On 2022/9/22 21:01, Mathias Nyman Wrote: > Hi > > On 15.9.2022 4.11, Longfang Liu wrote: >> When HCE(Host Controller Error) is set, it means that the xhci hardware >> controller has an error at this time, but the current xhci driver >> software does not log this event. >> >> By adding an HCE event detection in the xhci interrupt processing >> interface, a warning log is output to the system, which is convenient >> for system device status tracking. >> > > xHC should cease all activity when it sets HCE, and is probably not > generating interrupts anymore. > > Would probably be more useful to check for HCE at timeouts than in the > interrupt handler. > Which function of the driver code is this timeout in? > If this is something seen on actual hardware then it makes sense to add it. > This HCE error is sure to report an interrupt on the chip we are using. > Thanks > -Mathias > . > Thansk, Longfang.
