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PCI: mvebu: Fix potential issue in range parsing 

The second parameter of of_read_number() is not the index, but a size.  As
it happens, in this case it may work just fine because of the conversion to
u32 and the favorable endianness on this architecture.

Fixes: 11be65472a ("PCI: mvebu: Adapt to the new device tree layout")
Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jean-Jacques Hiblot <jjhiblot@traphandler.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Cc: stable@vger.kernel.org	# v3.12+
This commit is contained in:
Jean-Jacques Hiblot 2014-02-14 11:46:15 -07:00 committed by Bjorn Helgaas
parent a760d2fb2c
commit 4f4bde1df3
1 changed files with 1 additions and 1 deletions
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2
drivers/pci/host/pci-mvebu.c
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@ -797,7 +797,7 @@ static int mvebu_get_tgt_attr(struct device_node *np, int devfn,
for (i = 0; i < nranges; i++) {
u32 flags = of_read_number(range, 1);
u32 slot = of_read_number(range, 2);
u32 slot = of_read_number(range + 1, 1);
u64 cpuaddr = of_read_number(range + na, pna);
unsigned long rtype;