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Re: [PATCH 1/4] base: soc: Early register bus when needed

From Arnd Bergmann <arnd@arndb.de>
Newsgroups linux.kernel
Subject Re: [PATCH 1/4] base: soc: Early register bus when needed
Date 2016-10-10 16:20 +0200
Message-ID <sqJAS-2hV-31@gated-at.bofh.it> (permalink)
References <sotTA-Ep-17@gated-at.bofh.it> <sou3f-Iv-13@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Tuesday, October 4, 2016 11:09:24 AM CEST Geert Uytterhoeven wrote:
> If soc_device_register() is called before soc_bus_register(), it crashes
> with a NULL pointer dereference.
> 
> soc_bus_register() is already a core_initcall(), but drivers/base/ is
> entered later than e.g. drivers/pinctrl/ and drivers/soc/. Hence there
> are several subsystems that may need to know SoC revision information,
> while it's not so easy to initialize the SoC bus even earlier using an
> initcall.
> 
> To fix this, let soc_device_register() register the bus early if that
> hasn't happened yet.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
> 

Not nice, but I can't think of a better alternative, so

Acked-by: Arnd Bergmann <arnd@arndb.de>

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Thread

[PATCH 0/4] soc: renesas: Identify SoC and register with the SoC bus Geert Uytterhoeven <geert+renesas@glider.be> - 2016-10-04 11:20 +0200
  [PATCH 1/4] base: soc: Early register bus when needed Geert Uytterhoeven <geert+renesas@glider.be> - 2016-10-04 11:20 +0200
    Re: [PATCH 1/4] base: soc: Early register bus when needed Arnd Bergmann <arnd@arndb.de> - 2016-10-10 16:20 +0200
  [PATCH 3/4] base: soc: Check for NULL SoC device attributes Geert Uytterhoeven <geert+renesas@glider.be> - 2016-10-04 11:20 +0200
    Re: [PATCH 3/4] base: soc: Check for NULL SoC device attributes Arnd Bergmann <arnd@arndb.de> - 2016-10-10 16:20 +0200
  Re: [PATCH 0/4] soc: renesas: Identify SoC and register with the SoC bus Arnd Bergmann <arnd@arndb.de> - 2016-10-10 16:30 +0200

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