target/linux/ar71xx/patches-3.3/112-MIPS-ath79-fix-a-wrong-IRQ-number.patch

   1 From cfb725275ea25857e8f0e3bf358fff7c84cc787c Mon Sep 17 00:00:00 2001
   2 From: Gabor Juhos <juhosg@openwrt.org>
   3 Date: Tue, 22 Nov 2011 13:59:39 +0100
   4 Subject: [PATCH 12/35] MIPS: ath79: fix a wrong IRQ number
   5
   6 The Ubiquiti XM board setup code uses an invalid
   7 IRQ number, because it if above of NR_IRQS. This
   8 leads to failed 'request_irq' calls:
   9
  10   ath9k 0000:00:00.0: request_irq failed
  11   ath9k: probe of 0000:00:00.0 failed with error -22
  12
  13 Preserve some IRQ numbers for the built-in IRQ
  14 controller of PCI host controllers in the
  15 AR71XX/AR724X SoCs, and use the correct IRQ
  16 number in the board setup code.
  17
  18 Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
  19
  20 v2: - no changes
  21
  22 The IRQ controller code is also missing, that will be
  23 added in a separate patch.
  24 ---
  25  arch/mips/ath79/mach-ubnt-xm.c         |    5 +++--
  26  arch/mips/include/asm/mach-ath79/irq.h |    6 +++++-
  27  2 files changed, 8 insertions(+), 3 deletions(-)
  28
  29 --- a/arch/mips/ath79/mach-ubnt-xm.c
  30 +++ b/arch/mips/ath79/mach-ubnt-xm.c
  31 @@ -17,6 +17,8 @@
  32  #include <linux/ath9k_platform.h>
  33  #endif /* CONFIG_PCI */
  34
  35 +#include <asm/mach-ath79/irq.h>
  36 +
  37  #include "machtypes.h"
  38  #include "dev-gpio-buttons.h"
  39  #include "dev-leds-gpio.h"
  40 @@ -33,7 +35,6 @@
  41  #define UBNT_XM_KEYS_POLL_INTERVAL     20
  42  #define UBNT_XM_KEYS_DEBOUNCE_INTERVAL (3 * UBNT_XM_KEYS_POLL_INTERVAL)
  43
  44 -#define UBNT_XM_PCI_IRQ                        48
  45  #define UBNT_XM_EEPROM_ADDR            (u8 *) KSEG1ADDR(0x1fff1000)
  46
  47  static struct gpio_led ubnt_xm_leds_gpio[] __initdata = {
  48 @@ -86,7 +87,7 @@ static struct ath9k_platform_data ubnt_x
  49
  50  static struct ar724x_pci_data ubnt_xm_pci_data[] = {
  51         {
  52 -               .irq    = UBNT_XM_PCI_IRQ,
  53 +               .irq    = ATH79_PCI_IRQ(0),
  54                 .pdata  = &ubnt_xm_eeprom_data,
  55         },
  56  };
  57 --- a/arch/mips/include/asm/mach-ath79/irq.h
  58 +++ b/arch/mips/include/asm/mach-ath79/irq.h
  59 @@ -10,11 +10,15 @@
  60  #define __ASM_MACH_ATH79_IRQ_H
  61
  62  #define MIPS_CPU_IRQ_BASE      0
  63 -#define NR_IRQS                        40
  64 +#define NR_IRQS                        46
  65
  66  #define ATH79_MISC_IRQ_BASE    8
  67  #define ATH79_MISC_IRQ_COUNT   32
  68
  69 +#define ATH79_PCI_IRQ_BASE     (ATH79_MISC_IRQ_BASE + ATH79_MISC_IRQ_COUNT)
  70 +#define ATH79_PCI_IRQ_COUNT    6
  71 +#define ATH79_PCI_IRQ(_x)      (ATH79_PCI_IRQ_BASE + (_x))
  72 +
  73  #define ATH79_CPU_IRQ_IP2      (MIPS_CPU_IRQ_BASE + 2)
  74  #define ATH79_CPU_IRQ_USB      (MIPS_CPU_IRQ_BASE + 3)
  75  #define ATH79_CPU_IRQ_GE0      (MIPS_CPU_IRQ_BASE + 4)