[PATCH 3/7] mtd: nand: davinci: check required ti, davinci-chipselect property

[Ivan Khoronzhuk]

The property "ti,davinci-chipselect" is required. So we have to check
if it is set.

Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk at ti.com>
---
 drivers/mtd/nand/davinci_nand.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index ddcd7c8..9a96ac7 100644
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -545,6 +545,9 @@ static struct davinci_nand_pdata
 		if (!of_property_read_u32(pdev->dev.of_node,
 			"ti,davinci-chipselect", &prop))
 			pdev->id = prop;
+		else
+			return ERR_PTR(-EINVAL);
+
 		if (!of_property_read_u32(pdev->dev.of_node,
 			"ti,davinci-mask-ale", &prop))
 			pdata->mask_ale = prop;
-- 
1.7.9.5