[PATCH 0/4] PCI: fix cardbus and sriov regressions

From: Ram Pai
Date: Mon Jun 20 2011 - 18:47:37 EST


The following patch-set fixes regressions caused by:

the commit "PCI: update bridge resources to get more big ranges when allocating space (again)"
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=da7822e5ad71ec9b745b412639f1e5e0ba795a20

patch 1/4: correctly calculates the additional resource size for hotplug bridges.
patch 2/4: ability to resize assigned pci-resource.
patch 3/4: makes SRIOV BARs a nice-to-have resource, which means resources will
be attempted to assign, but not gauranteed to succeed.
patch 4/4: makes cardbus bridge resources nice-to-have resource.


The regression was caused because on some platforms with limited i/o and mem
resources, the nice-to-have resources were allocated ahead of
absolutely-required resources, thus starving the latter. The patchset will
ensure that all the mandatory resource requirements are satisfied before any
nice-to-have resource requirements are satisfied.
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