From: Nye Liu <nyet@nyet.org>
To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
netdev@vger.kernel.org
Subject: Re: [PATCH] FS_ENET: Don't attempt to set mii_speed when fec_inf is null
Date: Fri, 27 Jun 2008 15:07:49 -0700 [thread overview]
Message-ID: <20080627220749.GA3046@curtisfong.org> (raw)
In-Reply-To: <48655BAC.8080800@ru.mvista.com>
Sorry!
diff --git a/drivers/net/fs_enet/mac-fec.c b/drivers/net/fs_enet/mac-fec.c
index 8a311d1..7359068 100644
--- a/drivers/net/fs_enet/mac-fec.c
+++ b/drivers/net/fs_enet/mac-fec.c
@@ -328,7 +328,8 @@ static void restart(struct net_device *dev)
/*
* Set MII speed.
*/
- FW(fecp, mii_speed, fec_inf->mii_speed);
+ if (fec_inf)
+ FW(fecp, mii_speed, fec_inf->mii_speed);
/*
* Clear any outstanding interrupt.
On Sat, Jun 28, 2008 at 01:29:16AM +0400, Sergei Shtylyov wrote:
> Hello.
>
> Nye Liu wrote:
>> From: Nye Liu <nyet@mrv.com>
>>
>> When using CONFIG_FIXED_PHY, fec_inf (fep->phydev->bus->priv) is NULL in
>> fs_enet/mac-fec.c restart(). Dereferencing fec_inf when trying to set the
>> mii_speed causes a kernel oops.
>>
>> Signed-off-by: Nye Liu <nyet@mrv.com>
>>
>> ---
>>
>> diff --git a/drivers/net/fs_enet/mac-fec.c b/drivers/net/fs_enet/mac-fec.c
>> index 8a311d1..350bc73 100644
>> --- a/drivers/net/fs_enet/mac-fec.c
>> +++ b/drivers/net/fs_enet/mac-fec.c
>> @@ -328,7 +328,8 @@ static void restart(struct net_device *dev)
>> /*
>> * Set MII speed.
>> */
>> - FW(fecp, mii_speed, fec_inf->mii_speed);
>> + if (fec_inf)
>> + FW(fecp, mii_speed, fec_inf->mii_speed);
>>
>
> Alas, Your patch is whitespace damaged.
>
>
> WBR, Sergei
>
>
next prev parent reply other threads:[~2008-06-27 22:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-27 19:26 [PATCH] FS_ENET: Don't attempt to set mii_speed when fec_inf is null Nye Liu
2008-06-27 21:29 ` Sergei Shtylyov
2008-06-27 22:07 ` Nye Liu [this message]
2008-06-27 22:09 ` Nye Liu
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