From: Corentin LABBE <clabbe.montjoie@gmail.com>
Date: Wed, 20 Sep 2017 18:42:48 +0000 (+0200)
Subject: crypto: omap - use of_device_get_match_data
X-Git-Tag: v5.15~9896^2~115
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7d556931520e1e0df4c3e545ab8ba74046410c37;p=platform%2Fkernel%2Flinux-starfive.git

crypto: omap - use of_device_get_match_data

The usage of of_device_get_match_data reduce the code size a bit.
Furthermore, it prevents an improbable dereference when
of_match_device() return NULL.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
---

diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index 1f3686a..fbec0a2 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -975,11 +975,10 @@ static int omap_aes_get_res_of(struct omap_aes_dev *dd,
 		struct device *dev, struct resource *res)
 {
 	struct device_node *node = dev->of_node;
-	const struct of_device_id *match;
 	int err = 0;
 
-	match = of_match_device(of_match_ptr(omap_aes_of_match), dev);
-	if (!match) {
+	dd->pdata = of_device_get_match_data(dev);
+	if (!dd->pdata) {
 		dev_err(dev, "no compatible OF match\n");
 		err = -EINVAL;
 		goto err;
@@ -992,8 +991,6 @@ static int omap_aes_get_res_of(struct omap_aes_dev *dd,
 		goto err;
 	}
 
-	dd->pdata = match->data;
-
 err:
 	return err;
 }
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index d37c950..ebc5c0f 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -928,16 +928,13 @@ MODULE_DEVICE_TABLE(of, omap_des_of_match);
 static int omap_des_get_of(struct omap_des_dev *dd,
 		struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 
-	match = of_match_device(of_match_ptr(omap_des_of_match), &pdev->dev);
-	if (!match) {
+	dd->pdata = of_device_get_match_data(&pdev->dev);
+	if (!dd->pdata) {
 		dev_err(&pdev->dev, "no compatible OF match\n");
 		return -EINVAL;
 	}
 
-	dd->pdata = match->data;
-
 	return 0;
 }
 #else
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index c40ac30..86b89ac 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -1944,11 +1944,10 @@ static int omap_sham_get_res_of(struct omap_sham_dev *dd,
 		struct device *dev, struct resource *res)
 {
 	struct device_node *node = dev->of_node;
-	const struct of_device_id *match;
 	int err = 0;
 
-	match = of_match_device(of_match_ptr(omap_sham_of_match), dev);
-	if (!match) {
+	dd->pdata = of_device_get_match_data(dev);
+	if (!dd->pdata) {
 		dev_err(dev, "no compatible OF match\n");
 		err = -EINVAL;
 		goto err;
@@ -1968,8 +1967,6 @@ static int omap_sham_get_res_of(struct omap_sham_dev *dd,
 		goto err;
 	}
 
-	dd->pdata = match->data;
-
 err:
 	return err;
 }