From: Jean-Jacques Hiblot Date: Fri, 14 Feb 2014 18:46:15 +0000 (-0700) Subject: PCI: mvebu: Fix potential issue in range parsing X-Git-Tag: firefly_0821_release~176^2~4197^2~7^2~2 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4f4bde1df33bde076f53325bdf2c6430cf85e1bb;p=firefly-linux-kernel-4.4.55.git 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: 11be65472a427 ("PCI: mvebu: Adapt to the new device tree layout") Tested-by: Thomas Petazzoni Signed-off-by: Jean-Jacques Hiblot Signed-off-by: Bjorn Helgaas Acked-by: Thomas Petazzoni Acked-by: Jason Cooper Cc: stable@vger.kernel.org # v3.12+ --- diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c index 0e79665afd44..05e352889868 100644 --- a/drivers/pci/host/pci-mvebu.c +++ b/drivers/pci/host/pci-mvebu.c @@ -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;