From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from buildserver.ru.mvista.com (unknown [85.21.88.6]) by ozlabs.org (Postfix) with ESMTP id B7704DDFC5 for ; Fri, 3 Oct 2008 01:18:54 +1000 (EST) Date: Thu, 2 Oct 2008 19:18:52 +0400 From: Anton Vorontsov To: Kumar Gala Subject: [PATCH] powerpc/83xx: don't probe broken PCI on mpc837x_mds boards Message-ID: <20081002151852.GA8823@oksana.dev.rtsoft.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1251 Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , In the standalone setup the board's CPLD disables the PCI internal arbiter, thus any access to the PCI bus will hang the board. When there is no PCI arbiter on the bus the u-boot marks the PCI bus as broken and we should not try to probe it. Signed-off-by: Anton Vorontsov --- arch/powerpc/platforms/83xx/mpc837x_mds.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/platforms/83xx/mpc837x_mds.c b/arch/powerpc/platforms/83xx/mpc837x_mds.c index be62de2..8bb13c8 100644 --- a/arch/powerpc/platforms/83xx/mpc837x_mds.c +++ b/arch/powerpc/platforms/83xx/mpc837x_mds.c @@ -85,8 +85,14 @@ static void __init mpc837x_mds_setup_arch(void) ppc_md.progress("mpc837x_mds_setup_arch()", 0); #ifdef CONFIG_PCI - for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") + for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") { + if (!of_device_is_available(np)) { + pr_warning("%s: disabled by the firmware.\n", + np->full_name); + continue; + } mpc83xx_add_bridge(np); + } #endif mpc837xmds_usb_cfg(); } -- 1.5.6.3