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Commit 8af50dcd authored by Christoph Hellwig's avatar Christoph Hellwig Committed by James Bottomley
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[SCSI] qla1280: interupt posting for irq disabling/enabling 



Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarThiemo Seufer <ths@linux-mips.org>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent a6c42741

drivers/scsi/qla1280.c

+20 −37
Original line number Diff line number Diff line
@@ -1266,6 +1266,22 @@ qla1280_biosparam_old(Disk * disk, kdev_t dev, int geom[]) 
}

#endif

 

/* disable risc and host interrupts */

static inline void

qla1280_disable_intrs(struct scsi_qla_host *ha)

{

	WRT_REG_WORD(&ha->iobase->ictrl, 0);

	RD_REG_WORD(&ha->iobase->ictrl);	/* PCI Posted Write flush */

}



/* enable risc and host interrupts */

static inline void

qla1280_enable_intrs(struct scsi_qla_host *ha)

{

	WRT_REG_WORD(&ha->iobase->ictrl, (ISP_EN_INT | ISP_EN_RISC));

	RD_REG_WORD(&ha->iobase->ictrl);	/* PCI Posted Write flush */

}



/**************************************************************************

 * qla1280_intr_handler

 *   Handles the H/W interrupt
@@ -1286,7 +1302,7 @@ qla1280_intr_handler(int irq, void *dev_id, struct pt_regs *regs) 
	ha->isr_count++;

	reg = ha->iobase;



	WRT_REG_WORD(&reg->ictrl, 0);	/* disable our interrupt. */

	qla1280_disable_intrs(ha);



	data = qla1280_debounce_register(&reg->istatus);

	/* Check for pending interrupts. */
@@ -1299,8 +1315,7 @@ qla1280_intr_handler(int irq, void *dev_id, struct pt_regs *regs) 


	spin_unlock(HOST_LOCK);



	/* enable our interrupt. */

	WRT_REG_WORD(&reg->ictrl, (ISP_EN_INT | ISP_EN_RISC));

	qla1280_enable_intrs(ha);



	LEAVE_INTR("qla1280_intr_handler");

	return IRQ_RETVAL(handled);
@@ -1613,38 +1628,6 @@ qla1280_return_status(struct response * sts, struct scsi_cmnd *cp) 
/*                QLogic ISP1280 Hardware Support Functions.                */

/****************************************************************************/



 /*

  * qla2100_enable_intrs

  * qla2100_disable_intrs

  *

  * Input:

  *      ha = adapter block pointer.

  *

  * Returns:

  *      None

  */

static inline void

qla1280_enable_intrs(struct scsi_qla_host *ha)

{

	struct device_reg __iomem *reg;



	reg = ha->iobase;

	/* enable risc and host interrupts */

	WRT_REG_WORD(&reg->ictrl, (ISP_EN_INT | ISP_EN_RISC));

	RD_REG_WORD(&reg->ictrl);	/* PCI Posted Write flush */

}



static inline void

qla1280_disable_intrs(struct scsi_qla_host *ha)

{

	struct device_reg __iomem *reg;



	reg = ha->iobase;

	/* disable risc and host interrupts */

	WRT_REG_WORD(&reg->ictrl, 0);

	RD_REG_WORD(&reg->ictrl);	/* PCI Posted Write flush */

}



/*

 * qla1280_initialize_adapter

 *      Initialize board.
@@ -4751,7 +4734,7 @@ qla1280_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) 


#if LINUX_VERSION_CODE >= 0x020600

 error_disable_adapter:

	WRT_REG_WORD(&ha->iobase->ictrl, 0);

	qla1280_disable_intrs(ha);

#endif

 error_free_irq:

	free_irq(pdev->irq, ha);
@@ -4788,7 +4771,7 @@ qla1280_remove_one(struct pci_dev *pdev) 
	scsi_remove_host(host);

#endif



	WRT_REG_WORD(&ha->iobase->ictrl, 0);

	qla1280_disable_intrs(ha);



	free_irq(pdev->irq, ha);