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SubjectRe: [PATCH v2 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware
Date
On Jun 09 2018, Michael Schmitz <schmitzmic@gmail.com> wrote:

> Hi Finn,
>
> Am 08.06.2018 um 14:24 schrieb Finn Thain:
>> Don't load the via-pmu68k driver on early PowerBooks. The M50753 PMU
>> device found in those models was never supported by this driver.
>> Attempting to load the driver usually causes a boot hang.
>>
>> Cc: Geert Uytterhoeven <geert@linux-m68k.org>
>> Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
>> ---
>> arch/m68k/mac/misc.c | 6 ++----
>> drivers/macintosh/via-pmu68k.c | 4 ----
>> include/uapi/linux/pmu.h | 1 -
>> 3 files changed, 2 insertions(+), 9 deletions(-)
> ...
>> diff --git a/include/uapi/linux/pmu.h b/include/uapi/linux/pmu.h
>> index 89cb1acea93a..30f64d46f5db 100644
>> --- a/include/uapi/linux/pmu.h
>> +++ b/include/uapi/linux/pmu.h
>> @@ -93,7 +93,6 @@ enum {
>> PMU_HEATHROW_BASED, /* PowerBook G3 series */
>> PMU_PADDINGTON_BASED, /* 1999 PowerBook G3 */
>> PMU_KEYLARGO_BASED, /* Core99 motherboard (PMU99) */
>> - PMU_68K_V1, /* 68K PMU, version 1 */
>> PMU_68K_V2, /* 68K PMU, version 2 */
>> };
>
> Is this enum used by any user space code? If so, perhaps rather leave the
> PMU_68K_V1 in there to avoid upsetting that?

It also changes the value of PMU_68K_V2, which is an ABI break.

Andreas.

--
Andreas Schwab, schwab@linux-m68k.org
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