powerpc/mpc85xx: Update interrupt handling for IFC controller

IFC may have one or two interrupts.  If two interrupt specifiers are
present, the first is the "common" interrupt (CM_EVTER_STAT), and the
second is the NAND interrupt (NAND_EVTER_STAT).  If there is only one, that
interrupt reports both types of event.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 8 insertions, 12 deletions

diff --git a/arch/powerpc/sysdev/fsl_ifc.c b/arch/powerpc/sysdev/fsl_ifc.c
index b31f19f61031..097cc9d2585b 100644
--- a/arch/powerpc/sysdev/fsl_ifc.c
+++ b/arch/powerpc/sysdev/fsl_ifc.c
@@ -244,12 +244,6 @@ static int __devinit fsl_ifc_ctrl_probe(struct platform_device *dev)
         /* get the nand machine irq */
         fsl_ifc_ctrl_dev->nand_irq =
                         irq_of_parse_and_map(dev->dev.of_node, 1);
-        if (fsl_ifc_ctrl_dev->nand_irq == NO_IRQ) {
-                dev_err(&dev->dev, "failed to get irq resource "
-                                                "for NAND Machine\n");
-                ret = -ENODEV;
-                goto err;
-        }
 
         fsl_ifc_ctrl_dev->dev = &dev->dev;
 
@@ -267,12 +261,14 @@ static int __devinit fsl_ifc_ctrl_probe(struct platform_device *dev)
                 goto err_irq;
         }
 
-        ret = request_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_nand_irq, 0,
-                          "fsl-ifc-nand", fsl_ifc_ctrl_dev);
-        if (ret != 0) {
-                dev_err(&dev->dev, "failed to install irq (%d)\n",
-                        fsl_ifc_ctrl_dev->nand_irq);
-                goto err_nandirq;
+        if (fsl_ifc_ctrl_dev->nand_irq) {
+                ret = request_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_nand_irq,
+                                0, "fsl-ifc-nand", fsl_ifc_ctrl_dev);
+                if (ret != 0) {
+                        dev_err(&dev->dev, "failed to install irq (%d)\n",
+                                fsl_ifc_ctrl_dev->nand_irq);
+                        goto err_nandirq;
+                }
         }
 
         return 0;