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From: Darren Salt <linux@youmustbejoking.demon.co.uk>
To: gregkh@suse.de, stable@kernel.org
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: [PATCH 2.6.31, 2.6.32] Staging: rt2860sta: prevent a panic when disabling when associated
Date: Wed, 14 Oct 2009 02:19:22 +0100	[thread overview]
Message-ID: <50AF4AEA98%linux@youmustbejoking.demon.co.uk> (raw)

This fixes a panic which is triggered when the hardware "disappears" from
beneath the driver, i.e. when wireless is toggled off via Fn-F2 on various
EeePC models.

Ref. bug report http://bugzilla.kernel.org/show_bug.cgi?id=13390
          panic http://bugzilla.kernel.org/attachment.cgi?id=21928

Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>

--- a/drivers/staging/rt2860/common/cmm_data_2860.c	2009-09-09 23:13:59.000000000 +0100
+++ b/drivers/staging/rt2860/common/cmm_data_2860.c	2009-10-13 02:07:32.136049782 +0100
@@ -363,6 +363,8 @@ int RtmpPCIMgmtKickOut(
 	ULONG			SwIdx = pAd->MgmtRing.TxCpuIdx;
 
 	pTxD  = (PTXD_STRUC) pAd->MgmtRing.Cell[SwIdx].AllocVa;
+	if (!pTxD)
+		return 0;
 
 	pAd->MgmtRing.Cell[SwIdx].pNdisPacket = pPacket;
 	pAd->MgmtRing.Cell[SwIdx].pNextNdisPacket = NULL;

-- 
| Darren Salt            | linux at youmustbejoking | nr. Ashington, | Doon
| using Debian GNU/Linux | or ds    ,demon,co,uk    | Northumberland | Army
| + Buy local produce. Try to walk or cycle. TRANSPORT CAUSES GLOBAL WARMING.

Please do not shoot the pianist. He is doing his best.

                 reply	other threads:[~2009-10-14  2:28 UTC|newest]

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