Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=626668...
Commit: 62666828bae7057835d982367e98716a1bd0fd40
Parent: 5c091193e4a12e88930a0bb3ed3632c51e926a76
Author: Anton Vorontsov <avorontsov@ru.mvista.com>
AuthorDate: Mon Oct 6 21:08:39 2008 +0400
Committer: Kumar Gala <galak@kernel.crashing.org>
CommitDate: Mon Oct 13 11:09:58 2008 -0500
powerpc/83xx: don't probe broken PCI on mpc837x_mds boards
In the standalone setup the board's CPLD disables the PCI internal
arbiter, thus any access to the PCI bus will hang the board.
The common way to disable particular devices in the device tree is to
put the "status" property with any value other than "ok" or "okay"
into the device node we want to disable.
So, when there is no PCI arbiter on the bus the u-boot adds status =
"broken (no arbiter)" property into the PCI controller's node, and so
marks the PCI controller as unavailable.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---
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();
}
--
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