[SCSI] qla2xxx: Resolve a performance issue in interrupt

[net-next-2.6.git] / drivers / scsi / qla2xxx / qla_isr.c

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index c8d0a176fea4a1287853716a7dd1d6f20c910060..245e7afb4c4dcf897c54029f8a3940408a2a4fbe 100644 (file)
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -37,6 +37,7 @@ qla2100_intr_handler(int irq, void *dev_id)
        uint16_t        hccr;
        uint16_t        mb[4];
        struct rsp_que *rsp;
+       unsigned long   flags;
 
        rsp = (struct rsp_que *) dev_id;
        if (!rsp) {
@@ -49,7 +50,7 @@ qla2100_intr_handler(int irq, void *dev_id)
        reg = &ha->iobase->isp;
        status = 0;
 
-       spin_lock(&ha->hardware_lock);
+       spin_lock_irqsave(&ha->hardware_lock, flags);
        vha = pci_get_drvdata(ha->pdev);
        for (iter = 50; iter--; ) {
                hccr = RD_REG_WORD(&reg->hccr);
@@ -101,7 +102,7 @@ qla2100_intr_handler(int irq, void *dev_id)
                        RD_REG_WORD(&reg->hccr);
                }
        }
-       spin_unlock(&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) {
@@ -133,6 +134,7 @@ qla2300_intr_handler(int irq, void *dev_id)
        uint16_t        mb[4];
        struct rsp_que *rsp;
        struct qla_hw_data *ha;
+       unsigned long   flags;
 
        rsp = (struct rsp_que *) dev_id;
        if (!rsp) {
@@ -145,7 +147,7 @@ qla2300_intr_handler(int irq, void *dev_id)
        reg = &ha->iobase->isp;
        status = 0;
 
-       spin_lock(&ha->hardware_lock);
+       spin_lock_irqsave(&ha->hardware_lock, flags);
        vha = pci_get_drvdata(ha->pdev);
        for (iter = 50; iter--; ) {
                stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
@@ -216,7 +218,7 @@ qla2300_intr_handler(int irq, void *dev_id)
                WRT_REG_WORD(&reg->hccr, HCCR_CLR_RISC_INT);
                RD_REG_WORD_RELAXED(&reg->hccr);
        }
-       spin_unlock(&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) {
@@ -1626,6 +1628,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
        uint32_t        hccr;
        uint16_t        mb[4];
        struct rsp_que *rsp;
+       unsigned long   flags;
 
        rsp = (struct rsp_que *) dev_id;
        if (!rsp) {
@@ -1638,7 +1641,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
        reg = &ha->iobase->isp24;
        status = 0;
 
-       spin_lock(&ha->hardware_lock);
+       spin_lock_irqsave(&ha->hardware_lock, flags);
        vha = pci_get_drvdata(ha->pdev);
        for (iter = 50; iter--; ) {
                stat = RD_REG_DWORD(&reg->host_status);
@@ -1688,7 +1691,7 @@ qla24xx_intr_handler(int irq, void *dev_id)
                WRT_REG_DWORD(&reg->hccr, HCCRX_CLR_RISC_INT);
                RD_REG_DWORD_RELAXED(&reg->hccr);
        }
-       spin_unlock(&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) {