[PATCH 2/3] crypto: omap - add omap_des_unregister_algs helper

[Thorsten Blum <thorsten.blum@linux.dev>]

Add a new helper omap_des_unregister_algs() and replace two for loops in
omap_des_probe() and omap_des_remove(), which also ensure ->registered
is reset to 0.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
---
 drivers/crypto/omap-des.c | 26 ++++++++++++++++----------
 1 file changed, 16 insertions(+), 10 deletions(-)

diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index 149ebd77710b..16d5c617d5ee 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -938,6 +938,20 @@ static int omap_des_get_pdev(struct omap_des_dev *dd,
 	return 0;
 }
 
+static void omap_des_unregister_algs(const struct omap_des_pdata *pdata)
+{
+	struct omap_des_algs_info *alg_info;
+	int i;
+
+	for (i = pdata->algs_info_size - 1; i >= 0; i--) {
+		alg_info = &pdata->algs_info[i];
+
+		crypto_engine_unregister_skciphers(alg_info->algs_list,
+						   alg_info->registered);
+		alg_info->registered = 0;
+	}
+}
+
 static int omap_des_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -1043,11 +1057,7 @@ static int omap_des_probe(struct platform_device *pdev)
 	return 0;
 
 err_algs:
-	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
-		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
-			crypto_engine_unregister_skcipher(
-					&dd->pdata->algs_info[i].algs_list[j]);
-
+	omap_des_unregister_algs(dd->pdata);
 err_engine:
 	if (dd->engine)
 		crypto_engine_exit(dd->engine);
@@ -1067,16 +1077,12 @@ static int omap_des_probe(struct platform_device *pdev)
 static void omap_des_remove(struct platform_device *pdev)
 {
 	struct omap_des_dev *dd = platform_get_drvdata(pdev);
-	int i, j;
 
 	spin_lock_bh(&list_lock);
 	list_del(&dd->list);
 	spin_unlock_bh(&list_lock);
 
-	for (i = dd->pdata->algs_info_size - 1; i >= 0; i--)
-		for (j = dd->pdata->algs_info[i].registered - 1; j >= 0; j--)
-			crypto_engine_unregister_skcipher(
-					&dd->pdata->algs_info[i].algs_list[j]);
+	omap_des_unregister_algs(dd->pdata);
 
 	cancel_work_sync(&dd->done_task);
 	omap_des_dma_cleanup(dd);