lkml.org 
[lkml]   [2013]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 092/118] iwlwifi: dvm: don't send zeroed LQ cmd
    Date
    3.5.7.12 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

    commit 63b77bf489881747c5118476918cc8c29378ee63 upstream.

    When the stations are being restored because of unassoc
    RXON, the LQ cmd may not have been initialized because it
    is initialized only after association.
    Sending zeroed LQ_CMD makes the fw unhappy: it raises
    SYSASSERT_2078.

    Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
    Reviewed-by: Johannes Berg <johannes.berg@intel.com>
    [move zero_lq and make static const]
    Signed-off-by: Johannes Berg <johannes.berg@intel.com>
    [ luis: backport to 3.5:
    - file rename: dvm/sta.c -> iwl-agn-sta.c ]
    Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
    ---
    drivers/net/wireless/iwlwifi/iwl-agn-sta.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-sta.c b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
    index 287fdd0..b4f0661 100644
    --- a/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
    +++ b/drivers/net/wireless/iwlwifi/iwl-agn-sta.c
    @@ -723,6 +723,7 @@ void iwl_clear_ucode_stations(struct iwl_priv *priv,
    void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
    {
    struct iwl_addsta_cmd sta_cmd;
    + static const struct iwl_link_quality_cmd zero_lq = {};
    struct iwl_link_quality_cmd lq;
    int i;
    bool found = false;
    @@ -761,7 +762,9 @@ void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
    else
    memcpy(&lq, priv->stations[i].lq,
    sizeof(struct iwl_link_quality_cmd));
    - send_lq = true;
    +
    + if (!memcmp(&lq, &zero_lq, sizeof(lq)))
    + send_lq = true;
    }
    spin_unlock_bh(&priv->sta_lock);
    ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
    --
    1.8.1.2


    \
     
     \ /
      Last update: 2013-05-07 17:21    [W:4.034 / U:0.044 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site