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[PATCH][MIPS] fix LASAT IRQ overlap

To: Ralf Baechle <ralf@linux-mips.org>
Subject: [PATCH][MIPS] fix LASAT IRQ overlap
From: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Date: Fri, 9 Nov 2007 18:42:35 +0900
Cc: yoichi_yuasa@tripeaks.co.jp, linux-mips <linux-mips@linux-mips.org>
Organization: TriPeaks Corporation
Original-recipient: rfc822;linux-mips@linux-mips.org
Sender: linux-mips-bounce@linux-mips.org
The range of MIPS_CPU IRQ and the range of LASAT IRQ overlap.
This patch has fixed it.

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>

diff -pruN -X mips/Documentation/dontdiff mips-orig/arch/mips/lasat/interrupt.c 
mips/arch/mips/lasat/interrupt.c
--- mips-orig/arch/mips/lasat/interrupt.c       2007-11-09 07:54:54.572826750 
+0900
+++ mips/arch/mips/lasat/interrupt.c    2007-11-09 08:15:06.752835750 +0900
@@ -19,17 +19,14 @@
  * Lasat boards.
  */
 #include <linux/init.h>
-#include <linux/irq.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
 #include <linux/interrupt.h>
-#include <linux/kernel_stat.h>
+#include <linux/irq.h>
 
 #include <asm/bootinfo.h>
 #include <asm/irq_cpu.h>
 #include <asm/lasat/lasatint.h>
-#include <asm/time.h>
-#include <asm/gdb-stub.h>
+
+#include <irq.h>
 
 static volatile int *lasat_int_status;
 static volatile int *lasat_int_mask;
@@ -97,12 +94,18 @@ asmlinkage void plat_irq_dispatch(void)
 
        /* if int_status == 0, then the interrupt has already been cleared */
        if (int_status) {
-               irq = LASATINT_BASE + ls1bit32(int_status);
+               irq = LASAT_IRQ_BASE + ls1bit32(int_status);
 
                do_IRQ(irq);
        }
 }
 
+static struct irqaction cascade = {
+       .handler        = no_action,
+       .mask           = CPU_MASK_NONE,
+       .name           = "cascade",
+};
+
 void __init arch_init_irq(void)
 {
        int i;
@@ -127,6 +130,9 @@ void __init arch_init_irq(void)
        }
 
        mips_cpu_irq_init();
-       for (i = LASATINT_BASE; i <= LASATINT_END; i++)
+
+       for (i = LASAT_IRQ_BASE; i <= LASAT_IRQ_END; i++)
                set_irq_chip_and_handler(i, &lasat_irq_type, handle_level_irq);
+
+       setup_irq(LASAT_CASCADE_IRQ, &cascade);
 }
diff -pruN -X mips/Documentation/dontdiff mips-orig/arch/mips/pci/pci-lasat.c 
mips/arch/mips/pci/pci-lasat.c
--- mips-orig/arch/mips/pci/pci-lasat.c 2007-11-09 07:54:55.596890750 +0900
+++ mips/arch/mips/pci/pci-lasat.c      2007-11-09 08:33:30.421810750 +0900
@@ -5,12 +5,14 @@
  *
  * Copyright (C) 2000, 2001, 04 Keith M Wesolowski
  */
-#include <linux/kernel.h>
 #include <linux/init.h>
+#include <linux/kernel.h>
 #include <linux/pci.h>
 #include <linux/types.h>
+
 #include <asm/bootinfo.h>
-#include <asm/lasat/lasatint.h>
+
+#include <irq.h>
 
 extern struct pci_ops nile4_pci_ops;
 extern struct pci_ops gt64xxx_pci0_ops;
@@ -55,15 +57,15 @@ static int __init lasat_pci_setup(void)
 
 arch_initcall(lasat_pci_setup);
 
