1. 10 2月, 2011 3 次提交
    • E
      mac80211: add missing locking in ieee80211_reconfig · a7b545f7
      Eliad Peller 提交于
      When suspending an associated system, and then resuming,
      the station vif is being reconfigured without taking the
      sdata->u.mgd.mtx lock, which results in the following warning:
      
      WARNING: at net/mac80211/mlme.c:101 ieee80211_ap_probereq_get+0x58/0xb8 [mac80211]()
      Modules linked in: wl12xx_sdio wl12xx firmware_class crc7 mac80211 cfg80211 [last unloaded: crc7]
      Backtrace:
      [<c005432c>] (dump_backtrace+0x0/0x118) from [<c0376e28>] (dump_stack+0x20/0x24)
       r7:00000000 r6:bf12d6ec r5:bf154aac r4:00000065
      [<c0376e08>] (dump_stack+0x0/0x24) from [<c0079104>] (warn_slowpath_common+0x5c/0x74)
      [<c00790a8>] (warn_slowpath_common+0x0/0x74) from [<c0079148>] (warn_slowpath_null+0x2c/0x34)
       r9:000024ff r8:cd006460 r7:00000001 r6:00000000 r5:00000000
      r4:cf1394a0
      [<c007911c>] (warn_slowpath_null+0x0/0x34) from [<bf12d6ec>] (ieee80211_ap_probereq_get+0x58/0xb8 [mac80211])
      [<bf12d694>] (ieee80211_ap_probereq_get+0x0/0xb8 [mac80211]) from [<bf19cd04>] (wl1271_cmd_build_ap_probe_req+0x30/0xf8 [wl12xx])
       r4:cd007440
      [<bf19ccd4>] (wl1271_cmd_build_ap_probe_req+0x0/0xf8 [wl12xx]) from [<bf1995f4>] (wl1271_op_bss_info_changed+0x4c4/0x808 [wl12xx])
       r5:cd007440 r4:000003b4
      [<bf199130>] (wl1271_op_bss_info_changed+0x0/0x808 [wl12xx]) from [<bf122168>] (ieee80211_bss_info_change_notify+0x1a4/0x1f8 [mac80211])
      [<bf121fc4>] (ieee80211_bss_info_change_notify+0x0/0x1f8 [mac80211]) from [<bf141e80>] (ieee80211_reconfig+0x4d0/0x668 [mac80211])
       r8:cf0eeea4 r7:cd00671c r6:00000000 r5:cd006460 r4:cf1394a0
      [<bf1419b0>] (ieee80211_reconfig+0x0/0x668 [mac80211]) from [<bf137dd4>] (ieee80211_resume+0x60/0x70 [mac80211])
      [<bf137d74>] (ieee80211_resume+0x0/0x70 [mac80211]) from [<bf0eb930>] (wiphy_resume+0x6c/0x7c [cfg80211])
       r5:cd006248 r4:cd006110
      [<bf0eb8c4>] (wiphy_resume+0x0/0x7c [cfg80211]) from [<c0241024>] (legacy_resume+0x38/0x70)
       r7:00000000 r6:00000000 r5:cd006248 r4:cd0062fc
      [<c0240fec>] (legacy_resume+0x0/0x70) from [<c0241478>] (device_resume+0x168/0x1a0)
       r8:c04ca8d8 r7:cd00627c r6:00000010 r5:cd006248 r4:cd0062fc
      [<c0241310>] (device_resume+0x0/0x1a0) from [<c0241600>] (dpm_resume_end+0xf8/0x3bc)
       r7:00000000 r6:00000005 r5:cd006248 r4:cd0062fc
      [<c0241508>] (dpm_resume_end+0x0/0x3bc) from [<c00b2a24>] (suspend_devices_and_enter+0x1b0/0x204)
      [<c00b2874>] (suspend_devices_and_enter+0x0/0x204) from [<c00b2b68>] (enter_state+0xf0/0x148)
       r7:c037e978 r6:00000003 r5:c043d807 r4:00000000
      [<c00b2a78>] (enter_state+0x0/0x148) from [<c00b20a4>] (state_store+0xa4/0xcc)
       r7:c037e978 r6:00000003 r5:00000003 r4:c043d807
      [<c00b2000>] (state_store+0x0/0xcc) from [<c01fc90c>] (kobj_attr_store+0x20/0x24)
      [<c01fc8ec>] (kobj_attr_store+0x0/0x24) from [<c0157120>] (sysfs_write_file+0x11c/0x150)
      [<c0157004>] (sysfs_write_file+0x0/0x150) from [<c0100f84>] (vfs_write+0xc0/0x14c)
      [<c0100ec4>] (vfs_write+0x0/0x14c) from [<c01010e4>] (sys_write+0x4c/0x78)
       r8:40126000 r7:00000004 r6:cf1a7c80 r5:00000000 r4:00000000
      [<c0101098>] (sys_write+0x0/0x78) from [<c00500c0>] (ret_fast_syscall+0x0/0x30)
       r8:c00502c8 r7:00000004 r6:403525e8 r5:40126000 r4:00000004
      Signed-off-by: NEliad Peller <eliad@wizery.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      a7b545f7
    • S
      iwl3945: remove plcp check · c91d0155
      Stanislaw Gruszka 提交于
      Patch fixes:
      https://bugzilla.redhat.com/show_bug.cgi?id=654599
      
