On Fri, Mar 4, 2011 at 6:25 AM, Justin Mattock <justinmattock@xxxxxxxxx> wrote: > On Thu, Mar 3, 2011 at 5:59 AM, John W. Linville <linville@xxxxxxxxxxxxx> wrote: >> On Wed, Mar 02, 2011 at 09:47:43PM -0800, Justin Mattock wrote: >>> not sure what this is..(below) >>> >>> >>> [ 33.951046] CE: hpet increased min_delta_ns to 20113 nsec >>> [ 35.567319] EXT4-fs (sda3): re-mounted. Opts: >>> errors=panic,user_xattr,debug,acl,commit=600 >>> [ 36.350144] wlan0: authenticate with 00:0b:86:32:f8:60 (try 1) >>> [ 36.352284] wlan0: authenticated >>> [ 36.352396] wlan0: associate with 00:0b:86:32:f8:60 (try 1) >>> [ 36.356854] wlan0: RX AssocResp from 00:0b:86:32:f8:60 (capab=0x421 >>> status=0 aid=2) >>> [ 36.356862] wlan0: associated >>> [ 41.370318] ath: DMA failed to stop in 10 ms AR_CR=0x00000024 >>> AR_DIAG_SW=0x42000020 >>> [ 41.370324] ath: Could not stop RX, we could be confusing the DMA >>> engine when we start RX up >>> [ 41.370328] ------------[ cut here ]------------ >>> [ 41.370345] WARNING: at drivers/net/wireless/ath/ath9k/recv.c:536 >>> ath_stoprecv+0xc8/0xda [ath9k]() >>> [ 41.370349] Hardware name: MacBookPro2,2 >>> [ 41.370351] Modules linked in: hidp xfrm4_mode_transport xcbc >>> rmd160 sha512_generic rfcomm sco bnep l2cap ipt_REJECT xt_tcpudp >>> ipt_LOG iptable_nat nf_nat xt_state nf_conntrack_ftp nf_conntrack_ipv4 >>> nf_conntrack nf_defrag_ipv4 iptable_filter ip_tables x_tables btusb >>> bluetooth evdev psmouse thermal fan container button ac battery video >>> ath9k ath9k_common ath9k_hw ath ttm drm aes_x86_64 lzo zlib ipcomp >>> xfrm_ipcomp crypto_null sha256_generic cbc des_generic cast5 blowfish >>> serpent camellia twofish_generic twofish_x86_64 twofish_common ctr ah4 >>> esp4 authenc firewire_ohci firewire_core uhci_hcd ehci_hcd coretemp >>> acpi_cpufreq processor mperf appletouch applesmc >>> [ 41.370430] Pid: 766, comm: kworker/u:4 Not tainted >>> 2.6.38-rc6-00116-g2821f46 #5 >>> [ 41.370434] Call Trace: >>> [ 41.370444] [<ffffffff810612c0>] ? warn_slowpath_common+0x80/0x98 >>> [ 41.370450] [<ffffffff810612ed>] ? warn_slowpath_null+0x15/0x17 >>> [ 41.370458] [<ffffffffa01c6438>] ? ath_stoprecv+0xc8/0xda [ath9k] >>> [ 41.370467] [<ffffffffa01c3a62>] ? ath_set_channel+0xb0/0x217 [ath9k] >>> [ 41.370475] [<ffffffffa01c3f89>] ? ath9k_config+0x3c0/0x4c3 [ath9k] >>> [ 41.370482] [<ffffffff8140fe8a>] ? ieee80211_hw_config+0x120/0x129 >>> [ 41.370487] [<ffffffff81413902>] ? ieee80211_scan_work+0x2f8/0x496 >>> [ 41.370495] [<ffffffffa01c7934>] ? >>> ath_tx_complete_poll_work+0xf3/0x102 [ath9k] >>> [ 41.370501] [<ffffffff8141360a>] ? ieee80211_scan_work+0x0/0x496 >>> [ 41.370506] [<ffffffff810769c7>] ? process_one_work+0x266/0x3d7 >>> [ 41.370511] [<ffffffff81076e9f>] ? worker_thread+0x1d6/0x350 >>> [ 41.370515] [<ffffffff81076cc9>] ? worker_thread+0x0/0x350 >>> [ 41.370521] [<ffffffff8107bdcf>] ? kthread+0x7d/0x85 >>> [ 41.370528] [<ffffffff8102e064>] ? kernel_thread_helper+0x4/0x10 >>> [ 41.370533] [<ffffffff8107bd52>] ? kthread+0x0/0x85 >>> [ 41.370537] [<ffffffff8102e060>] ? kernel_thread_helper+0x0/0x10 >>> [ 41.370541] ---[ end trace 062f507148a6fa8e ]--- >>> >>> >>> from what I remember I was at a local college(caltech) trying to >>> connect to their public wifi >>> in the public area. with no luck, then this popped up. >>> full dmesg here: >>> >>> http://fpaste.org/SKU4/ >> >> In ath_stoprecv: >> >> if (!(ah->ah_flags & AH_UNPLUGGED) && >> unlikely(!stopped)) { >> ath_err(ath9k_hw_common(sc->sc_ah), >> "Could not stop RX, we could be " >> "confusing the DMA engine when we start RX up\n"); >> ATH_DBG_WARN_ON_ONCE(!stopped); >> } >> >> The Atheros guys will have to comment. >> >> John >> -- >> John W. Linville Someday the world will need a hero, and you >> linville@xxxxxxxxxxxxx might be all we have. Be ready. >> > > cool, thanks for the reply. > yeah this is strange, seems to have happened in that location and not others. > (if I have time wouldn't mind testing out other kernel versions and > maybe a bisect to > grab this) Hi, Can you please try the obvious way of increasing the timeout for stopping the DMA ? in mac.c 148 #define ATH9K_TX_STOP_DMA_TIMEOUT 4000 /* usec */ increase it to 10000 usec and 781#define AH_RX_STOP_DMA_TIMEOUT 10000 /* usec */ increase it to 20,000 usec > > -- > Justin P. Mattock > -- > 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 > -- 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
