On Thu, Aug 21, 2025 at 05:13:27AM +0200, Andrew Lunn wrote: > > 'mucse_mbx_fw_post_req' is designed can be called by 'cat /sys/xxx', > > It is pretty unusual for ethernet drivers to export data in /sys, > except via standard APIs, like statistics, carrier, address, opstate > etc. I don't know how well the core will handle EINTR. It is not > something most drivers do. -ETIMEDOUT is more likely when the firmware > has crashed and does not respond in time. > > Do you have any operations which take a long time when things are > working correctly? > > Andrew > 'Update firmware operation' will take long time, maybe more than 10s. If user use 'ethtool -f' to update firmware, and ^C before done? If ^C before mucse_write_mbx, return as soon as possible. If after mucse_write_mbx, wait until fw true response.
