From 294bc611abab43e83bf14d85c493e77ceb364f2e Mon Sep 17 00:00:00 2001 From: Andrea Merello Date: Fri, 4 Apr 2014 18:25:51 +0200 Subject: [PATCH] rtl8180: be paranoid in stopping unused queues. HW should never attempt to perform DMA for unused queues. For rtl8187se this is ensured by setting a dedicated register at init time, before enabling TX. In rtl8180/5 the register is only written at the first TX (because in rtl8180/5 it serves also to kick DMA for used queues). This should be enough, but it's worth to add a register write at init time, before enabling TX. Signed-off-by: Andrea Merello Signed-off-by: John W. Linville --- drivers/net/wireless/rtl818x/rtl8180/dev.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/rtl818x/rtl8180/dev.c b/drivers/net/wireless/rtl818x/rtl8180/dev.c index cb8275fe6cda..50d69b13f984 100644 --- a/drivers/net/wireless/rtl818x/rtl8180/dev.c +++ b/drivers/net/wireless/rtl818x/rtl8180/dev.c @@ -910,7 +910,10 @@ static int rtl8180_init_hw(struct ieee80211_hw *dev) reg32 &= 0x00ffff00; reg32 |= 0xb8000054; rtl818x_iowrite32(priv, &priv->map->RF_PARA, reg32); - } + } else + /* stop unused queus (no dma alloc) */ + rtl818x_iowrite8(priv, &priv->map->TX_DMA_POLLING, + (1<<1) | (1<<2)); priv->rf->init(dev);