折腾了半个月的错误

只看该作者 · 2015-12-11 09:52

------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-40
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b95c>] (xiongwae+0x5c/0x9c)
[<c001b95c>] (xiongwae+0x5c/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1a8 ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-72
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b964>] (xiongwae+0x64/0x9c)
[<c001b964>] (xiongwae+0x64/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1a9 ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-104
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b96c>] (xiongwae+0x6c/0x9c)
[<c001b96c>] (xiongwae+0x6c/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1aa ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-136
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b978>] (xiongwae+0x78/0x9c)
[<c001b978>] (xiongwae+0x78/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1ab ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-41
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b95c>] (xiongwae+0x5c/0x9c)
[<c001b95c>] (xiongwae+0x5c/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1ac ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-73
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b964>] (xiongwae+0x64/0x9c)
[<c001b964>] (xiongwae+0x64/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1ad ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-105
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b96c>] (xiongwae+0x6c/0x9c)
[<c001b96c>] (xiongwae+0x6c/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1ae ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-137
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b978>] (xiongwae+0x78/0x9c)
[<c001b978>] (xiongwae+0x78/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1af ]---
------------[ cut here ]------------
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
autorequest GPIO-42
Modules linked in:
[<c00387e4>] (unwind_backtrace+0x0/0xec) from [<c0043dc8>] (warn_slowpath_common+0x4c/0x64)
[<c0043dc8>] (warn_slowpath_common+0x4c/0x64) from [<c0043e74>] (warn_slowpath_fmt+0x30/0x40)
[<c0043e74>] (warn_slowpath_fmt+0x30/0x40) from [<c01927c4>] (gpio_ensure_requested+0x54/0xd4)
[<c01927c4>] (gpio_ensure_requested+0x54/0xd4) from [<c01929ac>] (gpio_direction_input+0x70/0xe8)
[<c01929ac>] (gpio_direction_input+0x70/0xe8) from [<c001b95c>] (xiongwae+0x5c/0x9c)
[<c001b95c>] (xiongwae+0x5c/0x9c) from [<c002d414>] (do_one_initcall+0x90/0x164)
[<c002d414>] (do_one_initcall+0x90/0x164) from [<c0008694>] (kernel_init+0x88/0x130)
[<c0008694>] (kernel_init+0x88/0x130) from [<c003463c>] (kernel_thread_exit+0x0/0x8)
---[ end trace 223e18a2434dc1b0 ]---

只看该作者 · 2015-12-11 09:56

板子是ATM-9x25 我是自己做的板子然后移植现在是移植后出现了错误我现在很苦恼这个问题半岁了我很长时间我现在都不知道怎么去完成他有人说是GPIO的问题里面的驱动我也不会所以请各位大神帮帮我小弟感激不尽

1万 · 2015-12-11 10:22

没遇到过。楼主放在原来的开发板上跑跑看

只看该作者 · 2015-12-11 16:48

阿南发表于 2015-12-11 10:22
没遇到过。楼主放在原来的开发板上跑跑看

原来的开发板上面可以跑完全没问题:'(的，这个是我自己做的板子，就是不知道哪里需要改动

只看该作者 · 2015-12-12 15:58

越來越缺乏爱心的21ic,
首先保证bsp完全一致, 还是原来开发板可跑, 自制的开发板有问题, 不用说是硬件问题, 慢慢查
查drivers/gpio/gpiolib.c:99 gpio_ensure_requested函数, 看看有什么问题,
驱动没你想象中那么复杂, 比应用程序简单多了,

只看该作者 · 2015-12-15 08:52

WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
很明显告诉你了，是gpio的问题.......
你有没有request？......

只看该作者 · 2015-12-17 08:29

mini1986 发表于 2015-12-15 08:52
WARNING: at drivers/gpio/gpiolib.c:99 gpio_ensure_requested+0x54/0xd4()
很明显告诉你了，是gpio的问题 ...

我把这个函数发给你看看static int gpio_ensure_requested(struct gpio_desc *desc, unsigned offset)
{
      const struct gpio_chip *chip = desc->chip;
      const int gpio = chip->base + offset;

      if (WARN(test_and_set_bit(FLAG_REQUESTED, &desc->flags) == 0,
                     "autorequest GPIO-%d\n", gpio)) {
            if (!try_module_get(chip->owner)) {
                     pr_err("GPIO-%d: module can't be gotten \n", gpio);
                     clear_bit(FLAG_REQUESTED, &desc->flags);
                     /* lose */
                     return -EIO;
            }
            desc_set_label(desc, "[auto]");
  /* caller must chip->request() w/o spinlock */
            if (chip->request)
                     return 1;
      }
      return 0;
}

/* caller holds gpio_lock *OR* gpio is marked as requested */
static inline struct gpio_chip *gpio_to_chip(unsigned gpio)
{
      return gpio_desc[gpio].chip;
}

只看该作者 · 2015-12-17 09:14

wanli945 发表于 2015-12-17 08:29
我把这个函数发给你看看static int gpio_ensure_requested(struct gpio_desc *desc, unsigned offset)
{
...

这个警告是告诉你，你使用的这些个gpio之前并没有进行申请，你好好看看你写的源代码，跟linux内核中的代码没有关系......

折腾了半个月的错误

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