From 40b130a947672d0ca886b718bfc4bd7641b6b39d Mon Sep 17 00:00:00 2001 From: Vasanthakumar Thiagarajan Date: Mon, 16 Feb 2009 13:55:07 +0530 Subject: [PATCH] ath9k: Fix panic upon attach failure [246916.338046] [246916.338048] Pid: 29265, comm: insmod Not tainted (2.6.29-rc4-wl #64) 9461DUU [246916.338051] EIP: 0060:[] EFLAGS: 00010202 CPU: 0 [246916.338055] EIP is at rollback_registered+0x24/0x220 [246916.338057] EAX: 00000001 EBX: 00000000 ECX: 00000000 EDX: f122e8fc [246916.338059] ESI: 00000000 EDI: 00000000 EBP: f6595d30 ESP: f6595d1c [246916.338062] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 [246916.338064] Process insmod (pid: 29265, ti=f6594000 task=f7343fe0 task.ti=f6594000) [246916.338067] Stack: [246916.338068] c04a2920 22222222 f6595d48 00000000 f122f080 f6595d48 c02ca489 f122e8fc [246916.338076] f122e220 f122f080 f122e220 f6595d5c f8a03156 f122e220 f122f080 f122e220 [246916.338085] f6595d80 f87359af f122f080 00002000 f874e129 f122f150 f122f080 f6290000 [246916.338094] Call Trace: [246916.338096] [] ? unregister_netdevice+0x19/0x70 [246916.338100] [] ? ieee80211_unregister_hw+0x36/0xd0 [mac80211] [246916.338112] [] ? ath_detach+0xcf/0x250 [ath9k] [246916.338127] [] ? ath_attach+0x26c/0x740 [ath9k] [246916.338139] [] ? ath_pci_probe+0x13a/0x310 [ath9k] [246916.338151] [] ? _raw_spin_unlock+0x68/0x80 [246916.338158] [] ? local_pci_probe+0xe/0x10 [246916.338162] [] ? pci_device_probe+0x60/0x80 [246916.338169] [] ? driver_probe_device+0x82/0x1b0 [246916.338174] [] ? __driver_attach+0x89/0x90 [246916.338180] [] ? bus_for_each_dev+0x4b/0x70 [246916.338184] [] ? pci_device_remove+0x0/0x40 [246916.338190] [] ? driver_attach+0x19/0x20 [246916.338193] [] ? __driver_attach+0x0/0x90 [246916.338197] [] ? bus_add_driver+0x1b7/0x230 [246916.338203] [] ? pci_device_remove+0x0/0x40 [246916.338206] [] ? driver_register+0x69/0x140 [246916.338212] [] ? ath9k_init+0x0/0x54 [ath9k] [246916.338221] [] ? __pci_register_driver+0x4e/0x90 [246916.338225] [] ? ath9k_init+0x0/0x54 [ath9k] [246916.338232] [] ? ath_pci_init+0x17/0x19 [ath9k] [246916.338238] [] ? ath9k_init+0x17/0x54 [ath9k] [246916.338245] [] ? tracepoint_update_probe_range+0x7e/0xb0 [246916.338249] [] ? do_one_initcall+0x2a/0x170 [246916.338252] [] ? up_read+0x16/0x30 [246916.338256] [] ? __blocking_notifier_call_chain+0x4d/0x60 [246916.338265] [] ? sys_init_module+0x8a/0x1c0 [246916.338269] [] ? trace_hardirqs_on_thunk+0xc/0x10 [246916.338272] [] ? sysenter_do_call+0x12/0x43 [246916.338276] Code: 8d bc 27 00 00 00 00 55 89 e5 56 89 c6 53 83 ec 0c a1 74 27 4a c0 85 c0 0f 85 4b 01 00 00 e8 04 7d 00 00 85 c0 0f 84 c9 01 00 00 <8b> 86 18 03 00 00 85 c0 0f 84 86 01 00 00 83 e8 01 0f 85 71 01 [246916.338328] EIP: [] rollback_registered+0x24/0x220 SS:ESP 0068:f6595d1c [246916.338335] ---[ end trace 76357c56a75ea34e ]--- Signed-off-by: Vasanthakumar Thiagarajan Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/main.c | 24 +++++++++++++++++------- 1 file changed, 17 insertions(+), 7 deletions(-) diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 727f067..0e80990 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -1538,6 +1538,7 @@ bad2: bad: if (ah) ath9k_hw_detach(ah); + ath9k_exit_debug(sc); return error; } @@ -1545,7 +1546,7 @@ bad: static int ath_attach(u16 devid, struct ath_softc *sc) { struct ieee80211_hw *hw = sc->hw; - int error = 0; + int error = 0, i; DPRINTF(sc, ATH_DBG_CONFIG, "Attach ATH hw\n"); @@ -1589,11 +1590,11 @@ static int ath_attach(u16 devid, struct ath_softc *sc) /* initialize tx/rx engine */ error = ath_tx_init(sc, ATH_TXBUF); if (error != 0) - goto detach; + goto error_attach; error = ath_rx_init(sc, ATH_RXBUF); if (error != 0) - goto detach; + goto error_attach; #if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE) /* Initialze h/w Rfkill */ @@ -1601,8 +1602,9 @@ static int ath_attach(u16 devid, struct ath_softc *sc) INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll); /* Initialize s/w rfkill */ - if (ath_init_sw_rfkill(sc)) - goto detach; + error = ath_init_sw_rfkill(sc); + if (error) + goto error_attach; #endif error = ieee80211_register_hw(hw); @@ -1611,8 +1613,16 @@ static int ath_attach(u16 devid, struct ath_softc *sc) ath_init_leds(sc); return 0; -detach: - ath_detach(sc); + +error_attach: + /* cleanup tx queues */ + for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) + if (ATH_TXQ_SETUP(sc, i)) + ath_tx_cleanupq(sc, &sc->tx.txq[i]); + + ath9k_hw_detach(sc->sc_ah); + ath9k_exit_debug(sc); + return error; } -- 2.7.4