On Wed, Apr 12, 2023 at 07:54:28PM +0800, qianfan wrote: > Hi: > > The linux system maybe hang in usb_wwan_indat_callback when the usb modem > sudden disconnected. This problem has a very small probability and can not > make it repeat easy. > > hardware: allwinner R40 with 4 cortex-a7 > software: linux 5.15.0 5.15.0 is _VERY_ old, sorry. Please try using a modern kernel release, we can not do anything about old kernels like this. Does this still happen on the latest 6.2 release, or the latest 6.3-rc release? thanks, greg k-h
