提交 42431dc2 编写于 作者: L Lothar Waßmann 提交者: David S. Miller

net/fec: preserve MII/RMII setting in fec_stop()

Additionally to setting the ETHER_EN bit in FEC_ECNTRL the MII/RMII
setting in FEC_R_CNTRL needs to be preserved to keep the MII interface
functional.
Signed-off-by: NLothar Waßmann <LW@KARO-electronics.de>
Tested-by: NShawn Guo <shawn.guo@linaro.org>
Acked-by: NShawn Guo <shawn.guo@linaro.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 589efdc7
......@@ -515,6 +515,7 @@ fec_stop(struct net_device *ndev)
struct fec_enet_private *fep = netdev_priv(ndev);
const struct platform_device_id *id_entry =
platform_get_device_id(fep->pdev);
u32 rmii_mode = readl(fep->hwp + FEC_R_CNTRL) & (1 << 8);
/* We cannot expect a graceful transmit stop without link !!! */
if (fep->link) {
......@@ -531,8 +532,10 @@ fec_stop(struct net_device *ndev)
writel(FEC_DEFAULT_IMASK, fep->hwp + FEC_IMASK);
/* We have to keep ENET enabled to have MII interrupt stay working */
if (id_entry->driver_data & FEC_QUIRK_ENET_MAC)
if (id_entry->driver_data & FEC_QUIRK_ENET_MAC) {
writel(2, fep->hwp + FEC_ECNTRL);
writel(rmii_mode, fep->hwp + FEC_R_CNTRL);
}
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册