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Message-ID: <CACQ1gAisWv++hh1J6XSQq=5_QioYb8e1gEUNMYGeOEM7vsrR=A@mail.gmail.com> Date: Tue, 11 Jun 2013 15:42:21 +0200 From: Richard Genoud <richard.genoud@...il.com> To: Larry Finger <Larry.Finger@...inger.net> Cc: Chaoming Li <chaoming_li@...lsil.com.cn>, "John W. Linville" <linville@...driver.com>, linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: rtl8192cu: slow path warning and connection problem v3.10-rc5 2013/6/11 Richard GENOUD <richard.genoud@...il.com>: > Hi, > > I've got an usb wireless adapter TP-Link TL-WN725N > http://www.tp-link.com/ca/products/details/?categoryid=241&model=TL-WN725N > It is based on the rtl8192cu chip. > I'm running a recent kernel (3.10-rc5) on a arm-based board (at91sam9g35-ek). > and last linux-firmwares (2892af0) > # iw wlan0 connect test > # [ 70.718750] wlan0: authenticate with 00:1c:10:69:90:fe > [ 70.718750] wlan0: Allocated STA 00:1c:10:69:90:fe > [ 70.742187] wlan0: Inserted STA 00:1c:10:69:90:fe > [ 70.742187] wlan0: send auth to 00:1c:10:69:90:fe (try 1/3) > [ 70.757812] wlan0: authenticated > [ 70.757812] wlan0: moving STA 00:1c:10:69:90:fe to state 2 > [ 70.765625] rtl8192cu 1-2.3:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP > [ 70.773437] rtl8192cu 1-2.3:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP > [ 70.789062] wlan0: associate with 00:1c:10:69:90:fe (try 1/3) > [ 70.804687] wlan0: RX AssocResp from 00:1c:10:69:90:fe (capab=0x401 status=0 aid=1) > [ 70.812500] wlan0: moving STA 00:1c:10:69:90:fe to state 3 > [ 70.820312] wlan0: moving STA 00:1c:10:69:90:fe to state 4 > [ 70.828125] wlan0: associated > [ 71.187500] ------------[ cut here ]------------ > [ 71.187500] WARNING: at kernel/workqueue.c:1365 __queue_work+0x180/0x1f8() > [ 71.187500] CPU: 0 PID: 593 Comm: kworker/0:2 Not tainted 3.10.0-rc5-00133-g691a986 #6 > [ 71.187500] Workqueue: rtl92c_usb rtl_watchdog_wq_callback > [ 71.187500] [<c000d2a0>] (unwind_backtrace+0x0/0xf0) from [<c000ba34>] (show_stack+0x10/0x14) > [ 71.187500] [<c000ba34>] (show_stack+0x10/0x14) from [<c00150fc>] (warn_slowpath_common+0x48/0x64) > [ 71.187500] [<c00150fc>] (warn_slowpath_common+0x48/0x64) from [<c00151e0>] (warn_slowpath_null+0x1c/0x24) > [ 71.187500] [<c00151e0>] (warn_slowpath_null+0x1c/0x24) from [<c0029878>] (__queue_work+0x180/0x1f8) > [ 71.187500] [<c0029878>] (__queue_work+0x180/0x1f8) from [<c0029ee8>] (queue_work_on+0x44/0x50) > [ 71.187500] [<c0029ee8>] (queue_work_on+0x44/0x50) from [<c01fd850>] (rtl_watchdog_wq_callback+0x290/0x4e0) > [ 71.187500] [<c01fd850>] (rtl_watchdog_wq_callback+0x290/0x4e0) from [<c002a138>] (process_one_work+0x110/0x358) > [ 71.187500] [<c002a138>] (process_one_work+0x110/0x358) from [<c002a728>] (worker_thread+0xf4/0x308) > [ 71.187500] [<c002a728>] (worker_thread+0xf4/0x308) from [<c002f8b4>] (kthread+0xa4/0xb0) > [ 71.187500] [<c002f8b4>] (kthread+0xa4/0xb0) from [<c00091b0>] (ret_from_fork+0x14/0x24) > [ 71.187500] ---[ end trace 5f274d456b3a4c7f ]--- I've should have check this before, but the connection problem is corrected with the patch "rtlwifi: rtl8192cu: Fix problem in connecting to WEP or WPA(1) networks" Sorry for that... Anyway, running 3.10-rc5 with the for-davem wireless branch, I still have the slow path warning # iw wlan0 connect test # [ 42.226562] wlan0: authenticate with 00:1c:10:69:90:fe [ 42.226562] wlan0: Allocated STA 00:1c:10:69:90:fe [ 42.250000] wlan0: Inserted STA 00:1c:10:69:90:fe [ 42.250000] wlan0: send auth to 00:1c:10:69:90:fe (try 1/3) [ 42.281250] wlan0: authenticated [ 42.289062] wlan0: moving STA 00:1c:10:69:90:fe to state 2 [ 42.296875] rtl8192cu 1-2.3:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP [ 42.304687] rtl8192cu 1-2.3:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP [ 42.312500] wlan0: associate with 00:1c:10:69:90:fe (try 1/3) [ 42.335937] wlan0: RX AssocResp from 00:1c:10:69:90:fe (capab=0x401 status=0 aid=1) [ 42.343750] wlan0: moving STA 00:1c:10:69:90:fe to state 3 [ 42.343750] wlan0: moving STA 00:1c:10:69:90:fe to state 4 [ 42.351562] wlan0: associated [ 44.179687] ------------[ cut here ]------------ [ 44.179687] WARNING: at kernel/workqueue.c:1365 __queue_work+0x180/0x1f8() [ 44.179687] CPU: 0 PID: 580 Comm: kworker/0:2 Not tainted 3.10.0-rc5-00150-g4b16b55 #10 [ 44.179687] Workqueue: rtl92c_usb rtl_watchdog_wq_callback [ 44.179687] [<c000d2a0>] (unwind_backtrace+0x0/0xf0) from [<c000ba34>] (show_stack+0x10/0x14) [ 44.179687] [<c000ba34>] (show_stack+0x10/0x14) from [<c00150fc>] (warn_slowpath_common+0x48/0x64) [ 44.179687] [<c00150fc>] (warn_slowpath_common+0x48/0x64) from [<c00151e0>] (warn_slowpath_null+0x1c/0x24) [ 44.179687] [<c00151e0>] (warn_slowpath_null+0x1c/0x24) from [<c0029878>] (__queue_work+0x180/0x1f8) [ 44.179687] [<c0029878>] (__queue_work+0x180/0x1f8) from [<c0029ee8>] (queue_work_on+0x44/0x50) [ 44.179687] [<c0029ee8>] (queue_work_on+0x44/0x50) from [<c01fd850>] (rtl_watchdog_wq_callback+0x290/0x4e0) [ 44.179687] [<c01fd850>] (rtl_watchdog_wq_callback+0x290/0x4e0) from [<c002a138>] (process_one_work+0x110/0x358) [ 44.179687] [<c002a138>] (process_one_work+0x110/0x358) from [<c002a728>] (worker_thread+0xf4/0x308) [ 44.179687] [<c002a728>] (worker_thread+0xf4/0x308) from [<c002f8b4>] (kthread+0xa4/0xb0) [ 44.179687] [<c002f8b4>] (kthread+0xa4/0xb0) from [<c00091b0>] (ret_from_fork+0x14/0x24) [ 44.179687] ---[ end trace d23aec3c204a06ee ]--- regards, Richard. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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