Hi everyone, I'm currently trying to use a RTL8192CU on an ARM (Freescale imx28, armv5) platform, using 3.10-rc3. Trouble is, while the chip is correctly detected and you can use iw on it without any problem it seems, once you start an association to an access point, the association goes on, seems to associate, displaying a WARN() message [1] and then, after what looks like a random amount of time (could be right away, could be after a few minutes), deassociate [2]. During the time where it's associated, we never seem to transmit any packets, while iw reports packets being sent, I guess we can assume that they are actually never transmitted as well [3]. What seems odd to me as well is that the signal power reported for the access point is excessively high when using iw scan (10 dbm), and once connected, the signal strength is -64dbm, which makes quite a huge difference. Do you have any suggestions on how to solve this issue? Thanks, Maxime [1]: # iw wlan0 connect FreeWifi 2447 # [ 485.010858] wlan0: authenticate with f4:ca:e5:c9:f5:91 [ 485.065514] wlan0: send auth to f4:ca:e5:c9:f5:91 (try 1/3) [ 485.075963] wlan0: authenticated [ 485.088915] wlan0: associate with f4:ca:e5:c9:f5:91 (try 1/3) [ 485.117137] wlan0: RX AssocResp from f4:ca:e5:c9:f5:91 (capab=0x401 status=0 aid=1) [ 485.130607] wlan0: associated [ 486.917555] ------------[ cut here ]------------ [ 486.922277] WARNING: at kernel/workqueue.c:1365 __queue_work+0x1f0/0x2f4() [ 486.929175] Modules linked in: [ 486.932284] CPU: 0 PID: 615 Comm: kworker/0:2 Not tainted 3.10.0-rc3 #2 [ 486.938958] Workqueue: rtl92c_usb rtl_watchdog_wq_callback [ 486.944548] [<c00147dc>] (unwind_backtrace+0x0/0xf0) from [<c00120a0>] (show_stack+0x10/0x14) [ 486.953132] [<c00120a0>] (show_stack+0x10/0x14) from [<c001d2ec>] (warn_slowpath_common+0x4c/0x68) [ 486.962140] [<c001d2ec>] (warn_slowpath_common+0x4c/0x68) from [<c001d324>] (warn_slowpath_null+0x1c/0x24) [ 486.971844] [<c001d324>] (warn_slowpath_null+0x1c/0x24) from [<c003769c>] (__queue_work+0x1f0/0x2f4) [ 486.981025] [<c003769c>] (__queue_work+0x1f0/0x2f4) from [<c0037830>] (queue_work_on+0x80/0x88) [ 486.989777] [<c0037830>] (queue_work_on+0x80/0x88) from [<c0267ca4>] (rtl_watchdog_wq_callback+0x5dc/0x8bc) [ 486.999572] [<c0267ca4>] (rtl_watchdog_wq_callback+0x5dc/0x8bc) from [<c0038cbc>] (process_one_work+0x1c0/0x4c8) [ 487.009795] [<c0038cbc>] (process_one_work+0x1c0/0x4c8) from [<c0039684>] (worker_thread+0x140/0x3ac) [ 487.019065] [<c0039684>] (worker_thread+0x140/0x3ac) from [<c003f914>] (kthread+0xa4/0xb0) [ 487.027381] [<c003f914>] (kthread+0xa4/0xb0) from [<c000f0c0>] (ret_from_fork+0x14/0x34) [ 487.035498] ---[ end trace 93341a0c249e647e ]--- [2]: # [ 786.086127] wlan0: deauthenticated from f4:ca:e5:c9:f5:91 (Reason: 2) [ 786.126368] cfg80211: Calling CRDA to update world regulatory domain [3]: # iw wlan0 station dump Station f4:ca:e5:c9:f5:91 (on wlan0) inactive time: 55430 ms rx bytes: 77826 rx packets: 1026 tx packets: 2 tx retries: 0 tx failed: 0 signal: -64 dBm signal avg: -63 dBm tx bitrate: 1.0 MBit/s authorized: yes authenticated: yes preamble: long WMM/WME: yes MFP: no TDLS peer: no -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
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