Merge branch 'linus' into sched/urgent

1 files changed, 32 insertions, 0 deletions

diff --git a/arch/arm/mach-clps7500/include/mach/irq.h b/arch/arm/mach-clps7500/include/mach/irq.h
new file mode 100644
index 00000000000..e8da3c58df7
--- /dev/null
+++ b/arch/arm/mach-clps7500/include/mach/irq.h
@@ -0,0 +1,32 @@
+/*
+ * arch/arm/mach-clps7500/include/mach/irq.h
+ *
+ * Copyright (C) 1996 Russell King
+ * Copyright (C) 1999, 2001 Nexus Electronics Ltd.
+ *
+ * Changelog:
+ *   10-10-1996	RMK	Brought up to date with arch-sa110eval
+ *   22-08-1998	RMK	Restructured IRQ routines
+ *   11-08-1999	PJB	Created ARM7500 version, derived from RiscPC code
+ */
+
+#include <asm/hardware/iomd.h>
+#include <asm/io.h>
+
+static inline int fixup_irq(unsigned int irq)
+{
+	if (irq == IRQ_ISA) {
+		int isabits = *((volatile unsigned int *)0xe002b700);
+		if (isabits == 0) {
+			printk("Spurious ISA IRQ!\n");
+			return irq;
+		}
+		irq = IRQ_ISA_BASE;
+		while (!(isabits & 1)) {
+			irq++;
+			isabits >>= 1;
+		}
+	}
+
+	return irq;
+}