On 24.9.2022 5.35, liulongfang wrote:
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?
xhci_handle_command_timeout() will usually trigger at some point,
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.
Ok, then makes sense to add this patch.
Thanks
-Mathias
