[Bug 218490] New: Linux warning `usb: port power management may be unreliable` on Dell PowerEdge T440

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=218490

            Bug ID: 218490
           Summary: Linux warning `usb: port power management may be
                    unreliable` on Dell PowerEdge T440
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: pmenzel+bugzilla.kernel.org@molgen.mpg.de
        Regression: No

Created attachment 305865
  --> https://bugzilla.kernel.org/attachment.cgi?id=305865&action=edit
Linux 5.15.112 messages (output of `dmesg`) with system firmware 2.12.1

On the Dell PowerEdge T440 with at least system firmware version , Linux warns:

    $ dmesg | grep "may be unreliable"
    [   12.130289] usb: port power management may be unreliable
    $ dmesg | grep -e "DMI:" -e "Linux version" -e microcode
    [    0.000000] Linux version 5.15.112.mx64.449
(root@theinternet.molgen.mpg.de) (gcc (GCC) 10.4.0, GNU ld (GNU Binutils) 2.40)
#1 SMP Tue May 23 12:51:43 CEST 2023
    [    0.000000] DMI: Dell Inc. PowerEdge T440/021KCD, BIOS 2.12.2 07/09/2021
    [    2.185611] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no
microcode
    [   12.269955] microcode: sig=0x50657, pf=0x80, revision=0x5003103
    [   12.276243] microcode: Microcode Update Driver: v2.2.
    $ usb-devices

    T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh=16
    D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1d6b ProdID=0002 Rev=05.15
    S:  Manufacturer=Linux 5.15.112.mx64.449 xhci-hcd
    S:  Product=xHCI Host Controller
    S:  SerialNumber=0000:00:14.0
    C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=01 Lev=01 Prnt=01 Port=13 Cnt=01 Dev#=  2 Spd=480 MxCh= 4
    D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1604 ProdID=10c0 Rev=00.00
    C:  #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  3 Spd=480 MxCh= 4
    D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1604 ProdID=10c0 Rev=00.00
    C:  #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=01 Lev=02 Prnt=02 Port=03 Cnt=02 Dev#=  4 Spd=480 MxCh= 4
    D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1604 ProdID=10c0 Rev=00.00
    C:  #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=100mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh=10
    D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
    P:  Vendor=1d6b ProdID=0003 Rev=05.15
    S:  Manufacturer=Linux 5.15.112.mx64.449 xhci-hcd
    S:  Product=xHCI Host Controller
    S:  SerialNumber=0000:00:14.0
    C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

-- 
You may reply to this email to add a comment.

You are receiving this mail because:
You are watching the assignee of the bug.