linux-kernel - [PATCH 0/3] gpio: Failure path fixes

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Message-Id: <20190328131349.18838-1-geert+renesas@glider.be>
Date:   Thu, 28 Mar 2019 14:13:46 +0100
From:   Geert Uytterhoeven <geert+renesas@...der.be>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:     Benoit Parrot <bparrot@...com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>
Subject: [PATCH 0/3] gpio: Failure path fixes

	Hi Linus, Bartosz,

After making a silly mistake in a pin control driver, pinctrl driver
initialization failed, causing an avalanche of GPIO driver failures, and
I was greeted by the following scary messages:

    OF: ERROR: Bad of_node_put() on /soc/gpio@...50000
    ...
    WARNING: CPU: 0 PID: 1 at lib/refcount.c:156 kobject_get+0x38/0x4c
    ...
    WARNING: CPU: 0 PID: 1 at lib/refcount.c:190 refcount_sub_and_test_checked+0x3c/0xa8

The first two patches fix bugs in related error paths, after which the
messages are gone.
The third patch is a drive-by fix for function comment.

Thanks for your comments!

Geert Uytterhoeven (3):
  gpio: of: Fix of_gpiochip_add() error path
  gpio: Fix gpiochip_add_data_with_key() error path
  gpio: Remove obsolete comment about gpiochip_free_hogs() usage

 drivers/gpio/gpiolib-of.c |  8 +++++++-
 drivers/gpio/gpiolib.c    | 14 ++++++++------
 2 files changed, 15 insertions(+), 7 deletions(-)

-- 
2.17.1

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds