From: Fabio Estevam <fabio.estevam@freescale.com>
Date: Mon, 23 Sep 2013 21:12:04 +0000 (-0300)
Subject: crypto: dcp - Check the return value from devm_ioremap_resource()
X-Git-Tag: v3.13-rc2~35^2~24
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=ac1ed0c0e1a3b52cac89aae92ebc55fd4c19be77;p=linux.git

crypto: dcp - Check the return value from devm_ioremap_resource()

devm_ioremap_resource() may fail, so better check its return value and propagate
it in the case of error.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/dcp.c b/drivers/crypto/dcp.c
index 7b77c8457854..247ab8048f5b 100644
--- a/drivers/crypto/dcp.c
+++ b/drivers/crypto/dcp.c
@@ -734,6 +734,8 @@ static int dcp_probe(struct platform_device *pdev)
 
 	r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	dev->dcp_regs_base = devm_ioremap_resource(&pdev->dev, r);
+	if (IS_ERR(dev->dcp_regs_base))
+		return PTR_ERR(dev->dcp_regs_base);
 
 	dcp_set(dev, DCP_CTRL_SFRST, DCP_REG_CTRL);
 	udelay(10);