Re: [PATCH v4 1/2] PCI: dwc: Drop dependency on ZONE_DMA32

[Han Jingoo]

On 08/11/2022, Will McVicker wrote:
> Re-work the msi_msg DMA allocation logic to use dmam_alloc_coherent() which
> uses the coherent DMA mask to try to return an allocation within the DMA
> mask limits. With that, we now can drop the msi_page parameter in struct
> dw_pcie_rp. This allows kernel configurations that disable ZONE_DMA32 to
> continue supporting a 32-bit DMA mask. Without this patch, the PCIe host
> device will fail to probe when ZONE_DMA32 is disabled.
>
> Fixes: 35797e672ff0 ("PCI: dwc: Fix MSI msi_msg DMA mapping")
> Reported-by: Isaac J. Manjarres <isaacmanjarres@xxxxxxxxxx>
> Signed-off-by: Will McVicker <willmcvicker@xxxxxxxxxx>
Acked-by: Jingoo Han <jingoohan1@xxxxxxxxx>

> ---
> .../pci/controller/dwc/pcie-designware-host.c | 28 +++++--------------
> drivers/pci/controller/dwc/pcie-designware.h  |  1 -
> 2 files changed, 7 insertions(+), 22 deletions(-)

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