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PCI: rcar: Verify that mem_res is 64K-aligned

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The lower 16 bits of the address, which is managed by mem_res, need to be
zero.  Check the address to verify this.

Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Acked-by: Simon Horman <[email protected]>
This commit is contained in:
Nobuhiro Iwamatsu 2015-02-16 10:54:08 +09:00 • committed by Bjorn Helgaas
commit 7a27db23a3
1 changed files with 3 additions and 0 deletions
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3
drivers/pci/host/pci-rcar-gen2.c
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@ -301,6 +301,9 @@ static int rcar_pci_probe(struct platform_device *pdev)
if (!mem_res || !mem_res->start)
return -ENODEV;
if (mem_res->start & 0xFFFF)
return -EINVAL;
priv = devm_kzalloc(&pdev->dev,
sizeof(struct rcar_pci_priv), GFP_KERNEL);
if (!priv)