[PATCH v8 51/61] PCI: Allow bridge optional only io port resource required size to be 0

2015-10-27 Thread Yinghai Lu
When there is no child device under the non hotplug bridge, We can use 0 for required size, and do not use old size as required size. That will save some io port range for other bridges, as BIOS could do some partial assign, and we want to use those not used io port range. When there is child

[PATCH v8 51/61] PCI: Allow bridge optional only io port resource required size to be 0

2015-10-27 Thread Yinghai Lu
When there is no child device under the non hotplug bridge, We can use 0 for required size, and do not use old size as required size. That will save some io port range for other bridges, as BIOS could do some partial assign, and we want to use those not used io port range. When there is child