Bug 7185 - [ANCK 4.19] i2c: qcom-geni: Add shutdown callback for i2c
Summary: [ANCK 4.19] i2c: qcom-geni: Add shutdown callback for i2c
Status: NEW
Alias: None
Product: ANCK 4.19 Dev
Classification: ANCK
Component: drivers (show other bugs) drivers
Version: unspecified
Hardware: x86_64 Linux
: P3-Medium S3-normal
Target Milestone: ---
Assignee: GuixinLiu
QA Contact: shuming
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2023-11-08 10:17 UTC by Zh_hhhhh
Modified: 2023-11-08 10:24 UTC (History)
2 users (show)

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Description Zh_hhhhh cmss_group 2023-11-08 10:17:47 UTC 
Description of problem:

如果在SMMU转换被禁用后(作为SMMU关闭回调的一部分)硬件仍在访问内存，那么它正在使用的IOVAs (I/O虚拟地址)将作为物理地址在总线上运行，这将导致未知的崩溃，如NoC/互连错误
Comment 1 小龙 admin 2023-11-08 10:24:45 UTC 
The PR Link: https://gitee.com/anolis/cloud-kernel/pulls/2414