APPLIED: [PATCH 0/1][SRU][F][G][H][OEM-5.10] Dell Precision 5550 takes up to 10 seconds to respond when coming out of sleep

[Stefan Bader]

On 19.03.21 19:56, Tim Gardner wrote:
> Applied to focal/groovy linux-master-next. Thanks.
> 
> I assumed Timo and Andrea would have dropped an Acked-by if they had more time 
> in their busy schedules, so I used their Acked-by signature names in vain when 
> applying this patch to Focal and Groovy.
> 
> -rtg
> 
> On 3/15/21 2:05 AM, AceLan Kao wrote:
>> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
>>
>> BugLink: https://bugs.launchpad.net/bugs/1919123
>>
>> [Impact]
>> On some platforms, the EC doesn't support the register reading sequence
>> for sentelic[1], and then make the EC can't respond commands for a while
>> when probing. It leads to the keyboard is non-responsive for around 10
>> seconds while waking up from s2idle.
>>
>> [ 44.304488] i8042: [9804] d4 -> i8042 (command)
>> [ 44.304634] i8042: [9804] f3 -> i8042 (parameter)
>> [ 44.304787] i8042: [9804] fa <- i8042 (interrupt, 1, 12)
>> [ 44.304855] i8042: [9804] d4 -> i8042 (command)
>> [ 44.304938] i8042: [9804] 66 -> i8042 (parameter)
>> [ 44.337698] i8042: [9813] d4 -> i8042 (command)
>> [ 44.905695] i8042: [9942] 88 -> i8042 (parameter)
>> [ 45.497478] i8042: [10102] d4 -> i8042 (command)
>> [ 46.098041] i8042: [10253] f3 -> i8042 (parameter)
>> [ 46.098070] i8042: [10253] fe <- i8042 (interrupt, 1, 12)
>> [ 46.718154] i8042: [10386] d4 -> i8042 (command)
>> [ 47.309915] i8042: [10386] f4 -> i8042 (parameter)
>> [ 47.918961] i8042: [10556] d4 -> i8042 (command)
>> [ 48.402624] i8042: [10556] f6 -> i8042 (parameter)
>>
>> [Fix]
>> A DMI quirk to mark this platform doesn't have aux device could avoid
>> those commands to be sent. And the system could still using i2c
>> interface to communicate with the touchpad.
>> https://lkml.org/lkml/2021/3/15/126
>>
>> [Test]
>> Verified on Dell Precision 5550
>>
>> [Where problem could occur]
>> The quirk only affects the listed platform, there is no regression could occur.
>>
>> Chia-Lin Kao (AceLan) (1):
>>    UBUNTU: SAUCE: Input: i8042 - add dmi quirk
>>
>>   drivers/input/serio/i8042.c | 21 +++++++++++++++++++++
>>   1 file changed, 21 insertions(+)
>>
> 
I don't think this patch should have applied as it has no ACKs at all. Also this 
is a patch which had, when submitted, not even reached linux-next upstream which 
imo should be a requirement for stable release updates.
Please drop it again from G and F, if it has reached linux-next we can properly 
ack it and then apply it non-SAUCE and with proper upstream SHA1 reference.

-Stefan

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