1. 01 Jun, 2019 7 commits
  2. 30 May, 2019 2 commits
  3. 28 May, 2019 5 commits
    • YueHaibing's avatar
      rtw88: Make some symbols static · 6aca0977
      YueHaibing authored
      Fix sparse warnings:
      
      drivers/net/wireless/realtek/rtw88/phy.c:851:4: warning: symbol 'rtw_cck_size' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/phy.c:852:4: warning: symbol 'rtw_ofdm_size' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/phy.c:853:4: warning: symbol 'rtw_ht_1s_size' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/phy.c:854:4: warning: symbol 'rtw_ht_2s_size' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/phy.c:855:4: warning: symbol 'rtw_vht_1s_size' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/phy.c:856:4: warning: symbol 'rtw_vht_2s_size' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/fw.c:11:6: warning: symbol 'rtw_fw_c2h_cmd_handle_ext' was not declared. Should it be static?
      drivers/net/wireless/realtek/rtw88/fw.c:50:6: warning: symbol 'rtw_fw_send_h2c_command' was not declared. Should it be static?
      Reported-by: default avatarHulk Robot <hulkci@huawei.com>
      Signed-off-by: default avatarYueHaibing <yuehaibing@huawei.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      6aca0977
    • Stanislaw Gruszka's avatar
      rtw88: avoid circular locking between local->iflist_mtx and rtwdev->mutex · 5b0efb4d
      Stanislaw Gruszka authored
      Remove circular lock dependency by using atomic version of interfaces
      iterate in watch_dog_work(), hence avoid taking local->iflist_mtx
      (rtw_vif_watch_dog_iter() only update some data, it can be called from
      atomic context). Fixes below LOCKDEP warning:
      
      [ 1157.219415] ======================================================
      [ 1157.225772] [ INFO: possible circular locking dependency detected ]
      [ 1157.232150] 3.10.0-1043.el7.sgruszka1.x86_64.debug #1 Not tainted
      [ 1157.238346] -------------------------------------------------------
      [ 1157.244635] kworker/u4:2/14490 is trying to acquire lock:
      [ 1157.250194]  (&rtwdev->mutex){+.+.+.}, at: [<ffffffffc098322b>] rtw_ops_config+0x2b/0x90 [rtw88]
      [ 1157.259151]
      but task is already holding lock:
      [ 1157.265085]  (&local->iflist_mtx){+.+...}, at: [<ffffffffc0b8ab7a>] ieee80211_mgd_probe_ap.part.28+0xca/0x160 [mac80211]
      [ 1157.276169]
      which lock already depends on the new lock.
      
