Sysace: Move IRQ handler registration to occur after FSM is initialized

The FSM needs to be initialized before it is safe to call the ISR

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

diff --git a/drivers/block/xsysace.c b/drivers/block/xsysace.c
index 10bb4e5..296d567 100644 (file)
--- a/drivers/block/xsysace.c
+++ b/drivers/block/xsysace.c
@@ -949,15 +949,6 @@ static int __devinit ace_setup(struct ace_device *ace)
        if (!ace->baseaddr)
                goto err_ioremap;
 
-       if (ace->irq != NO_IRQ) {
-               rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
-               if (rc) {
-                       /* Failure - fall back to polled mode */
-                       dev_err(ace->dev, "request_irq failed\n");
-                       ace->irq = NO_IRQ;
-               }
-       }
-
        /*
         * Initialize the state machine tasklet and stall timer
         */
@@ -1015,6 +1006,16 @@ static int __devinit ace_setup(struct ace_device *ace)
        val |= ACE_CTRL_DATABUFRDYIRQ | ACE_CTRL_ERRORIRQ;
        ace_out(ace, ACE_CTRL, val);
 
+       /* Now we can hook up the irq handler */
+       if (ace->irq != NO_IRQ) {
+               rc = request_irq(ace->irq, ace_interrupt, 0, "systemace", ace);
+               if (rc) {
+                       /* Failure - fall back to polled mode */
+                       dev_err(ace->dev, "request_irq failed\n");
+                       ace->irq = NO_IRQ;
+               }
+       }
+
        /* Print the identification */
        dev_info(ace->dev, "Xilinx SystemACE revision %i.%i.%i\n",
                 (version >> 12) & 0xf, (version >> 8) & 0x0f, version & 0xff);
@@ -1035,8 +1036,6 @@ static int __devinit ace_setup(struct ace_device *ace)
        blk_cleanup_queue(ace->queue);
       err_blk_initq:
        iounmap(ace->baseaddr);
-       if (ace->irq != NO_IRQ)
-               free_irq(ace->irq, ace);
       err_ioremap:
        dev_info(ace->dev, "xsysace: error initializing device at 0x%lx\n",
               ace->physaddr);