scsi: pm80xx: Fix missing tag_free in NVMD DATA req

Tag was not freed in NVMD get/set data request failure scenario. This
caused a tag leak each time a request failed.

Link: https://lore.kernel.org/r/20210109123849.17098-5-Viswas.G@microchip.com
Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: akshatzen <akshatzen@google.com>
Signed-off-by: Viswas G <Viswas.G@microchip.com>
Signed-off-by: Ruksar Devadi <Ruksar.devadi@microchip.com>
Signed-off-by: Radha Ramachandran <radha@google.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/pm8001/pm8001_hwi.c b/drivers/scsi/pm8001/pm8001_hwi.c
index f147193..4bc1153 100644 (file)
--- a/drivers/scsi/pm8001/pm8001_hwi.c
+++ b/drivers/scsi/pm8001/pm8001_hwi.c
@@ -3038,8 +3038,8 @@ void pm8001_mpi_set_nvmd_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
        complete(pm8001_ha->nvmd_completion);
        pm8001_dbg(pm8001_ha, MSG, "Set nvm data complete!\n");
        if ((dlen_status & NVMD_STAT) != 0) {
-               pm8001_dbg(pm8001_ha, FAIL, "Set nvm data error!\n");
-               return;
+               pm8001_dbg(pm8001_ha, FAIL, "Set nvm data error %x\n",
+                               dlen_status);
        }
        ccb->task = NULL;
        ccb->ccb_tag = 0xFFFFFFFF;
@@ -3062,11 +3062,17 @@ pm8001_mpi_get_nvmd_resp(struct pm8001_hba_info *pm8001_ha, void *piomb)
 
        pm8001_dbg(pm8001_ha, MSG, "Get nvm data complete!\n");
        if ((dlen_status & NVMD_STAT) != 0) {
-               pm8001_dbg(pm8001_ha, FAIL, "Get nvm data error!\n");
+               pm8001_dbg(pm8001_ha, FAIL, "Get nvm data error %x\n",
+                               dlen_status);
                complete(pm8001_ha->nvmd_completion);
+               /* We should free tag during failure also, the tag is not being
+                * freed by requesting path anywhere.
+                */
+               ccb->task = NULL;
+               ccb->ccb_tag = 0xFFFFFFFF;
+               pm8001_tag_free(pm8001_ha, tag);
                return;
        }
-
        if (ir_tds_bn_dps_das_nvm & IPMode) {
                /* indirect mode - IR bit set */
                pm8001_dbg(pm8001_ha, MSG, "Get NVMD success, IR=1\n");