diff options
| author | Stanislaw Gruszka <sgruszka@redhat.com> | 2016-12-19 13:52:57 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2016-12-30 15:03:41 +0300 |
| commit | c7d1c77781f468c639867d324d4e490139cd4c7f (patch) | |
| tree | 0800a783adfbd65b30a42d2bd91e59a759a91f33 /drivers/net/wireless/ralink/rt2x00/rt2x00mac.c | |
| parent | 31369c323ba0dc839d8a4e5a5727adc76814959c (diff) | |
| download | linux-c7d1c77781f468c639867d324d4e490139cd4c7f.tar.xz | |
rt2x00: add mutex to synchronize config and link tuner
Do not perform mac80211 config and link_tuner at the same time,
this can possibly result in wrong RF or BBP configuration.
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/ralink/rt2x00/rt2x00mac.c')
| -rw-r--r-- | drivers/net/wireless/ralink/rt2x00/rt2x00mac.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c index d4b50fb948ee..3cc1384ed2fc 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00mac.c @@ -320,6 +320,9 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) */ rt2x00queue_stop_queue(rt2x00dev->rx); + /* Do not race with with link tuner. */ + mutex_lock(&rt2x00dev->conf_mutex); + /* * When we've just turned on the radio, we want to reprogram * everything to ensure a consistent state @@ -335,6 +338,8 @@ int rt2x00mac_config(struct ieee80211_hw *hw, u32 changed) */ rt2x00lib_config_antenna(rt2x00dev, rt2x00dev->default_ant); + mutex_unlock(&rt2x00dev->conf_mutex); + /* Turn RX back on */ rt2x00queue_start_queue(rt2x00dev->rx); |