linux-kernel - [PATCH] mvebu : pcie: dt: potential issue in range parsing

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Date:	Fri, 10 Jan 2014 11:23:51 +0100
From:	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
To:	thomas.petazzoni@...e-electrons.com
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	gregory.clement@...e-electrons.com,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>
Subject: [PATCH] mvebu : pcie: dt: 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 the conversion
to u32 and the favorable endianness on this architecture.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@...phandler.com>
---
 drivers/pci/host/pci-mvebu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/host/pci-mvebu.c b/drivers/pci/host/pci-mvebu.c
index c269e43..877e8ce 100644
--- a/drivers/pci/host/pci-mvebu.c
+++ b/drivers/pci/host/pci-mvebu.c
@@ -768,7 +768,7 @@ 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;
 
-- 
1.8.5.2

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