diff options
| author | Douglas Anderson <dianders@chromium.org> | 2017-05-12 09:42:01 -0700 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2017-05-19 09:01:56 +0300 |
| commit | 09bdb65005515c97b29e0792bc6e5598d9e4035f (patch) | |
| tree | c0415ec497e5d3659d8e43ebcb871a452c733141 /drivers/net/wireless/marvell/mwifiex/11n.c | |
| parent | 90ad0be83676c82d9f1bfc1c1c3b3f61f3291017 (diff) | |
mwifiex: Add locking to mwifiex_11n_delba
The mwifiex_11n_delba() function walked the rx_reorder_tbl_ptr without
holding the lock, which was an obvious violation.
Grab the lock.
NOTE: we hold the lock while calling mwifiex_send_delba(). There's also
several callers in 11n_rxreorder.c that hold the lock and the comments
in the struct sound just like very other list/lock pair -- as if the
lock should definitely be help for all operations like this.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/marvell/mwifiex/11n.c')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/11n.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/11n.c b/drivers/net/wireless/marvell/mwifiex/11n.c index c75b6abf16a0..16c77c27f1b6 100644 --- a/drivers/net/wireless/marvell/mwifiex/11n.c +++ b/drivers/net/wireless/marvell/mwifiex/11n.c @@ -653,11 +653,13 @@ int mwifiex_send_delba(struct mwifiex_private *priv, int tid, u8 *peer_mac, void mwifiex_11n_delba(struct mwifiex_private *priv, int tid) { struct mwifiex_rx_reorder_tbl *rx_reor_tbl_ptr; + unsigned long flags; + spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); if (list_empty(&priv->rx_reorder_tbl_ptr)) { dev_dbg(priv->adapter->dev, "mwifiex_11n_delba: rx_reorder_tbl_ptr empty\n"); - return; + goto exit; } list_for_each_entry(rx_reor_tbl_ptr, &priv->rx_reorder_tbl_ptr, list) { @@ -666,9 +668,11 @@ void mwifiex_11n_delba(struct mwifiex_private *priv, int tid) "Send delba to tid=%d, %pM\n", tid, rx_reor_tbl_ptr->ta); mwifiex_send_delba(priv, tid, rx_reor_tbl_ptr->ta, 0); - return; + goto exit; } } +exit: + spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); } /* |