linux-kernel - [patch 23/29] r8169: prevent RxFIFO induced loops in the irq handler.

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Date:	Thu, 10 Mar 2011 15:54:29 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Francois Romieu <romieu@...zoreil.com>,
	Ivan Vecera <ivecera@...hat.com>, Hayes <hayeswang@...ltek.com>
Subject: [patch 23/29] r8169: prevent RxFIFO induced loops in the irq handler.

2.6.37-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Francois Romieu <romieu@...zoreil.com>

commit f60ac8e7ab7cbb413a0131d5665b053f9f386526 upstream.

While the RxFIFO interruption is masked for most 8168, nothing prevents
it to appear in the irq status word. This is no excuse to crash.

Signed-off-by: Francois Romieu <romieu@...zoreil.com>
Cc: Ivan Vecera <ivecera@...hat.com>
Cc: Hayes <hayeswang@...ltek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/net/r8169.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -4613,6 +4613,14 @@ static irqreturn_t rtl8169_interrupt(int
 				netif_stop_queue(dev);
 				rtl8169_tx_timeout(dev);
 				goto done;
+			/* Testers needed. */
+			case RTL_GIGA_MAC_VER_17:
+			case RTL_GIGA_MAC_VER_19:
+			case RTL_GIGA_MAC_VER_20:
+			case RTL_GIGA_MAC_VER_21:
+			case RTL_GIGA_MAC_VER_23:
+			case RTL_GIGA_MAC_VER_24:
+			case RTL_GIGA_MAC_VER_27:
 			/* Experimental science. Pktgen proof. */
 			case RTL_GIGA_MAC_VER_12:
 			case RTL_GIGA_MAC_VER_25:


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