linux-kernel - [patch 1/1] ppc: Possible bug fix for FCC driver

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Message-ID: <00B1F4365DDBE745B091C67A1CCFCB43070CE21E@zctfhxm1>
Date:	Mon, 5 Mar 2007 11:12:54 +0100
From:	"Cedric Pontois" <cpontois@...tel.com>
To:	<dmalek@....net>, <leoli@...escale.com>
Cc:	<linux-kernel@...r.kernel.org>
Subject: [patch 1/1] ppc: Possible bug fix for FCC driver

From: Cedric Pontois <cpontois@...tel.com>

We use a kernel 2.6.14 on PPC platform (MPC 8555). The FCC driver works
well with a 100Mbps link. But it doesn't with a 10Mbps link. To solve
it, I modified the GFMR register init: removed TCI bit and set CRC32 bit
instead of. 

       Developer's Certificate of Origin 1.1

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        (b) The contribution is based upon previous work that, to the
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	Signed-off-by: Cedric Pontois <cpontois@...tel.com>

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

diff -ruN pa-original/arch/ppc/8260_io/fcc_enet.c
pa-patched/arch/ppc/8260_io/fcc_enet.c
--- pa-original/arch/ppc/8260_io/fcc_enet.c	2007-03-02
14:57:07.000197000 +0100
+++ pa-patched/arch/ppc/8260_io/fcc_enet.c	2007-03-02
14:57:08.000038000 +0100
@@ -2232,7 +2232,7 @@
 
 	/* Set GFMR to enable Ethernet operating mode.
 	 */
-	fccp->fcc_gfmr = (FCC_GFMR_TCI | FCC_GFMR_MODE_ENET);
+	fccp->fcc_gfmr = (FCC_GFMR_TCRC_32 | FCC_GFMR_MODE_ENET);
 
 	/* Set sync/delimiters.
 	*/

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

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