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[linux-6.6.y] ata: libata: disabling PhyRdy Change Interrupt based on actual LPM capability #264

Merged
merged 1 commit into from
Jun 25, 2024
Merged

[linux-6.6.y] ata: libata: disabling PhyRdy Change Interrupt based on actual LPM capability #264

merged 1 commit into from
Jun 25, 2024

Commits on Jun 13, 2024

  1. ata: libata: disabling PhyRdy Change Interrupt based on actual LPM ca… 

    …pability

zhaoxin inclusion
category: bugfix
CVE: NA

-----------------

The ahci spec mentions that PhyRdy Change Interrupt and Link Power
Management (LPM) do not coexist.

However, before enabling LPM, the driver did not check whether the host
supports LPM, but directly disabled PhyRdy Change Interrupt.

Increase the judgment on the actual support of LPM, and disable PhyRdy
Change Interrupt only when it is supported.

Signed-off-by: leoliu-oc <[email protected]>
    @leoliu-oc
    leoliu-oc committed Jun 13, 2024
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