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authorDavid S. Miller <davem@davemloft.net>2010-02-17 07:09:29 +0100
committerDavid S. Miller <davem@davemloft.net>2010-02-17 07:09:29 +0100
commit2bb4646fce8d09916b351d1a62f98db7cec6fc41 (patch)
treec1f0d002e69868606eca9d1b919835f422892063 /drivers/scsi/qla2xxx/qla_isr.c
parentxfrm: avoid spinlock in get_acqseq() used by xfrm user (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6 (diff)
downloadlinux-2bb4646fce8d09916b351d1a62f98db7cec6fc41.tar.xz
linux-2bb4646fce8d09916b351d1a62f98db7cec6fc41.zip
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'drivers/scsi/qla2xxx/qla_isr.c')
-rw-r--r--drivers/scsi/qla2xxx/qla_isr.c44
1 files changed, 10 insertions, 34 deletions
diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index ffd0efdff40e..6fc63b98818c 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -1917,6 +1917,7 @@ qla24xx_msix_rsp_q(int irq, void *dev_id)
struct rsp_que *rsp;
struct device_reg_24xx __iomem *reg;
struct scsi_qla_host *vha;
+ unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
@@ -1927,15 +1928,15 @@ qla24xx_msix_rsp_q(int irq, void *dev_id)
ha = rsp->hw;
reg = &ha->iobase->isp24;
- spin_lock_irq(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
- vha = qla25xx_get_host(rsp);
+ vha = pci_get_drvdata(ha->pdev);
qla24xx_process_response_queue(vha, rsp);
if (!ha->flags.disable_msix_handshake) {
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
RD_REG_DWORD_RELAXED(&reg->hccr);
}
- spin_unlock_irq(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
return IRQ_HANDLED;
}
@@ -1946,6 +1947,7 @@ qla25xx_msix_rsp_q(int irq, void *dev_id)
struct qla_hw_data *ha;
struct rsp_que *rsp;
struct device_reg_24xx __iomem *reg;
+ unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
@@ -1958,10 +1960,10 @@ qla25xx_msix_rsp_q(int irq, void *dev_id)
/* Clear the interrupt, if enabled, for this response queue */
if (rsp->options & ~BIT_6) {
reg = &ha->iobase->isp24;
- spin_lock_irq(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
RD_REG_DWORD_RELAXED(&reg->hccr);
- spin_unlock_irq(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
queue_work_on((int) (rsp->id - 1), ha->wq, &rsp->q_work);
@@ -1979,6 +1981,7 @@ qla24xx_msix_default(int irq, void *dev_id)
uint32_t stat;
uint32_t hccr;
uint16_t mb[4];
+ unsigned long flags;
rsp = (struct rsp_que *) dev_id;
if (!rsp) {
@@ -1990,7 +1993,7 @@ qla24xx_msix_default(int irq, void *dev_id)
reg = &ha->iobase->isp24;
status = 0;
- spin_lock_irq(&ha->hardware_lock);
+ spin_lock_irqsave(&ha->hardware_lock, flags);
vha = pci_get_drvdata(ha->pdev);
do {
stat = RD_REG_DWORD(&reg->host_status);
@@ -2039,7 +2042,7 @@ qla24xx_msix_default(int irq, void *dev_id)
}
WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
} while (0);
- spin_unlock_irq(&ha->hardware_lock);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (test_bit(MBX_INTR_WAIT, &ha->mbx_cmd_flags) &&
(status & MBX_INTERRUPT) && ha->flags.mbox_int) {
@@ -2277,30 +2280,3 @@ int qla25xx_request_irq(struct rsp_que *rsp)
msix->rsp = rsp;
return ret;
}
-
-struct scsi_qla_host *
-qla25xx_get_host(struct rsp_que *rsp)
-{
- srb_t *sp;
- struct qla_hw_data *ha = rsp->hw;
- struct scsi_qla_host *vha = NULL;
- struct sts_entry_24xx *pkt;
- struct req_que *req;
- uint16_t que;
- uint32_t handle;
-
- pkt = (struct sts_entry_24xx *) rsp->ring_ptr;
- que = MSW(pkt->handle);
- handle = (uint32_t) LSW(pkt->handle);
- req = ha->req_q_map[que];
- if (handle < MAX_OUTSTANDING_COMMANDS) {
- sp = req->outstanding_cmds[handle];
- if (sp)
- return sp->fcport->vha;
- else
- goto base_que;
- }
-base_que:
- vha = pci_get_drvdata(ha->pdev);
- return vha;
-}