[SCSI] qla2xxx: Correct locking during NVRAM manipulation.

Commit 2c96d8d0c17978bbf5eb82314d488f46d4a51280 pushed the
acquisition of hardware_lock to too fine a level, which in turn
will cause problems with cond_resched()s added with
40a2e34a94c336b716f631b2952d233e1ba76e3c.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/scsi/qla2xxx/qla_sup.c

@@ -869,11 +869,9 @@ qla24xx_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
 	uint32_t i;
 	uint32_t *dwptr;
 	struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
-	unsigned long flags;
 
 	ret = QLA_SUCCESS;
 
-	spin_lock_irqsave(&ha->hardware_lock, flags);
 	/* Enable flash write. */
 	WRT_REG_DWORD(&reg->ctrl_status,
 	    RD_REG_DWORD(&reg->ctrl_status) | CSRX_FLASH_ENABLE);
@@ -907,7 +905,6 @@ qla24xx_write_nvram_data(scsi_qla_host_t *ha, uint8_t *buf, uint32_t naddr,
 	WRT_REG_DWORD(&reg->ctrl_status,
 	    RD_REG_DWORD(&reg->ctrl_status) & ~CSRX_FLASH_ENABLE);
 	RD_REG_DWORD(&reg->ctrl_status);	/* PCI Posting. */
-	spin_unlock_irqrestore(&ha->hardware_lock, flags);
 
 	return ret;
 }