[RFC PATCH 0/3] PCI: generate proper configuration access cycles

Inspired by Russell King's patch[1], I found some pci hosts also have the same issue of "reading 32-bits from the command register, modifying the command register, and then writing it back has the effect of clearing any status bits that were indicating at that time" as pointed out by Russell. Fix

[RFC PATCH 0/3] PCI: generate proper configuration access cycles

Inspired by Russell King's patch[1], I found some pci hosts also have the same issue of "reading 32-bits from the command register, modifying the command register, and then writing it back has the effect of clearing any status bits that were indicating at that time" as pointed out by Russell. Fix