Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 330ba603 authored by Andrew Lunn's avatar Andrew Lunn Committed by Greg Kroah-Hartman
Browse files

net: freescale: fec: Fix ethtool -d runtime PM 



[ Upstream commit c72a0bc0aa19f49160330a65ab77184b5b7d131b ]

In order to dump the FECs registers the clocks have to be ticking,
otherwise a data abort occurs.  Add calls to runtime PM so they are
enabled and later disabled.

Fixes: e8fcfcd5 ("net: fec: optimize the clock management to save power")
Reported-by: default avatarChris Healy <Chris.Healy@zii.aero>
Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d9ffa106

drivers/net/ethernet/freescale/fec_main.c

+9 −0
Original line number Diff line number Diff line
@@ -2199,8 +2199,14 @@ static void fec_enet_get_regs(struct net_device *ndev, 
{

	struct fec_enet_private *fep = netdev_priv(ndev);

	u32 __iomem *theregs = (u32 __iomem *)fep->hwp;

	struct device *dev = &fep->pdev->dev;

	u32 *buf = (u32 *)regbuf;

	u32 i, off;

	int ret;



	ret = pm_runtime_get_sync(dev);

	if (ret < 0)

		return;



	regs->version = fec_enet_register_version;
@@ -2216,6 +2222,9 @@ static void fec_enet_get_regs(struct net_device *ndev, 
		off >>= 2;

		buf[off] = readl(&theregs[off]);

	}



	pm_runtime_mark_last_busy(dev);

	pm_runtime_put_autosuspend(dev);

}



static int fec_enet_get_ts_info(struct net_device *ndev,