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From 7e8fbc673938278ec7165b99b76227d7cc2ab012 Mon Sep 17 00:00:00 2001
From: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Date: Wed, 17 Apr 2013 13:38:13 -0300
Subject: [PATCH 105/203] mtd: nand: pxa3xx: Check for clk_prepare_enable()
return value
clk_prepare_enable() can fail due to unknown reason.
Add a check for this and return the error code if it fails.
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---
drivers/mtd/nand/pxa3xx_nand.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1072,7 +1072,9 @@ static int alloc_nand_resource(struct pl
dev_err(&pdev->dev, "failed to get nand clock\n");
return PTR_ERR(info->clk);
}
- clk_prepare_enable(info->clk);
+ ret = clk_prepare_enable(info->clk);
+ if (ret < 0)
+ return ret;
/*
* This is a dirty hack to make this driver work from devicetree
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