      [ 1157.284488]
      the existing dependency chain (in reverse order) is:
      [ 1157.292101]
      -> #2 (&local->iflist_mtx){+.+...}:
      [ 1157.296919]        [<ffffffffbc741a29>] lock_acquire+0x99/0x1e0
      [ 1157.302955]        [<ffffffffbce72793>] mutex_lock_nested+0x93/0x410
      [ 1157.309416]        [<ffffffffc0b6038f>] ieee80211_iterate_interfaces+0x2f/0x60 [mac80211]
      [ 1157.317730]        [<ffffffffc09811ab>] rtw_watch_dog_work+0xcb/0x130 [rtw88]
      [ 1157.325003]        [<ffffffffbc6d77bc>] process_one_work+0x22c/0x720
      [ 1157.331481]        [<ffffffffbc6d7dd6>] worker_thread+0x126/0x3b0
      [ 1157.337589]        [<ffffffffbc6e107f>] kthread+0xef/0x100
      [ 1157.343260]        [<ffffffffbce848b7>] ret_from_fork_nospec_end+0x0/0x39
      [ 1157.350091]
      -> #1 ((&(&rtwdev->watch_dog_work)->work)){+.+...}:
      [ 1157.356314]        [<ffffffffbc741a29>] lock_acquire+0x99/0x1e0
      [ 1157.362427]        [<ffffffffbc6d570b>] flush_work+0x5b/0x310
      [ 1157.368287]        [<ffffffffbc6d740e>] __cancel_work_timer+0xae/0x170
      [ 1157.374940]        [<ffffffffbc6d7583>] cancel_delayed_work_sync+0x13/0x20
      [ 1157.381930]        [<ffffffffc0982b49>] rtw_core_stop+0x29/0x50 [rtw88]
      [ 1157.388679]        [<ffffffffc098bee6>] rtw_enter_ips+0x16/0x20 [rtw88]
      [ 1157.395428]        [<ffffffffc0983242>] rtw_ops_config+0x42/0x90 [rtw88]
      [ 1157.402173]        [<ffffffffc0b13343>] ieee80211_hw_config+0xc3/0x680 [mac80211]
      [ 1157.409854]        [<ffffffffc0b3925b>] ieee80211_do_open+0x69b/0x9c0 [mac80211]
      [ 1157.417418]        [<ffffffffc0b395e9>] ieee80211_open+0x69/0x70 [mac80211]
      [ 1157.424496]        [<ffffffffbcd03442>] __dev_open+0xe2/0x160
      [ 1157.430356]        [<ffffffffbcd03773>] __dev_change_flags+0xa3/0x180
      [ 1157.436922]        [<ffffffffbcd03879>] dev_change_flags+0x29/0x60
      [ 1157.443224]        [<ffffffffbcda14c4>] devinet_ioctl+0x794/0x890
      [ 1157.449331]        [<ffffffffbcda27b5>] inet_ioctl+0x75/0xa0
      [ 1157.455087]        [<ffffffffbccd54eb>] sock_do_ioctl+0x2b/0x60
      [ 1157.461178]        [<ffffffffbccd5753>] sock_ioctl+0x233/0x310
      [ 1157.467109]        [<ffffffffbc8bd820>] do_vfs_ioctl+0x410/0x6c0
      [ 1157.473233]        [<ffffffffbc8bdb71>] SyS_ioctl+0xa1/0xc0
      [ 1157.478914]        [<ffffffffbce84a5e>] system_call_fastpath+0x25/0x2a
      [ 1157.485569]
      -> #0 (&rtwdev->mutex){+.+.+.}:
      [ 1157.490022]        [<ffffffffbc7409d1>] __lock_acquire+0xec1/0x1630
      [ 1157.496305]        [<ffffffffbc741a29>] lock_acquire+0x99/0x1e0
      [ 1157.502413]        [<ffffffffbce72793>] mutex_lock_nested+0x93/0x410
      [ 1157.508890]        [<ffffffffc098322b>] rtw_ops_config+0x2b/0x90 [rtw88]
      [ 1157.515724]        [<ffffffffc0b13343>] ieee80211_hw_config+0xc3/0x680 [mac80211]
      [ 1157.523370]        [<ffffffffc0b8a4ca>] ieee80211_recalc_ps.part.27+0x9a/0x180 [mac80211]
      [ 1157.531685]        [<ffffffffc0b8abc5>] ieee80211_mgd_probe_ap.part.28+0x115/0x160 [mac80211]
      [ 1157.540353]        [<ffffffffc0b8b40d>] ieee80211_beacon_connection_loss_work+0x4d/0x80 [mac80211]
      [ 1157.549513]        [<ffffffffbc6d77bc>] process_one_work+0x22c/0x720
      [ 1157.555886]        [<ffffffffbc6d7dd6>] worker_thread+0x126/0x3b0
      [ 1157.562170]        [<ffffffffbc6e107f>] kthread+0xef/0x100
      [ 1157.567765]        [<ffffffffbce848b7>] ret_from_fork_nospec_end+0x0/0x39
      [ 1157.574579]
      other info that might help us debug this:
      
      [ 1157.582788] Chain exists of:
        &rtwdev->mutex --> (&(&rtwdev->watch_dog_work)->work) --> &local->iflist_mtx
      
      [ 1157.593024]  Possible unsafe locking scenario:
      
      [ 1157.599046]        CPU0                    CPU1
      [ 1157.603653]        ----                    ----
      [ 1157.608258]   lock(&local->iflist_mtx);
      [ 1157.612180]                                lock((&(&rtwdev->watch_dog_work)->work));
      [ 1157.620074]                                lock(&local->iflist_mtx);
      [ 1157.626555]   lock(&rtwdev->mutex);
      [ 1157.630124]
       *** DEADLOCK ***
      
