> Am 19.01.2014 um 13:19 schrieb Igor Gnatenko <i.gnatenko.brain@xxxxxxxxx>: > > On Sun, 2014-01-19 at 11:57 +0100, Sergei Antonov wrote: >>> Am 17.01.2014 um 11:06 schrieb Stanislaw Gruszka <sgruszka@xxxxxxxxxx>: >>> >>>> On Tue, Jan 14, 2014 at 07:28:39PM +0100, Sergei Antonov wrote: >>>> Hello! >>>> I use a USB Wi-Fi adapter identified as follows. >>>> >>>> usb 2-4: new high-speed USB device number 5 using ehci-pci >>>> usb 2-4: New USB device found, idVendor=148f, idProduct=5370 >>>> usb 2-4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >>>> usb 2-4: Product: 802.11 n WLAN >>>> usb 2-4: Manufacturer: Ralink >>>> usb 2-4: SerialNumber: 1.0 >>>> usb 2-4: reset high-speed USB device number 5 using ehci-pci >>>> ieee80211 phy3: rt2x00_set_rt: Info - RT chipset 5390, rev 0502 detected >>>> ieee80211 phy3: rt2x00_set_rf: Info - RF chipset 5370 detected >>>> >>>> It worked well with older kernels and does not with newer kernels. >>>> Specifically it fails to find any AP when scanning. >>>> The first bad commit is: >>>> >>>> commit 76773f301f2210dcc20c466aebda7118062673eb >>>> Author: Gabor Juhos <juhosg@xxxxxxxxxxx> >>>> Date: Sat Aug 17 14:09:30 2013 +0200 >>>> >>>> rt2x00: rt2800lib: use a MCU command for frequency adjustment on USB devices >>>> >>>> According to the Ralink driver, there is an MCU >>>> command which can be used to send the frequency >>>> offset value directly to the USB device without >>>> going through the RFCSR writing sequence. >>>> >>>> Based on the DPO_RT5572_LinuxSTA_2.6.0.1_20120629 >>>> driver. >>>> >>>> Reference: >>>> RTMPAdjustFrequencyOffset function in common/rt_rf.c >>>> >>>> Signed-off-by: Gabor Juhos <juhosg@xxxxxxxxxxx> >>>> Signed-off-by: John W. Linville <linville@xxxxxxxxxxxxx> >>>> >>>> After I removed this special USB handling (see the patch) the adapter >>>> works again. >>> >>> Thanks for bisecting! Could you check if following patch fixes the >>> issue? >> >> It does not fix the issue. The same broken behavior remains. > I couldn't understand one string in original RTMPAdjustFrequencyOffset. Could you try follow patch ? Tried your patch with and without Stanislaw's patch. No success.-- 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
