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| author | Jayamohan Kallickal <jayamohank@gmail.com> | 2013-09-28 15:35:42 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2013-10-25 09:58:05 +0100 |
| commit | 8f09a3b97804924bf7787161e4ad5c273d12b11e (patch) | |
| tree | 11f63a2ea14d44ac4395962f1630b5fd5857c303 /drivers/scsi/be2iscsi | |
| parent | 7331613ec0cd1847a67eb268a7b9675f79388350 (diff) | |
| download | linux-8f09a3b97804924bf7787161e4ad5c273d12b11e.tar.gz linux-8f09a3b97804924bf7787161e4ad5c273d12b11e.tar.bz2 linux-8f09a3b97804924bf7787161e4ad5c273d12b11e.zip | |
[SCSI] be2iscsi: Fix locking mechanism in Unsol Path
The default pdu is a common resource and needs to be protected
while manipulating it.
Signed-off-by: Minh Tran <minhduc.tran@emulex.com>
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/be2iscsi')
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.c | 7 | ||||
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.h | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 5ba575f0051b..991858262b72 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -2072,8 +2072,10 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq) "BM_%d : Received %s[%d] on CID : %d\n", cqe_desc[code], code, cid); + spin_lock_bh(&phba->async_pdu_lock); hwi_process_default_pdu_ring(beiscsi_conn, phba, (struct i_t_dpdu_cqe *)sol); + spin_unlock_bh(&phba->async_pdu_lock); break; case UNSOL_DATA_NOTIFY: beiscsi_log(phba, KERN_INFO, @@ -2081,8 +2083,10 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq) "BM_%d : Received %s[%d] on CID : %d\n", cqe_desc[code], code, cid); + spin_lock_bh(&phba->async_pdu_lock); hwi_process_default_pdu_ring(beiscsi_conn, phba, (struct i_t_dpdu_cqe *)sol); + spin_unlock_bh(&phba->async_pdu_lock); break; case CXN_INVALIDATE_INDEX_NOTIFY: case CMD_INVALIDATED_NOTIFY: @@ -2110,8 +2114,10 @@ static unsigned int beiscsi_process_cq(struct be_eq_obj *pbe_eq) BEISCSI_LOG_IO | BEISCSI_LOG_CONFIG, "BM_%d : Dropping %s[%d] on DPDU ring on CID : %d\n", cqe_desc[code], code, cid); + spin_lock_bh(&phba->async_pdu_lock); hwi_flush_default_pdu_buffer(phba, beiscsi_conn, (struct i_t_dpdu_cqe *) sol); + spin_unlock_bh(&phba->async_pdu_lock); break; case CXN_KILLED_PDU_SIZE_EXCEEDS_DSL: case CXN_KILLED_BURST_LEN_MISMATCH: @@ -5010,6 +5016,7 @@ static int beiscsi_dev_probe(struct pci_dev *pcidev, spin_lock_init(&phba->io_sgl_lock); spin_lock_init(&phba->mgmt_sgl_lock); spin_lock_init(&phba->isr_lock); + spin_lock_init(&phba->async_pdu_lock); ret = mgmt_get_fw_config(&phba->ctrl, phba); if (ret != 0) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, diff --git a/drivers/scsi/be2iscsi/be_main.h b/drivers/scsi/be2iscsi/be_main.h index ec75c53de7b6..6ac4f2f5bbaa 100644 --- a/drivers/scsi/be2iscsi/be_main.h +++ b/drivers/scsi/be2iscsi/be_main.h @@ -305,6 +305,7 @@ struct beiscsi_hba { spinlock_t io_sgl_lock; spinlock_t mgmt_sgl_lock; spinlock_t isr_lock; + spinlock_t async_pdu_lock; unsigned int age; unsigned short avlbl_cids; unsigned short cid_alloc; |