linux-kernel - [PATCH] crypto: atmel-sha: Switch to managed version of kzalloc

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Date:	Mon, 28 Jul 2014 17:45:56 +0530
From:	pramod.gurav.etc@...il.com
To:	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Pramod Gurav <pramod.gurav@...rtplayin.com>,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"David S. Miller" <davem@...emloft.net>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>
Subject: [PATCH] crypto: atmel-sha: Switch to managed version of kzalloc

From: Pramod Gurav <pramod.gurav@...rtplayin.com>

This patch switches data allocation from kzalloc to devm_kzalloc.
It also removed some kfree() on data that was earlier allocated
using devm_kzalloc().

CC: Herbert Xu <herbert@...dor.apana.org.au>
CC: "David S. Miller" <davem@...emloft.net>
CC: Grant Likely <grant.likely@...aro.org>
CC: Rob Herring <robh+dt@...nel.org>
CC: Nicolas Ferre <nicolas.ferre@...el.com>

Signed-off-by: Pramod Gurav <pramod.gurav@...rtplayin.com>
---
 drivers/crypto/atmel-sha.c |    9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 0618be0..9a4f69e 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -1353,7 +1353,6 @@ static struct crypto_platform_data *atmel_sha_of_init(struct platform_device *pd
 					GFP_KERNEL);
 	if (!pdata->dma_slave) {
 		dev_err(&pdev->dev, "could not allocate memory for dma_slave\n");
-		devm_kfree(&pdev->dev, pdata);
 		return ERR_PTR(-ENOMEM);
 	}
 
@@ -1375,7 +1374,8 @@ static int atmel_sha_probe(struct platform_device *pdev)
 	unsigned long sha_phys_size;
 	int err;
 
-	sha_dd = kzalloc(sizeof(struct atmel_sha_dev), GFP_KERNEL);
+	sha_dd = devm_kzalloc(&pdev->dev, sizeof(struct atmel_sha_dev),
+				GFP_KERNEL);
 	if (sha_dd == NULL) {
 		dev_err(dev, "unable to alloc data struct.\n");
 		err = -ENOMEM;
@@ -1490,8 +1490,6 @@ clk_err:
 	free_irq(sha_dd->irq, sha_dd);
 res_err:
 	tasklet_kill(&sha_dd->done_task);
-	kfree(sha_dd);
-	sha_dd = NULL;
 sha_dd_err:
 	dev_err(dev, "initialization failed.\n");
 
@@ -1523,9 +1521,6 @@ static int atmel_sha_remove(struct platform_device *pdev)
 	if (sha_dd->irq >= 0)
 		free_irq(sha_dd->irq, sha_dd);
 
-	kfree(sha_dd);
-	sha_dd = NULL;
-
 	return 0;
 }
 
-- 
1.7.9.5

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