      Many users report very low speed problem on 3945 devices,
      this patch fixes problem, but only for some of them.
      
      For unknown reason, sometimes after hw scanning, device is not able
      to receive frames at high rate. Since plcp health check may request
      hw scan to "reset radio", performance problem start to be observable
      after update kernel to .35, where plcp check was introduced.
      
      Bug reporter confirmed that removing plcp check fixed problem for him.
      Reported-and-tested-by: NSilvioTO <silviotoya@yahoo.it>
      Cc: stable@kernel.org  # 2.6.35+
      Signed-off-by: NStanislaw Gruszka <sgruszka@redhat.com>
      Acked-by: NWey-Yi Guy <wey-yi.w.guy@intel.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      c91d0155
    • J
  2. 08 2月, 2011 3 次提交
  3. 05 2月, 2011 2 次提交
    • M
      ath9k: Fix possible double free of PAPRD skb's · 9cf04dcc
      Mohammed Shafi Shajakhan 提交于
      This patch reverts the following commit
      ath9k: remove bfs_paprd_timestamp from struct ath_buf_state
      
      Under high interference/noisy environment conditions where PAPRD frames
      fails heavily introduces a possibility of double freeing skb's and causes
      kernel panic after some time.This patch reverts back to the original approach
      of using paprd_timestamp before freeing the PAPRD frame skb's
      
      [  194.193705] Pid: 0, comm: swapper Tainted: G      D WC
      2.6.35-22-generic #33-Ubuntu
      [  194.193712] Call Trace:
      [  194.193722]  [<c05c6468>] ? printk+0x2d/0x35
      [  194.193732]  [<c05c63c3>] panic+0x5a/0xd2
      [  194.193741]  [<c05ca3ed>] oops_end+0xcd/0xd0
      [  194.193750]  [<c0105f74>] die+0x54/0x80
      [  194.193758]  [<c05c9a16>] do_trap+0x96/0xc0
      [  194.193837]  [<c0103fb0>] ? do_invalid_op+0x0/0xa0
      [  194.193846]  [<c010403b>] do_invalid_op+0x8b/0xa0
      [  194.193856]  [<c020bd4c>] ? kfree+0xec/0xf0
      [  194.193866]  [<c012ce18>] ? default_spin_lock_flags+0x8/0x10
      [  194.193877]  [<c01de47a>] ? free_one_page+0x12a/0x2d0
      [  194.193888]  [<c01e04dc>] ? __free_pages+0x1c/0x40
      [  194.193897]  [<c05c97a7>] error_code+0x73/0x78
      [  194.193906]  [<c020bd4c>] ? kfree+0xec/0xf0
      [  194.193915]  [<c04ecdd0>] ? skb_release_data+0x70/0xa0
      [  194.193924]  [<c04ecdd0>] skb_release_data+0x70/0xa0
      [  194.193933]  [<c04ec997>] __kfree_skb+0x17/0x90
      [  194.193941]  [<c04eca31>] consume_skb+0x21/0x40
      [  194.193964]  [<f85e0b70>] ieee80211_tx_status+0x760/0x860 [mac80211]
      [  194.193979]  [<f85caddf>] ath_tx_complete_buf+0x1bf/0x2c0 [ath9k]
      [  194.193988]  [<c05c8b9f>] ? _raw_spin_lock_irqsave+0x2f/0x50
      [  194.193997]  [<c04ec40e>] ? skb_queue_tail+0x3e/0x50
      [  194.194010]  [<f85cc803>] ath_tx_complete_aggr+0x823/0x940 [ath9k]
      [  194.194021]  [<c0108a28>] ? sched_clock+0x8/0x10
      [  194.194030]  [<c016bf14>] ? sched_clock_local+0xa4/0x180
      [  194.194040]  [<c0139f57>] ? enqueue_sleeper+0x1e7/0x2b0
      [  194.194051]  [<c013a194>] ? enqueue_entity+0x174/0x200
      [  194.194064]  [<f85ce83d>] ath_tx_edma_tasklet+0x2bd/0x3b0 [ath9k]
      [  194.194074]  [<c05c8b9f>] ? _raw_spin_lock_irqsave+0x2f/0x50
      [  194.194088]  [<f85c7b9f>] ath9k_tasklet+0x9f/0x190 [ath9k]
      [  194.194097]  [<c01505d7>] tasklet_action+0xa7/0xb0
      [  194.194107]  [<c015127c>] __do_softirq+0x9c/0x1b0
      [  194.194117]  [<c01a7f64>] ? irq_to_desc+0x14/0x20
      [  194.194126]  [<c0124fc4>] ? ack_apic_level+0x64/0x1f0
      [  194.194136]  [<c01513d5>] do_softirq+0x45/0x50
      [  194.194145]  [<c0151545>] irq_exit+0x65/0x70
      [  194.194153]  [<c05cf665>] do_IRQ+0x55/0xc0
      [  194.194162]  [<c016a6c7>] ? hrtimer_start+0x27/0x30
      [  194.194171]  [<c0103630>] common_interrupt+0x30/0x38
      [  194.194181]  [<c012c21a>] ? native_safe_halt+0xa/0x10
      [  194.194268]  [<c010a2f9>] default_idle+0x49/0xb0
      [  194.194277]  [<c0101fcc>] cpu_idle+0x8c/0xd0
      [  194.194286]  [<c05b2431>] rest_init+0x71/0x80
      [  194.194295]  [<c081981a>] start_kernel+0x36e/0x374
      [  194.194305]  [<c08199dd>] ? pass_all_bootoptions+0x0/0xa
      [  194.194314]  [<c08190d7>] i386_start_kernel+0xd7/0xdf
      [  194.194364] panic occurred, switching back to text console
      Signed-off-by: NMohammed Shafi Shajakhan <mshajakhan@atheros.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      9cf04dcc
    • C
      carl9170: fix typo in PS code · 5820de53
      Christian Lamparter 提交于
      This patch fixes a off-by-one bug which bugged
      the driver's PS-POLL capability.
      
