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>
diff --git a/arch/powerpc/sysdev/fsl_ifc.c b/arch/powerpc/sysdev/fsl_ifc.c
index b31f19f..097cc9d2 100644
--- a/arch/powerpc/sysdev/fsl_ifc.c
+++ b/arch/powerpc/sysdev/fsl_ifc.c
@@ -244,12 +244,6 @@
/* 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 @@
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;