path: root/drivers/s390/scsi
diff options
authorSteffen Maier <maier@linux.ibm.com>2018-12-06 17:31:21 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2018-12-07 22:04:25 -0500
commit7171455354eb2ed494ddb6fe50988e98bb5cfa96 (patch)
treee9589f9e339abc580729a44ac92b2753c32498f1 /drivers/s390/scsi
parentscsi: zfcp: fix posting too many status read buffers leading to adapter shutdown (diff)
scsi: zfcp: improve kdoc for return of zfcp_status_read_refill()
Complements v2.6.35 commit 64deb6efdc55 ("[SCSI] zfcp: Use status_read_buf_num provided by FCP channel") which replaced the hardcoded 16 with a variable value Also complements already existing fixups for above commit v2.6.35 commit 8d88cf3f3b9a ("[SCSI] zfcp: Update status read mempool") v3.10 commit 9edf7d75ee5f ("[SCSI] zfcp: status read buffers on first adapter open with link down") Signed-off-by: Steffen Maier <maier@linux.ibm.com> Reviewed-by: Jens Remus <jremus@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/s390/scsi')
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 882789fff574..9cf30d124b9e 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -264,10 +264,10 @@ static void zfcp_free_low_mem_buffers(struct zfcp_adapter *adapter)
* zfcp_status_read_refill - refill the long running status_read_requests
* @adapter: ptr to struct zfcp_adapter for which the buffers should be refilled
- * Returns: 0 on success, 1 otherwise
- *
- * if there are 16 or more status_read requests missing an adapter_reopen
- * is triggered
+ * Return:
+ * * 0 on success meaning at least one status read is pending
+ * * 1 if posting failed and not a single status read buffer is pending,
+ * also triggers adapter reopen recovery
int zfcp_status_read_refill(struct zfcp_adapter *adapter)