Thread (34 messages) read the whole thread 34 messages, 8 authors, 2011-11-03

Re: [RFC PATCH 11/17] sh_eth: Don't unnecessarily reset the PHY

From: Moffett, Kyle D <hidden>
Date: 2011-10-25 16:32:28
Also in: lkml

On Oct 25, 2011, at 07:11, Yoshihiro Shimoda wrote:
2011/10/21 6:00, Kyle Moffett wrote:
quoted
Signed-off-by: Kyle Moffett <redacted>
---
drivers/net/sh_eth.c |   19 +------------------
1 files changed, 1 insertions(+), 18 deletions(-)
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index 1c1666e..7ef4378 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -1235,23 +1235,6 @@ static int sh_eth_phy_init(struct net_device *ndev)
	return 0;
}

-/* PHY control start function */
-static int sh_eth_phy_start(struct net_device *ndev)
-{
-	struct sh_eth_private *mdp = netdev_priv(ndev);
-	int ret;
-
-	ret = sh_eth_phy_init(ndev);
-	if (ret)
-		return ret;
-
-	/* reset phy - this also wakes it from PDOWN */
-	phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
-	phy_start(mdp->phydev);
I think that the driver needs the phy_start().
So, I removed the phy_write() only. Then, the driver could work correctly.

Therefore, I would to remove the following code only.
Do you think about this?
quoted
-	/* reset phy - this also wakes it from PDOWN */
-	phy_write(mdp->phydev, MII_BMCR, BMCR_RESET);
You're right, sorry about that.  I think I mis-merged this when I rebased
from a much earlier commit.  The simple removal of the BMCR_RESET write
should achieve what I was intending.

Cheers,
Kyle Moffett

--
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I'm keeping a blog here: http://pureperl.blogspot.com/
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