From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Renzmann Subject: Re: [PATCH 2.4.31] e1000: unlock tx_lock before return Date: Tue, 14 Jun 2005 08:51:58 +0200 Message-ID: <42AE7E8E.4030909@otaku42.de> References: <42ADE90A.8080804@otaku42.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="------------050804000009050602030509" Cc: linux-kernel@vger.kernel.org Return-path: To: netdev@vger.kernel.org In-Reply-To: <42ADE90A.8080804@otaku42.de> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org This is a multi-part message in MIME format. --------------050804000009050602030509 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi all. Sorry for replying to my own post. I rediffed the patch to make it a -p1 patch as described by DaveM in another (netdev) thread. Also CC'd lkml. lkml'ers, please CC replies to me, since I'm not subscribed. Michael Renzmann wrote: > It may happen that the e1000 driver returns from e1000_xmit_frame() > while still holding the tx_lock spinlock. This is at least true for the > version that comes with kernel 2.4.31. The problem doesn't exist in > 2.6.11.12. > > The attached patch applies to vanilla 2.4.31. I couldn't test the patch > myself (no e1000 available), but it's a trivial patch and thus it's > expected to work without problems. > > Signed-off-by: Michael Renzmann --------------050804000009050602030509 Content-Type: text/x-patch; name="e1000-2.4.31-unlock_before_return.patch" Content-Transfer-Encoding: 7bit Content-Disposition: inline; filename="e1000-2.4.31-unlock_before_return.patch" --- a/drivers/net/e1000/e1000_main.c 2005-04-04 03:42:19.000000000 +0200 +++ b/drivers/net/e1000/e1000_main.c 2005-06-13 21:39:58.000000000 +0200 @@ -1955,8 +1955,8 @@ if(unlikely(e1000_82547_fifo_workaround(adapter, skb))) { netif_stop_queue(netdev); mod_timer(&adapter->tx_fifo_stall_timer, jiffies); - return 1; spin_unlock_irqrestore(&adapter->tx_lock, flags); + return 1; } } --------------050804000009050602030509--