base: soc: Early register bus when needed

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

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This commit is contained in:

Geert Uytterhoeven 2016-09-27 17:10:29 +02:00

parent 1001354ca3

commit 1da1b3628d

1 changed files with 9 additions and 0 deletions

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drivers/base/soc.c

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