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staging: vt6655: lock MACvWriteBSSIDAddress.

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This function selects page 1 and cause intermittent problems on
interrupt handler.

lock call with spin_lock_irqsave.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Cc: <stable@vger.kernel.org> # v3.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Malcolm Priestley 2015-04-21 22:33:02 +01:00 committed by Greg Kroah-Hartman
parent 032ed34a84
commit 664a5c1d1e
1 changed files with 8 additions and 1 deletions
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9
drivers/staging/vt6655/device_main.c
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@ -1417,9 +1417,16 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
priv->current_aid = conf->aid; priv->current_aid = conf->aid;
if (changed & BSS_CHANGED_BSSID) if (changed & BSS_CHANGED_BSSID) {
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid); MACvWriteBSSIDAddress(priv->PortOffset, (u8 *)conf->bssid);
spin_unlock_irqrestore(&priv->lock, flags);
}
if (changed & BSS_CHANGED_BASIC_RATES) { if (changed & BSS_CHANGED_BASIC_RATES) {
priv->basic_rates = conf->basic_rates; priv->basic_rates = conf->basic_rates;