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| author |   Tim Harvey <tharvey@gateworks.com> | 2021-11-01 11:02:43 -0700 |
|---|---|---|
| committer |   Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2021-12-02 09:41:43 +0000 |
| commit | 6e5ebc96ec651b67131f816d7e3bf286c635e749 (patch) | |
| tree | f4a92f905961b944e597cae545d18a18c9c83dd1 /drivers/pci/controller/dwc/pcie-designware.c | |
| parent | Linux 5.16-rc1 (diff) | |
| download | wireguard-linux-6e5ebc96ec651b67131f816d7e3bf286c635e749.tar.xz wireguard-linux-6e5ebc96ec651b67131f816d7e3bf286c635e749.zip | |
PCI: dwc: Do not remap invalid res
On imx6 and perhaps others when pcie probes you get a:
imx6q-pcie 33800000.pcie: invalid resource
This occurs because the atu is not specified in the DT and as such it
should not be remapped.
Link: https://lore.kernel.org/r/20211101180243.23761-1-tharvey@gateworks.com
Fixes: 281f1f99cf3a ("PCI: dwc: Detect number of iATU windows")
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Richard Zhu <hongxing.zhu@nxp.com>
Cc: Richard Zhu <hongxing.zhu@nxp.com>
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-designware.c')
| -rw-r--r-- | drivers/pci/controller/dwc/pcie-designware.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c index 850b4533f4ef..d92c8a25094f 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -672,10 +672,11 @@ void dw_pcie_iatu_detect(struct dw_pcie *pci) if (!pci->atu_base) { struct resource *res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "atu"); - if (res) + if (res) { pci->atu_size = resource_size(res); - pci->atu_base = devm_ioremap_resource(dev, res); - if (IS_ERR(pci->atu_base)) + pci->atu_base = devm_ioremap_resource(dev, res); + } + if (!pci->atu_base || IS_ERR(pci->atu_base)) pci->atu_base = pci->dbi_base + DEFAULT_DBI_ATU_OFFSET; } |