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[ Upstream commit793908d60b] When allocating space for an endpoint function on a BAR with a fixed size, the size saved in 'struct pci_epf_bar.size' should be the fixed size as expected by pci_epc_set_bar(). However, if pci_epf_alloc_space() increased the allocation size to accommodate iATU alignment requirements, it previously saved the larger aligned size in .size, which broke pci_epc_set_bar(). To solve this, keep the fixed BAR size in .size and save the aligned size in a new .aligned_size for use when deallocating it. Fixes:2a9a801620("PCI: endpoint: Add support to specify alignment for buffers allocated to BARs") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> [mani: commit message fixup] Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> [bhelgaas: more specific subject, commit log, wrap comment to match file] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Niklas Cassel <cassel@kernel.org> Link: https://patch.msgid.link/20250424-pci-ep-size-alignment-v5-1-2d4ec2af23f5@baylibre.com Signed-off-by: Sasha Levin <sashal@kernel.org>