thanks for your reply > May the detection of a null pointer for the data structure members > “dest_ring” or “status_ring” really be interpreted as a successful execution > of the function “ath11k_ce_rx_post_pipe”? i submit this patch just want to ensure the last codes after `if(...)` in `ath11k_ce_rx_post_pipe` can be successfully executed. There is no error handling for NULL dest_ring (or status_ring) in other funtions calling `ath11k_ce_rx_post_pipe()`, because it would return 0, like successful end. I think this patch can not change so many codes in other functions in ce. This may involve a lot of error handling operations, and depending on the severity of situation, the driver may even re_setup the ring. I will submit a v5 patch, and in that patch an error code will be returned. Baichuan Qi
