Messages in this thread Patch in this message | | | Date | Wed, 12 Mar 2008 13:34:38 -0400 | From | Mark Lord <> | Subject | Re: [regression] pciehp hang on hp ia64 rx6600 |
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Alex Chiang wrote: > Hi Mark, Kristin, > > On my hp ia64 rx6600, 'modprobe pciehp' causes lockups and a > system hang on 2.6.25-rc4. My system often hangs when only pciehp > is loaded and my console is sitting idle, but I can accelerate > the hang 100% of the time by immediately doing a 'modprobe > acpiphp' right afterwards. ..
Does this patch fix things for you?
* * *
Invoke pciehp_enable_slot() at startup only when pciehp_force=1. Some HP equipment apparently cannot cope with it otherwise.
This restores the (previously working) 2.6.24 behaviour here, while allowing machines that need a kick to use pciehp_force=1.
Signed-off-by: Mark Lord <mlord@pobox.com> ---
--- linux-2.6.25-rc5-git2/drivers/pci/hotplug/pciehp_core.c 2008-03-12 13:21:46.000000000 -0400 +++ linux/drivers/pci/hotplug/pciehp_core.c 2008-03-12 13:23:54.000000000 -0400 @@ -467,7 +467,7 @@ t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset); t_slot->hpc_ops->get_adapter_status(t_slot, &value); /* Check if slot is occupied */ - if (value) { + if (value && pciehp_force) { rc = pciehp_enable_slot(t_slot); if (rc) /* -ENODEV: shouldn't happen, but deal with it */ value = 0;
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