[PATCH v2] net/fec: fix pm to survive to suspend/resume
Eric Bénard
eric at eukrea.com
Sat May 29 16:04:50 EDT 2010
* in the actual driver, calling fec_stop and fec_enet_init doesn't
allow to have a working network interface at resume (where a
ifconfig down and up is required to recover the interface)
* by using fec_enet_close and fec_enet_open, this patch solves this
problem and handle the case where the link changed between suspend
and resume
* this patch also disable clock at suspend and reenable it at resume
Signed-off-by: Eric Bénard <eric at eukrea.com>
Cc: s.hauer at pengutronix.de
Cc: sshtylyov at mvista.com
Cc: linux-arm-kernel at lists.infradead.org
Cc: fabioestevam at yahoo.com
Cc: davem at davemloft.net
---
drivers/net/fec.c | 16 ++++++++--------
1 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/net/fec.c b/drivers/net/fec.c
index 9b4e8f7..40ffdb8 100644
--- a/drivers/net/fec.c
+++ b/drivers/net/fec.c
@@ -1975,10 +1975,9 @@ fec_suspend(struct platform_device *dev, pm_message_t state)
if (ndev) {
fep = netdev_priv(ndev);
- if (netif_running(ndev)) {
- netif_device_detach(ndev);
- fec_stop(ndev);
- }
+ if (netif_running(ndev))
+ fec_enet_close(ndev);
+ clk_disable(fep->clk);
}
return 0;
}
@@ -1987,12 +1986,13 @@ static int
fec_resume(struct platform_device *dev)
{
struct net_device *ndev = platform_get_drvdata(dev);
+ struct fec_enet_private *fep;
if (ndev) {
- if (netif_running(ndev)) {
- fec_enet_init(ndev, 0);
- netif_device_attach(ndev);
- }
+ fep = netdev_priv(ndev);
+ clk_enable(fep->clk);
+ if (netif_running(ndev))
+ fec_enet_open(ndev);
}
return 0;
}
--
1.6.3.3
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