Home Home > GIT Browse
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorhimanshu.madhani@cavium.com <himanshu.madhani@cavium.com>2017-12-04 14:45:16 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-03-15 10:57:00 +0100
commit085bac793f1c2b1b772931cfe19b52d91c9bc066 (patch)
treedd4de02c73787e3f081ddfb0dbb2b1669a25a590
parent0e7a62c3cfb67cc5717e09ea950b92ef9c3e4041 (diff)
scsi: qla2xxx: Fix memory leak in dual/target mode
commit 7867b98dceb7741065c9c1b645136facad5c2e93 upstream. When driver is loaded in Target/Dual mode, it creates QPair to support MQ and allocates resources for each QPair. This Qpair initialization is delayed until the FW personality is changed to Dual/Target mode by issuing chip reset. At the time of chip reset firmware is re-initilized in correct personality all the QPairs are initialized by sending MBC_INITIALIZE_MULTIQ (001Fh). This patch fixes memory leak by adding check to issue MBC_INITIALIZE_MULTIQ command only while deleting rsp/req queue when the flag is set for initiator mode, and clean up QPair resources correctly during the driver unload. This MBX does not need to be issued for Target/Dual mode because chip reset will reset ISP. Fixes: d65237c7f0860 ("scsi: qla2xxx: Fix mailbox failure while deleting Queue pairs") Cc: <stable@vger.kernel.org> # 4.10+ Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/scsi/qla2xxx/qla_init.c4
-rw-r--r--drivers/scsi/qla2xxx/qla_mid.c18
2 files changed, 11 insertions, 11 deletions
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index 4ff13a1e6805..6082389f25c3 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -8221,9 +8221,6 @@ int qla2xxx_delete_qpair(struct scsi_qla_host *vha, struct qla_qpair *qpair)
int ret = QLA_FUNCTION_FAILED;
struct qla_hw_data *ha = qpair->hw;
- if (!vha->flags.qpairs_req_created && !vha->flags.qpairs_rsp_created)
- goto fail;
-
qpair->delete_in_progress = 1;
while (atomic_read(&qpair->ref_count))
msleep(500);
@@ -8231,6 +8228,7 @@ int qla2xxx_delete_qpair(struct scsi_qla_host *vha, struct qla_qpair *qpair)
ret = qla25xx_delete_req_que(vha, qpair->req);
if (ret != QLA_SUCCESS)
goto fail;
+
ret = qla25xx_delete_rsp_que(vha, qpair->rsp);
if (ret != QLA_SUCCESS)
goto fail;
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 618ca272d01a..e538e6308885 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -575,14 +575,15 @@ qla25xx_free_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
int
qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
{
- int ret = -1;
+ int ret = QLA_SUCCESS;
- if (req) {
+ if (req && vha->flags.qpairs_req_created) {
req->options |= BIT_0;
ret = qla25xx_init_req_que(vha, req);
+ if (ret != QLA_SUCCESS)
+ return QLA_FUNCTION_FAILED;
}
- if (ret == QLA_SUCCESS)
- qla25xx_free_req_que(vha, req);
+ qla25xx_free_req_que(vha, req);
return ret;
}
@@ -590,14 +591,15 @@ qla25xx_delete_req_que(struct scsi_qla_host *vha, struct req_que *req)
int
qla25xx_delete_rsp_que(struct scsi_qla_host *vha, struct rsp_que *rsp)
{
- int ret = -1;
+ int ret = QLA_SUCCESS;
- if (rsp) {
+ if (rsp && vha->flags.qpairs_rsp_created) {
rsp->options |= BIT_0;
ret = qla25xx_init_rsp_que(vha, rsp);
+ if (ret != QLA_SUCCESS)
+ return QLA_FUNCTION_FAILED;
}
- if (ret == QLA_SUCCESS)
- qla25xx_free_rsp_que(vha, rsp);
+ qla25xx_free_rsp_que(vha, rsp);
return ret;
}