On Wed, Apr 04, 2018 at 09:50:15AM +0200, Einar Vading wrote: > When using RS485 in half duplex mode the RTS line is typically used to > toggle receive/transmit on the transceiver IC. As some protocols (OSDP > f.ex.) specify that the slave should respond within some short time period, > it is important that the RTS line toggles the transceiver from transmit > mode to receive mode within that time. > > This change puts a pm_qos requirement on CPU_DMA_LATENCY when in RS485 tx > mode so that CPU wake times won't cause to long delays. > > Signed-off-by: Einar Vading <einarv@xxxxxxxx> > > Change-Id: I6a44ff2b5283d7bc728cdc1cbfb6f60c2bca73d5 You should have gotten a complain from checkpatch.pl that this line is not needed :( I'll remove it this time, please be more careful in the future. greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
