Commit 294bc611 authored Apr 04, 2014 by Andrea Merello Committed by John W. Linville Apr 22, 2014

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 <andrea.merello@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 6bcb20c7

drivers/net/wireless/rtl818x/rtl8180/dev.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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);