On Wed, May 9, 2018 at 3:04 AM, Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx> wrote:
Loading a NuBus driver module on a non-NuBus machine triggers the
BUG_ON(!drv->bus->p) in driver_register(), because bus_register() was
not called, because it is conditional on MACH_IS_MAC.
Fix the crash by calling bus_register() unconditionally. Call it from
a postcore_initcall(), like other busses do.
Hence, the bus type is available for device_register(), which happens
in a subsys initcall, and for driver_register(), which happens in a
device or module initcall.
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reported-by: Michael Schmitz <schmitzmic@xxxxxxxxx>
Tested-by: Stan Johnson <userm57@xxxxxxxxx>
Fixes: 7f86c765a6a2 ("nubus: Add support for the driver model")
Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
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
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