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>

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;
 }

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

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;
 }