[SRU][Bionic][PATCH 0/2] Fixes for LP:1777857

[Stefan Bader]

On 16.07.2018 16:24, Thadeu Lima de Souza Cascardo wrote:
> On Fri, Jun 22, 2018 at 12:22:39PM -0400, Joseph Salisbury wrote:
>> == SRU Justification ==
>> IBM is seeing kernel traces during testing.  This is due to a missing 
>> backport of some kernel fixes in the RTC driver, which is commit
>> 682e6b4da5cb.  Commit 682e6b4da5cb was also cc'd to upstream stable, but
>> it has not landed in Bionic as of yet.  It is also a fix to upstream
>> commit 628daa8d5abf.
>>
>> Commit 34dd25de9fe3 is also needed as a prereq to define
>> OPAL_BUSY_DELAY_MS.
>>
>> == Fixes ==
>> 34dd25de9fe3 ("powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops")
>> 682e6b4da5cb ("rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops")
> 
> I see these two patches already applied for LP#1773964. Is this bug a
> duplicate?

Half correct I believe. It is even worse, patch #2 was applied for LP: #1773964
but patch #1 was applied as part of the 2018-05-24 upstream stable patchset as a
pre-requisite of "powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops" (note
the s/RTC/NVRAM/).

-Stefan

> 
> Cascardo.
> 
>>
>> == Regression Potential ==
>> Low.  Limited to powerpc.  Fixes a current regression.
>>
>> == Test Case ==
>> A test kernel was built with these patches and tested by the original bug reporter.
>> The bug reporter states the test kernel resolved the bug.
>>
>> Nicholas Piggin (2):
>>   powerpc/powernv: define a standard delay for OPAL_BUSY type retry
>>     loops
>>   rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops
>>
>>  arch/powerpc/include/asm/opal.h           |  3 +++
>>  arch/powerpc/platforms/powernv/opal-rtc.c |  8 ++++---
>>  drivers/rtc/rtc-opal.c                    | 37 +++++++++++++++++++------------
>>  3 files changed, 31 insertions(+), 17 deletions(-)
>>
>> -- 
>> 2.7.4
>>
>>
>> -- 
>> kernel-team mailing list
>> kernel-team at lists.ubuntu.com
>> https://lists.ubuntu.com/mailman/listinfo/kernel-team
> 


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