialization failed. */
if (rval != QLA_SUCCESS)
return rval;
ha->flags.chip_reset_done = 1;
if (rval == QLA_SUCCESS && IS_QLA84XX(ha)) {

12
drivers/scsi/qla2xxx/qla_os.c
View File

@ -1809,8 +1809,13 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
int que;
struct qla_hw_data *ha = vha->hw;
/* Continue only if initialization complete. */
if (!ha->base_qpair)
return;
__qla2x00_abort_all_cmds(ha->base_qpair, res);
if (!ha->queue_pair_map)
return;
for (que = 0; que < ha->max_qpairs; que++) {
if (!ha->queue_pair_map[que])
continue;
@ -3163,6 +3168,7 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
ql_log(ql_log_fatal, base_vha, 0x003d,
"Failed to allocate memory for queue pointers..."
"aborting.\n");
ret = -ENODEV;
goto probe_failed;
}
@ -4717,7 +4723,7 @@ qla2x00_mem_free(struct qla_hw_data *ha)
mempool_destroy(ha->ctx_mempool);
ha->ctx_mempool = NULL;
if (ql2xenabledif) {
if (ql2xenabledif && ha->dif_bundl_pool) {
struct dsd_dma *dsd, *nxt;
list_for_each_entry_safe(dsd, nxt, &ha->pool.unusable.head,
@ -4812,7 +4818,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
if (!vha->gnl.l) {
ql_log(ql_log_fatal, vha, 0xd04a,
"Alloc failed for name list.\n");
scsi_remove_host(vha->host);
scsi_host_put(vha->host);
return NULL;
}
@ -4824,7 +4830,7 @@ struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
"Alloc failed for scan database.\n");
dma_free_coherent(&ha->pdev->dev, vha->gnl.size,
vha->gnl.l, vha->gnl.ldma);
scsi_remove_host(vha->host);
scsi_host_put(vha->host);
return NULL;
}
INIT_DELAYED_WORK(&vha->scan.scan_work, qla_scan_work_fn);