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authorAnirban Chakraborty <anirban.chakraborty@qlogic.com>2010-02-04 17:17:59 -0500
committerJames Bottomley <James.Bottomley@suse.de>2010-02-08 14:45:55 -0500
commita67093d46e3caed1a42d694a7de452b61db30562 (patch)
tree092ef591331f99807fee2fb67bdc7efc2dfb2cc7 /drivers/scsi
parent84eb8fb42c120ff32b201c1cdd910033c888f699 (diff)
[SCSI] qla2xxx: Obtain proper host structure during response-queue processing.
Original code incorrectly assumed only status-type-0 IOCBs would be queued to the response-queue, and thus all entries would safely reference a VHA from the IOCB 'handle.' Cc: stable@kernel.org Signed-off-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/qla2xxx/qla_gbl.h1
-rw-r--r--drivers/scsi/qla2xxx/qla_isr.c29
-rw-r--r--drivers/scsi/qla2xxx/qla_mid.c8
3 files changed, 6 insertions, 32 deletions
diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
index f61fb8d01330..8bc6f53691e9 100644
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -453,6 +453,5 @@ extern void qla24xx_wrt_req_reg(struct qla_hw_data *, uint16_t, uint16_t);
453extern void qla25xx_wrt_req_reg(struct qla_hw_data *, uint16_t, uint16_t); 453extern void qla25xx_wrt_req_reg(struct qla_hw_data *, uint16_t, uint16_t);
454extern void qla25xx_wrt_rsp_reg(struct qla_hw_data *, uint16_t, uint16_t); 454extern void qla25xx_wrt_rsp_reg(struct qla_hw_data *, uint16_t, uint16_t);
455extern void qla24xx_wrt_rsp_reg(struct qla_hw_data *, uint16_t, uint16_t); 455extern void qla24xx_wrt_rsp_reg(struct qla_hw_data *, uint16_t, uint16_t);
456extern struct scsi_qla_host * qla25xx_get_host(struct rsp_que *);
457 456
458#endif /* _QLA_GBL_H */ 457#endif /* _QLA_GBL_H */
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index 0ced91c5ebd3..6fc63b98818c 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1930,7 +1930,7 @@ qla24xx_msix_rsp_q(int irq, void *dev_id)
1930 1930
1931 spin_lock_irqsave(&ha->hardware_lock, flags); 1931 spin_lock_irqsave(&ha->hardware_lock, flags);
1932 1932
1933 vha = qla25xx_get_host(rsp); 1933 vha = pci_get_drvdata(ha->pdev);
1934 qla24xx_process_response_queue(vha, rsp); 1934 qla24xx_process_response_queue(vha, rsp);
1935 if (!ha->flags.disable_msix_handshake) { 1935 if (!ha->flags.disable_msix_handshake) {
1936 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT); 1936 WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
@@ -2280,30 +2280,3 @@ int qla25xx_request_irq(struct rsp_que *rsp)
2280 msix->rsp = rsp; 2280 msix->rsp = rsp;
2281 return ret; 2281 return ret;
2282} 2282}
2283
2284struct scsi_qla_host *
2285qla25xx_get_host(struct rsp_que *rsp)
2286{
2287 srb_t *sp;
2288 struct qla_hw_data *ha = rsp->hw;
2289 struct scsi_qla_host *vha = NULL;
2290 struct sts_entry_24xx *pkt;
2291 struct req_que *req;
2292 uint16_t que;
2293 uint32_t handle;
2294
2295 pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
2296 que = MSW(pkt->handle);
2297 handle = (uint32_t) LSW(pkt->handle);
2298 req = ha->req_q_map[que];
2299 if (handle < MAX_OUTSTANDING_COMMANDS) {
2300 sp = req->outstanding_cmds[handle];
2301 if (sp)
2302 return sp->fcport->vha;
2303 else
2304 goto base_que;
2305 }
2306base_que:
2307 vha = pci_get_drvdata(ha->pdev);
2308 return vha;
2309}
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index b901aa267e7d..ff17dee28613 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -636,13 +636,15 @@ failed:
636 636
637static void qla_do_work(struct work_struct *work) 637static void qla_do_work(struct work_struct *work)
638{ 638{
639 unsigned long flags;
639 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work); 640 struct rsp_que *rsp = container_of(work, struct rsp_que, q_work);
640 struct scsi_qla_host *vha; 641 struct scsi_qla_host *vha;
642 struct qla_hw_data *ha = rsp->hw;
641 643
642 spin_lock_irq(&rsp->hw->hardware_lock); 644 spin_lock_irqsave(&rsp->hw->hardware_lock, flags);
643 vha = qla25xx_get_host(rsp); 645 vha = pci_get_drvdata(ha->pdev);
644 qla24xx_process_response_queue(vha, rsp); 646 qla24xx_process_response_queue(vha, rsp);
645 spin_unlock_irq(&rsp->hw->hardware_lock); 647 spin_unlock_irqrestore(&rsp->hw->hardware_lock, flags);
646} 648}
647 649
648/* create response queue */ 650/* create response queue */