Re: lockdep: incorrect deadlock warning with two GPIO expanders

From	Bartosz Golaszewski <bgolaszewski@baylibre.com>
Newsgroups	linux.kernel
Subject	Re: lockdep: incorrect deadlock warning with two GPIO expanders
Date	2016-09-16 16:30 +0200
Message-ID	<si2jp-5SZ-57@gated-at.bofh.it> (permalink)
References	(2 earlier) <sgBbz-50s-3@gated-at.bofh.it> <sgBuW-58A-37@gated-at.bofh.it> <sgV0B-1M6-19@gated-at.bofh.it> <shzKp-4a4-17@gated-at.bofh.it> <shEh4-75Z-29@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

2016-09-15 14:41 GMT+02:00 Linus Walleij <linus.walleij@linaro.org>:
>
> Oh clever. Of course.
>
> Bartosz can you try out this approach?
>
> Yours,
> Linus Walleij

Hi Linus,

I submitted a patch reusing a routine already present in i2c.h that
allows to test if an i2c adapter's parent is also an i2c adapter,
which is the case for adapters behind a multiplexer.

Also Cc'ed linux-i2c and Wolfram Sang to let him take a look if the
API is used correctly.

Best regards,
Bartosz Golaszewski

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-12 14:00 +0200
  Re: lockdep: incorrect deadlock warning with two GPIO expanders Peter Zijlstra <peterz@infradead.org> - 2016-09-12 14:10 +0200
    Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-12 17:20 +0200
      Re: lockdep: incorrect deadlock warning with two GPIO expanders Peter Zijlstra <peterz@infradead.org> - 2016-09-12 17:40 +0200
        Re: lockdep: incorrect deadlock warning with two GPIO expanders Linus Walleij <linus.walleij@linaro.org> - 2016-09-13 14:30 +0200
          Re: lockdep: incorrect deadlock warning with two GPIO expanders Peter Zijlstra <peterz@infradead.org> - 2016-09-15 10:00 +0200
            Re: lockdep: incorrect deadlock warning with two GPIO expanders Linus Walleij <linus.walleij@linaro.org> - 2016-09-15 14:50 +0200
              Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-15 15:30 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Peter Zijlstra <peterz@infradead.org> - 2016-09-15 15:40 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-15 16:20 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Peter Zijlstra <peterz@infradead.org> - 2016-09-15 16:40 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-15 17:30 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Peter Zijlstra <peterz@infradead.org> - 2016-09-16 13:00 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-16 13:20 +0200
                Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-16 14:10 +0200
              Re: lockdep: incorrect deadlock warning with two GPIO expanders Bartosz Golaszewski <bgolaszewski@baylibre.com> - 2016-09-16 16:30 +0200

csiph-web