Bug 4324 - Add support for disabling PhyRdy Change Interrupt based on actual LPM capability
Summary: Add support for disabling PhyRdy Change Interrupt based on actual LPM capability
Status: NEW
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: drivers (show other bugs) drivers
Version: unspecified
Hardware: All Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: LeoLiu-oc
QA Contact: shuming
URL:
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Blocks:
 
Reported: 2023-03-02 20:18 UTC by LeoLiu-oc
Modified: 2024-06-20 14:10 UTC (History)
2 users (show)

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Description LeoLiu-oc zhaoxin_group 2023-03-02 20:18:21 UTC 
Description of problem:
In AHCI spec, PhyRdy Change Interrupt cannot coexist with
Link Power Management (LPM). While LPM driver would disable
PhyRdy Change interrupt without checking whether HBA supports
LPM or not before enabling it. Therefore, if enabling LPM from
LPM driver by default, we can not disable it from BIOS without
influence Hotplug out capability.

Version-Release number of selected component (if applicable):


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Additional info:
Comment 1 小龙 admin 2024-01-15 18:25:20 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/2601
Comment 2 小龙 admin 2024-06-20 14:10:13 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/3373