resources: when allocate_resource() fails, leave resource untouched
When "allocate_resource(root, new, size, ...)" fails, we currently clobber "new". This is inconvenient for the caller, who might care about the original contents of the resource. For example, when pci_bus_alloc_resource() fails, the "can't allocate mem resource %pR" message from pci_assign_resources() currently contains junk for the resource start/end. This patch delays the "new" update until we're about to return success. Acked-by:Linus Torvalds <torvalds@linux-foundation.org> Acked-by:
Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Jesse Barnes <jbarnes@virtuousgeek.org>
parent
03db42ad
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