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Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning

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2016-09-20 13:30 GMT+02:00 Geert Uytterhoeven <geert@linux-m68k.org>:
> On Tue, Sep 20, 2016 at 12:48 PM, Peter Rosin <peda@axentia.se> wrote:
>> On 2016-09-20 12:07, Bartosz Golaszewski wrote:
>>> I feel like it's just wrong to set an arbitrary limit on the number of
>>> i2c branches - and this is what the result of this approach would be.
>>
>> What arbitrary limit would that be? The number of lockdep classes
>> can't be *that* limited? Or?
>>
>> I mean one lockdep class per root adapter and one subclass within that
>> class per mux level doesn't sound too bad. How many root adapters do
>> we need to design for?
>
> 'git grep -c i2c@ -- "*dts*"' told me exynos7 has 12 i2c interfaces.
> And as long as I have gpios (pcf8574?), I can add more using i2c-gpio.
> Hence the upper limit is infinity.
>

Agreed. If you add to that dynamic i2c adapters like hid-cp2112 or
greybus-i2c then it makes infinity plus some more.

Best regards,
Bartosz Golaszewski

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[PATCH v2 0/4] gpio: fix an incorrect lockdep warning Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-16 18:10 +0200
  [PATCH v2 3/4] i2c: add a warning to i2c_adapter_depth() Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-16 18:10 +0200
  Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Wolfram Sang <wsa@the-dreams.de> - 2016-09-16 19:30 +0200
    Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Wolfram Sang <wsa@the-dreams.de> - 2016-09-16 20:00 +0200
      Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-18 21:50 +0200
        Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Peter Zijlstra <peterz@infradead.org> - 2016-09-19 10:20 +0200
          Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Peter Zijlstra <peterz@infradead.org> - 2016-09-19 11:10 +0200
            Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-20 12:10 +0200
              Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Peter Zijlstra <peterz@infradead.org> - 2016-09-20 12:30 +0200
              Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Geert Uytterhoeven <geert@linux-m68k.org> - 2016-09-20 13:40 +0200
                Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-20 14:40 +0200
            Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Thomas Gleixner <tglx@linutronix.de> - 2016-09-20 17:40 +0200
      Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-18 21:50 +0200
  Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Peter Zijlstra <peterz@infradead.org> - 2016-09-17 03:30 +0200
    Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Wolfram Sang <wsa@the-dreams.de> - 2016-09-17 12:20 +0200
      Re: [PATCH v2 0/4] gpio: fix an incorrect lockdep warning Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-17 21:10 +0200

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