From: Andreas Schwab <schwab@linux-m68k.org>
To: Michael Schmitz <schmitzmic@gmail.com>
Cc: Finn Thain <fthain@telegraphics.com.au>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
linuxppc-dev@lists.ozlabs.org, linux-m68k@lists.linux-m68k.org,
linux-kernel@vger.kernel.org,
Geert Uytterhoeven <geert@linux-m68k.org>
Subject: Re: [PATCH v2 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware
Date: Sat, 09 Jun 2018 09:14:27 +0200 [thread overview]
Message-ID: <m2h8mc4ejw.fsf@linux-m68k.org> (raw)
In-Reply-To: <9f015684-4d91-70e4-d2a4-89fe167ff8ab@gmail.com> (Michael Schmitz's message of "Sat, 9 Jun 2018 18:42:25 +1200")
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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"And now for something completely different."
next prev parent reply other threads:[~2018-06-09 7:14 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-08 2:24 [PATCH v2 00/12] macintosh: Resolve various PMU driver problems Finn Thain
2018-06-08 2:24 ` [PATCH v2 02/12] macintosh/via-pmu: Add missing mmio accessors Finn Thain
2018-06-08 2:24 ` [PATCH v2 01/12] macintosh/via-pmu: Fix section mismatch warning Finn Thain
2018-06-08 2:24 ` [PATCH v2 03/12] macintosh/via-pmu: Don't clear shift register interrupt flag twice Finn Thain
2018-06-08 2:24 ` [PATCH v2 07/12] macintosh/via-pmu: Make CONFIG_PPC_PMAC Kconfig deps explicit Finn Thain
2018-06-08 2:24 ` [PATCH v2 10/12] macintosh: Use common code to access RTC Finn Thain
2018-06-08 2:24 ` [PATCH v2 08/12] macintosh/via-pmu68k: Don't load driver on unsupported hardware Finn Thain
2018-06-09 6:42 ` Michael Schmitz
2018-06-09 7:14 ` Andreas Schwab [this message]
2018-06-09 7:55 ` Michael Schmitz
2018-06-09 12:21 ` Finn Thain
2018-06-09 13:24 ` Andreas Schwab
2018-06-10 2:11 ` Finn Thain
2018-06-10 6:55 ` Benjamin Herrenschmidt
2018-06-11 23:47 ` Finn Thain
2018-06-12 6:53 ` Laurent Vivier
2018-06-12 20:12 ` Michael Schmitz
2018-06-10 8:29 ` Geert Uytterhoeven
2018-06-10 9:12 ` Michael Schmitz
2018-06-11 0:05 ` Benjamin Herrenschmidt
2018-06-11 1:45 ` Michael Schmitz
2018-06-08 2:24 ` [PATCH v2 05/12] macintosh/via-pmu: Replace via pointer with via1 and via2 pointers Finn Thain
2018-06-08 2:24 ` [PATCH v2 09/12] macintosh/via-pmu: Replace via-pmu68k driver with via-pmu driver Finn Thain
2018-06-08 2:24 ` [PATCH v2 06/12] macintosh/via-pmu: Add support for m68k PowerBooks Finn Thain
2018-06-08 2:24 ` [PATCH v2 12/12] macintosh/via-pmu: Disambiguate interrupt statistics Finn Thain
2018-06-08 2:24 ` [PATCH v2 11/12] macintosh/via-pmu: Clean up " Finn Thain
2018-06-08 2:24 ` [PATCH v2 04/12] macintosh/via-pmu: Enhance state machine with new 'uninitialized' state Finn Thain
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