      [ 1157.636148] 4 locks held by kworker/u4:2/14490:
      [ 1157.640755]  #0:  (%s#6){.+.+.+}, at: [<ffffffffbc6d774a>] process_one_work+0x1ba/0x720
      [ 1157.648965]  #1:  ((&ifmgd->beacon_connection_loss_work)){+.+.+.}, at: [<ffffffffbc6d774a>] process_one_work+0x1ba/0x720
      [ 1157.659950]  #2:  (&wdev->mtx){+.+.+.}, at: [<ffffffffc0b8aad5>] ieee80211_mgd_probe_ap.part.28+0x25/0x160 [mac80211]
      [ 1157.670901]  #3:  (&local->iflist_mtx){+.+...}, at: [<ffffffffc0b8ab7a>] ieee80211_mgd_probe_ap.part.28+0xca/0x160 [mac80211]
      [ 1157.682466]
      
      Fixes: e3037485 ("rtw88: new Realtek 802.11ac driver")
      Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
      Acked-by: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      5b0efb4d
    • Nathan Chancellor's avatar
      rsi: Properly initialize data in rsi_sdio_ta_reset · f57b5d85
      Nathan Chancellor authored
      When building with -Wuninitialized, Clang warns:
      
      drivers/net/wireless/rsi/rsi_91x_sdio.c:940:43: warning: variable 'data'
      is uninitialized when used here [-Wuninitialized]
              put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
                                                       ^~~~
      drivers/net/wireless/rsi/rsi_91x_sdio.c:930:10: note: initialize the
      variable 'data' to silence this warning
              u8 *data;
                      ^
                       = NULL
      1 warning generated.
      
      Using Clang's suggestion of initializing data to NULL wouldn't work out
      because data will be dereferenced by put_unaligned_le32. Use kzalloc to
      properly initialize data, which matches a couple of other places in this
      driver.
      
      Fixes: e5a1ecc9 ("rsi: add firmware loading for 9116 device")
      Link: https://github.com/ClangBuiltLinux/linux/issues/464Signed-off-by: default avatarNathan Chancellor <natechancellor@gmail.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      f57b5d85
    • Yan-Hsuan Chuang's avatar
      rtw88: fix unassigned rssi_level in rtw_sta_info · a24bad74
      Yan-Hsuan Chuang authored
      The new rssi_level should be stored in si, otherwise the rssi_level will
      never be updated and get a wrong RA mask, which is calculated by the
      rssi level
      
      If a wrong RA mask is chosen, the firmware will pick some *bad rates*.
      The most hurtful scene will be in *noisy environment*, such as office or
      public area with many APs and users.
      The latency would be high and the overall throughput would be only half
      or less.
      
      Tested in 2.4G in office area, with this patch the throughput increased
      from such as "1x Mbps -> 4x Mbps".
      Signed-off-by: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      a24bad74
    • Stanislaw Gruszka's avatar
      rtw88: fix subscript above array bounds compiler warning · 8a03447d
      Stanislaw Gruszka authored
      My compiler complains about:
      
      drivers/net/wireless/realtek/rtw88/phy.c: In function ‘rtw_phy_rf_power_2_rssi’:
      drivers/net/wireless/realtek/rtw88/phy.c:430:26: warning: array subscript is above array bounds [-Warray-bounds]
        linear = db_invert_table[i][j];
      
      According to comment power_db should be in range 1 ~ 96 .
      To fix add check for boundaries before access the array.
      Signed-off-by: default avatarStanislaw Gruszka <sgruszka@redhat.com>
      Acked-by: default avatarYan-Hsuan Chuang <yhchuang@realtek.com>
      Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
      8a03447d
  4. 27 May, 2019 6 commits
  5. 26 May, 2019 5 commits
  6. 25 May, 2019 7 commits
  7. 24 May, 2019 3 commits
  8. 23 May, 2019 5 commits