-#define LASATINT_ETH1   (LASATINT_BASE + 0)
-#define LASATINT_ETH0   (LASATINT_BASE + 1)
-#define LASATINT_HDC    (LASATINT_BASE + 2)
-#define LASATINT_COMP   (LASATINT_BASE + 3)
-#define LASATINT_HDLC   (LASATINT_BASE + 4)
-#define LASATINT_PCIA   (LASATINT_BASE + 5)
-#define LASATINT_PCIB   (LASATINT_BASE + 6)
-#define LASATINT_PCIC   (LASATINT_BASE + 7)
-#define LASATINT_PCID   (LASATINT_BASE + 8)
+#define LASAT_IRQ_ETH1   (LASAT_IRQ_BASE + 0)
+#define LASAT_IRQ_ETH0   (LASAT_IRQ_BASE + 1)
+#define LASAT_IRQ_HDC    (LASAT_IRQ_BASE + 2)
+#define LASAT_IRQ_COMP   (LASAT_IRQ_BASE + 3)
+#define LASAT_IRQ_HDLC   (LASAT_IRQ_BASE + 4)
+#define LASAT_IRQ_PCIA   (LASAT_IRQ_BASE + 5)
+#define LASAT_IRQ_PCIB   (LASAT_IRQ_BASE + 6)
+#define LASAT_IRQ_PCIC   (LASAT_IRQ_BASE + 7)
+#define LASAT_IRQ_PCID   (LASAT_IRQ_BASE + 8)
 
 int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 {
@@ -71,13 +73,13 @@ int __init pcibios_map_irq(const struct 
        case 1:
        case 2:
        case 3:
-               return LASATINT_PCIA + (((slot-1) + (pin-1)) % 4);
+               return LASAT_IRQ_PCIA + (((slot-1) + (pin-1)) % 4);
        case 4:
-               return LASATINT_ETH1;   /* Ethernet 1 (LAN 2) */
+               return LASAT_IRQ_ETH1;   /* Ethernet 1 (LAN 2) */
        case 5:
-               return LASATINT_ETH0;   /* Ethernet 0 (LAN 1) */
+               return LASAT_IRQ_ETH0;   /* Ethernet 0 (LAN 1) */
        case 6:
-               return LASATINT_HDC;    /* IDE controller */
+               return LASAT_IRQ_HDC;    /* IDE controller */
        default:
                return 0xff;            /* Illegal */
        }
diff -pruN -X mips/Documentation/dontdiff 
mips-orig/include/asm-mips/lasat/lasatint.h 
mips/include/asm-mips/lasat/lasatint.h
--- mips-orig/include/asm-mips/lasat/lasatint.h 2007-11-09 07:57:42.283308000 
+0900
+++ mips/include/asm-mips/lasat/lasatint.h      2007-11-09 08:04:47.862157500 
+0900
@@ -1,11 +1,6 @@
 #ifndef __ASM_LASAT_LASATINT_H
 #define __ASM_LASAT_LASATINT_H
 
-#include <linux/irq.h>
-
-#define LASATINT_BASE  MIPS_CPU_IRQ_BASE
-#define LASATINT_END   (LASATINT_BASE + 16)
-
 /* lasat 100 */
 #define LASAT_INT_STATUS_REG_100       (KSEG1ADDR(0x1c880000))
 #define LASAT_INT_MASK_REG_100         (KSEG1ADDR(0x1c890000))
diff -pruN -X mips/Documentation/dontdiff 
mips-orig/include/asm-mips/mach-lasat/irq.h 
mips/include/asm-mips/mach-lasat/irq.h
--- mips-orig/include/asm-mips/mach-lasat/irq.h 1970-01-01 09:00:00.000000000 
+0900
+++ mips/include/asm-mips/mach-lasat/irq.h      2007-11-09 08:13:55.012352250 
+0900
@@ -0,0 +1,13 @@
+#ifndef _ASM_MACH_LASAT_IRQ_H
+#define _ASM_MACH_LASAT_IRQ_H
+
+#define LASAT_CASCADE_IRQ      (MIPS_CPU_IRQ_BASE + 0)
+
+#define LASAT_IRQ_BASE         8
+#define LASAT_IRQ_END          23
+
+#define NR_IRQS                        24
+
+#include_next <irq.h>
+
+#endif /* _ASM_MACH_LASAT_IRQ_H */

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