[Bug 253919] psm0: failed to reset the aux device after suspend/resume

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253919

            Bug ID: 253919
           Summary: psm0: failed to reset the aux device after
                    suspend/resume
           Product: Base System
           Version: 12.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: jwb at freebsd.org

Toshiba Satellite

dmidecode:

System Information
        Manufacturer: TOSHIBA
        Product Name: Satellite L305
        Version: PSLB8U-027025
        Serial Number: 29584648Q
        UUID: ad6b6980-0176-11de-bba9-001e33a2372a
        Wake-up Type: Power Switch
        SKU Number: Montevina_Fab
        Family: Intel_Mobile

Handle 0x000E, DMI type 21, 7 bytes
Built-in Pointing Device
        Type: Touch Pad
        Interface: PS/2
        Buttons: 4

Boot message:

Feb 26 10:43:58 orca kernel: psm0: <PS/2 Mouse> irq 12 on atkbdc0
Feb 26 10:43:58 orca kernel: psm0: [GIANT-LOCKED]
Feb 26 10:43:58 orca kernel: psm0: model Synaptics Touchpad, device ID 0

The following occurs infrequently after a suspend/resume cycle:

Feb 28 11:39:27 orca kernel: psm0: failed to reset the aux device.
Feb 28 11:39:27 orca kernel: psm0: the aux device has gone! (reinitialize).

This is an old, cheap laptop, but I suspect this issue might affect others as
well, so I'm here to help diagnose it if possible.

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