      Cc: <stable@kernel.org>
      Signed-off-by: NChristian Lamparter <chunkeey@googlemail.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      5820de53
  4. 04 2月, 2011 1 次提交
  5. 03 2月, 2011 2 次提交
  6. 02 2月, 2011 2 次提交
  7. 01 2月, 2011 1 次提交
  8. 29 1月, 2011 2 次提交
    • R
      ath9k: Fix power save usage count imbalance on deinit · c7c18060
      Rajkumar Manoharan 提交于
      While unloading the driver, the ps_usecount is incremented
      before configuring gpio registers in deinit_device.
      But it is failed to restore the ps_usecount after that.
      The problem is that the chip is forcibly moved to FULL SLEEP
      by radio_disable when mac80211 is reporting as idle
      though ps_usecount is not zero.
      
      This patch retores ps_usecount properly and ensures that
      the chip is always moved to full sleep only if ps usage
      count is zero which also helps in debugging deadbeef on
      multivif case. And also fixes the following warning.
      
      ath: DMA failed to stop in 10 ms AR_CR=0xdeadbeef AR_DIAG_SW=0xdeadbeef
      ath: Could not stop RX, we could be confusing the DMA engine when we
      start RX up
      ------------[ cut here ]------------
      WARNING: at drivers/net/wireless/ath/ath9k/recv.c:536
      ath_stoprecv+0xf4/0x100 [ath9k]()
      
      Cc: stable@kernel.org
      Cc: Paul Stewart <pstew@google.com>
      Signed-off-by: NRajkumar Manoharan <rmanoharan@atheros.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      c7c18060
    • R
      ath9k_hw: Fix system hang when resuming from S3/S4 · 5b64aa72
      Rajkumar Manoharan 提交于
      The bit 6 & 7 of AR_WA (0x4004) should be enabled only
      for the chips that are supporting L0s functionality
      while resuming back from S3/S4.
      
      Enabling these bits for AR9280 is causing system hang
      within a few S3/S4-resume cycles.
      
      Cc: stable@kernel.org
      Cc: Jack Lee <jlee@atheros.com>
      Signed-off-by: NRajkumar Manoharan <rmanoharan@atheros.com>
      Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>
      5b64aa72
  9. 28 1月, 2011 6 次提交
  10. 27 1月, 2011 1 次提交
  11. 26 1月, 2011 3 次提交
  12. 22 1月, 2011 4 次提交
  13. 20 1月, 2011 9 次提交
  14. 19 1月, 2011 1 次提交