[SCSI] aacraid: driver shutdown method

Add in pci shutdown method so that the adapter shuts down correctly and
flushes its cache. Shutdown should also disable the adapter's interrupt
when shutdown (in particularly if the driver is rmmod'd) to prevent
spurious hardware activities.

Signed-off-by: Mark Haverkamp <markh@osdl.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/drivers/scsi/aacraid/rkt.c b/drivers/scsi/aacraid/rkt.c
index 7d68b7825137..557287a0b80b 100644
--- a/drivers/scsi/aacraid/rkt.c
+++ b/drivers/scsi/aacraid/rkt.c
@@ -88,6 +88,16 @@ static irqreturn_t aac_rkt_intr(int irq, void *dev_id, struct pt_regs *regs)
 }
 
 /**
+ *      aac_rkt_disable_interrupt       -       Disable interrupts
+ *      @dev: Adapter
+ */
+
+static void aac_rkt_disable_interrupt(struct aac_dev *dev)
+{
+        rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
+}
+
+/**
  *      rkt_sync_cmd    -       send a command and wait
  *      @dev: Adapter
  *      @command: Command to execute
@@ -412,10 +422,19 @@ int aac_rkt_init(struct aac_dev *dev)
          *      Fill in the function dispatch table.
          */
         dev->a_ops.adapter_interrupt = aac_rkt_interrupt_adapter;
+        dev->a_ops.adapter_disable_int = aac_rkt_disable_interrupt;
         dev->a_ops.adapter_notify = aac_rkt_notify_adapter;
         dev->a_ops.adapter_sync_cmd = rkt_sync_cmd;
         dev->a_ops.adapter_check_health = aac_rkt_check_health;
 
+        /*
+         *      First clear out all interrupts.  Then enable the one's that we
+         *      can handle.
+         */
+        rkt_writeb(dev, MUnit.OIMR, 0xff);
+        rkt_writel(dev, MUnit.ODR, 0xffffffff);
+        rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xfb);
+
         if (aac_init_adapter(dev) == NULL)
                 goto error_irq;
         /*
@@ -438,6 +457,7 @@ error_kfree:
         kfree(dev->queues);
 
 error_irq:
+        rkt_writeb(dev, MUnit.OIMR, dev->OIMR = 0xff);
         free_irq(dev->scsi_host_ptr->irq, (void *)dev);
 
 error_iounmap: