From 664a5c1d1e33cd89cb7883e8c74638cc482b5da7 Mon Sep 17 00:00:00 2001
From: Malcolm Priestley <tvboxspy@gmail.com>
Date: Tue, 21 Apr 2015 22:33:02 +0100
Subject: [PATCH] staging: vt6655: lock MACvWriteBSSIDAddress.
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>
---
drivers/staging/vt6655/device_main.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index b3860477eceb6..0343ae386f035 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1417,9 +1417,16 @@ static void vnt_bss_info_changed(struct ieee80211_hw *hw,
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);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+
if (changed & BSS_CHANGED_BASIC_RATES) {
priv->basic_rates = conf->basic_rates;
--
GitLab