From: Zhang Wei <wei.zhang@freescale.com>
To: paulus@samba.org, galak@kernel.crashing.org
Cc: linuxppc-dev@ozlabs.org
Subject: [PATCH] Fix the PCI-Ex link training bug on MPC8641HPCN board.
Date: Tue, 10 Jul 2007 14:34:12 +0800 [thread overview]
Message-ID: <11840492523488-git-send-email-wei.zhang@freescale.com> (raw)
If the PCI-Ex hose link training is failed, the kernel will halt at the
PCI scan process on MPC8641HPCN board.
This patch will remove and free the hose from PCI host list if the
PCI hose link training is failed.
Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
---
arch/powerpc/platforms/86xx/pci.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/platforms/86xx/pci.c b/arch/powerpc/platforms/86xx/pci.c
index 73cd5b0..0b7835c 100644
--- a/arch/powerpc/platforms/86xx/pci.c
+++ b/arch/powerpc/platforms/86xx/pci.c
@@ -210,8 +210,10 @@ int __init mpc86xx_add_bridge(struct device_node *dev)
/* Probe the hose link training status */
early_read_config_word(hose, 0, 0, PCIE_LTSSM, &val);
- if (val < PCIE_LTSSM_L0)
+ if (val < PCIE_LTSSM_L0) {
+ pcibios_free_controller(hose);
return -ENXIO;
+ }
/* Setup the PCIE host controller. */
mpc86xx_setup_pcie(hose, rsrc.start, rsrc.end - rsrc.start + 1);
--
1.5.1
next reply other threads:[~2007-07-10 6:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-10 6:34 Zhang Wei [this message]
2007-07-10 14:36 ` [PATCH] Fix the PCI-Ex link training bug on MPC8641HPCN board Kumar Gala
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