diff options
| author | Tim Harvey <tharvey@gateworks.com> | 2021-11-01 21:02:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-08 21:12:34 +0300 |
| commit | a2f5e9a6f2a060cfa7668da3c82a4f79e4c61930 (patch) | |
| tree | 732f33c126af3b9c2264a70ead1619a872ed08c8 /drivers/pci | |
| parent | d9fc43aab60d39115d79901c620c74fd46f59241 (diff) | |
| download | linux-a2f5e9a6f2a060cfa7668da3c82a4f79e4c61930.tar.xz | |
PCI: dwc: Do not remap invalid res
[ Upstream commit 6e5ebc96ec651b67131f816d7e3bf286c635e749 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pci')
| -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 a945f0c0e73d..3254f60d1713 100644 --- a/drivers/pci/controller/dwc/pcie-designware.c +++ b/drivers/pci/controller/dwc/pcie-designware.c @@ -671,10 +671,11 @@ 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; } |