linux-kernel - Re: [PATCH v2 1/2] spi: mark device nodes only in case of successful instantiation

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Date:   Mon, 17 Oct 2016 16:15:24 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Ralf Ramsauer <ralf@...ses-pyramidenbau.de>
Cc:     Mark Brown <broonie@...nel.org>, Wolfram Sang <wsa@...-dreams.de>,
        Linux SPI <linux-spi@...r.kernel.org>,
        Linux I2C <linux-i2c@...r.kernel.org>,
        "linux-kernel @ vger . kernel . org" <linux-kernel@...r.kernel.org>,
        Pantelis Antoniou <pantelis.antoniou@...sulko.com>
Subject: Re: [PATCH v2 1/2] spi: mark device nodes only in case of successful instantiation

On Mon, Oct 17, 2016 at 3:59 PM, Ralf Ramsauer
<ralf@...ses-pyramidenbau.de> wrote:
> Instantiated SPI device nodes are marked with OF_POPULATE. This was
> introduced in bd6c164. On unloading, loaded device nodes will of course
> be unmarked. The problem are nodes that fail during initialisation: If a
> node fails, it won't be unloaded and hence not be unmarked.
>
> If a SPI driver module is unloaded and reloaded, it will skip nodes that
> failed before.
>
> Skip device nodes that are already populated and mark them only in case
> of success.
>
> Note that the same issue exists for I2C.
>
> Fixes: bd6c164 ("spi: Mark instantiated device nodes with OF_POPULATE")
> Signed-off-by: Ralf Ramsauer <ralf@...ses-pyramidenbau.de>

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

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