Hi Julien, > From: [email protected] [mailto:linux-wireless- > [email protected]] On Behalf Of Julien Cubizolles > Sent: Thursday, July 23, 2015 7:18 PM > To: [email protected] > Subject: wifi freezing (module mwifiex) > > I'm running vanilla kernel 4.2.0-rc3 on a Microsoft Surface Pro. The > wifi (module mwifiex) freezes the whole system after a few seconds of > use. The problem appeared around kernel 3.19. > > I've tried to get some debug info with the dynamic debugging method, > using the following: > > --8<---------------cut here---------------start------------->8--- > echo "module mwifiex +p" > /sys/kernel/debug/dynamic_debug/control > echo "module mwifiex_sdio +p" > /sys/kernel/debug/dynamic_debug/control > echo "module mwifiex_pcie +p" > /sys/kernel/debug/dynamic_debug/control > echo "module mwifiex_usb +p" > /sys/kernel/debug/dynamic_debug/control > --8<---------------cut here---------------end--------------->8--- > > and getting the messages with > > --8<---------------cut here---------------start------------->8--- > while true; do dmesg -c >> mwifiex_logs.txt; sleep 1; done & > --8<---------------cut here---------------end--------------->8--- > > until the system freezes. > > Surprisingly, there are very few messages related to mwifiex (see the > following logs). Is there something wrong with the dynamic debugging ? > What other information could I provide ? >
Thanks for reporting the problem. We now have a separate mechanism for debug logs and don't support dynamic debugging anymore. Issue below command to enable logs and share them. "echo 0xffffffff > /sys/kernel/debug/mwifiex/mlan0/debug_mask" Do you have following USB chipset specific fixes included? http://www.spinics.net/lists/linux-wireless/msg129129.html http://www.spinics.net/lists/netdev/msg334367.html Regards, Amitkumar
