Hi On 19.02.2018 21:06, Kai-Heng Feng wrote:
When a USB device gets plugged on ASUS PRIME B350M-A's front ports, the xHC stops working: [ 549.114587] xhci_hcd 0000:02:00.0: WARN: xHC CMD_RUN timeout [ 549.114608] suspend_common(): xhci_pci_suspend+0x0/0xc0 returns -110 [ 549.114638] xhci_hcd 0000:02:00.0: can't suspend (hcd_pci_runtime_suspend returned -110)
Is the xhci runtime suspend something that you expected here? I mean was the plugged device first enumerated normally, driver bound, inactive and runtime suspended first?
Delay before running xHC command CMD_RUN can workaround the issue. Use a new quirk to make the delay only targets to the affected xHC.
Is this some known issue with this chip, or something figured out by trial and error?
Signed-off-by: Kai-Heng Feng <kai.heng.f...@canonical.com>
Thanks, otherwise workaround seems fine, just curious about the two details above -Mathias
