0) Every now and then an error appears in the logs of a laptop:
iwl4965 [...]: Can't stop Rx DMA.
Last time it was triggered while suspending this laptop.
1) This error is printed by il4965_rxq_stop() in
drivers/net/wireless/iwlegacy/4965-mac.c. (An identical function is
il3945_hw_rxq_stop() in drivers/net/wireless/iwlegacy/3945.c.)
A similar function is iwl_trans_rx_stop() in
drivers/net/wireless/iwlwifi/pcie/trans.c. That function will never
print any messages.
2) Why is this error needed? This function will always return 0,
regardless whether that error was printed or not, and the sole caller of
this function ignores the returned zero anyway. Can't it be downgraded
to debug level or perhaps even removed? If so, I'd be happy to submit
the trivial patch to do so.
Paul Bolle
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