PCI: dwc: Strengthen the MSI address allocation logic
There can be platforms that do not use/have 32-bit DMA addresses. The current implementation of 32-bit IOVA allocation can fail for such platforms, eventually leading to the probe failure. Try to allocate a 32-bit msi_data. If this allocation fails, attempt a 64-bit address allocation. Please note that if the 64-bit MSI address is allocated, then the EPs supporting 32-bit MSI address only will not work. Link: https://lore.kernel.org/linux-pci/20240221153840.1789979-1-ajayagarwal@google.com Tested-by: Will McVicker <willmcvicker@google.com> Signed-off-by: Ajay Agarwal <ajayagarwal@google.com> Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Serge Semin <fancer.lancer@gmail.com> Reviewed-by: Will McVicker <willmcvicker@google.com>
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