[074/114] gen_nand: Test if nr_chips field is valid

[Greg KH]

2.6.35-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Marek Vasut <marek.vasut@xxxxxxxxx>

commit 01cd2ababddd55a127caa1cd20d570637e0d42e1 upstream.

Signed-off-by: Marek Vasut <marek.vasut@xxxxxxxxx>
Signed-off-by: David Woodhouse <David.Woodhouse@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 drivers/mtd/nand/plat_nand.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/mtd/nand/plat_nand.c
+++ b/drivers/mtd/nand/plat_nand.c
@@ -37,6 +37,11 @@ static int __devinit plat_nand_probe(str
 	struct resource *res;
 	int err = 0;
 
+	if (pdata->chip.nr_chips < 1) {
+		dev_err(&pdev->dev, "invalid number of chips specified\n");
+		return -EINVAL;
+	}
+
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res)
 		return -ENXIO;


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