2009/3/29 Fabio Rossi <rossi.f@xxxxxxxxx>: > On Sunday 29 March 2009, Nick Kossifidis wrote: > >> I can understand how this patch may have resulted a noise floor >> calibration timeout but i can't understand how it broke everything >> else. I've tested it with a very similar card (same MAC and PHY chips >> but from a different vendor) and it worked just fine. Also i know >> there is still something more to fix for RF5112 while setting rf >> buffer settings and we have 2 curves but i don't think that's related. > > I was using wireless-testing when I have experienced the problem. Then after > the bisectioning procedure I removed the entire patch solving the problem with > the authentication-association process. > > Does also your board support 802.11abg? I don't understand why the noise > calibration process remains stuck @ 5.18GHz. > Yup i have exactly the same phy chip as you. > Is it possible to split your patch in shorter pieces to isolate the problem? > This patch introduces a function (and some helpers) to set 2 tables on hardware, it doesn't mess with the rest of the driver. I've tested it both on sta and ap scenarios with all the cards i have available and it worked fine. If you want to make more tests just disable parts of hw_txpower on phy.c, you can start by commenting out everything below ath5k_setup_rate_powertable(ah, txpower, &rate_info, ee_mode); to skip the setting of tx power, if you comment out the whole function you'll disable the functionality that this patch adds. >> This is even more weird, do you have an SMP system ? That warning you >> get is from the periodic calibration function, it seems you run this >> function too often... > > Unfortunately I don't have a SMP system but a very old processor, an Athlon > Thunderbird 900MHz :-( I have to manually reboot the system (hardware button, > the software procedure doesn't work). > My initial thought was that one of the cpus was stuck, running the calibration function again and again which would result what you describe. Check this out... Mar 29 11:08:45 kernel: udev: renamed network interface wlan0 to ath0 Mar 29 11:09:03 kernel: ath5k phy0: noise floor calibration timeout (5180MHz) Mar 29 11:09:36 last message repeated 3 times Mar 29 11:10:43 last message repeated 6 times Mar 29 11:11:48 last message repeated 6 times Mar 29 11:12:54 last message repeated 6 times Mar 29 11:14:00 last message repeated 6 times Mar 29 11:15:06 last message repeated 6 times Mar 29 11:16:12 last message repeated 6 times Calibration functions runs almost 6 times /min which makes sense (we run it each 10 secs) but... a) It always fails b) It's always called with the same channel > Tell me if you need other information, I'll test possible patches to solve the > problem. How about scanning or monitor mode, does it work ? -- GPG ID: 0xD21DB2DB As you read this post global entropy rises. Have Fun ;-) Nick -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
