[PATCH 6.12.y 1/2] crypto: omap - add omap_sham_unregister_algs helper

[Sasha Levin <sashal@kernel.org>]

From: Thorsten Blum <thorsten.blum@linux.dev>

[ Upstream commit c3494e6fbb35579a131de11369b658a59b1323e5 ]

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

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stable-dep-of: be51ea091c65 ("crypto: omap-sham - fix crypto engine cleanup")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
Depends on <20261110115837.921428-1-sashal@kernel.org>

 drivers/crypto/omap-sham.c | 27 ++++++++++++++++-----------
 1 file changed, 16 insertions(+), 11 deletions(-)

diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index d17654c0410f6..51842cf61995a 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -2045,6 +2045,20 @@ static const struct attribute_group omap_sham_attr_group = {
 	.attrs = omap_sham_attrs,
 };
 
+static void omap_sham_unregister_algs(const struct omap_sham_pdata *pdata)
+{
+	struct omap_sham_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_ahashes(alg_info->algs_list,
+						 alg_info->registered);
+		alg_info->registered = 0;
+	}
+}
+
 static int omap_sham_probe(struct platform_device *pdev)
 {
 	struct omap_sham_dev *dd;
@@ -2168,10 +2182,7 @@ static int omap_sham_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_ahash(
-					&dd->pdata->algs_info[i].algs_list[j]);
+	omap_sham_unregister_algs(dd->pdata);
 err_engine_start:
 	crypto_engine_exit(dd->engine);
 err_engine:
@@ -2192,19 +2203,13 @@ static int omap_sham_probe(struct platform_device *pdev)
 static void omap_sham_remove(struct platform_device *pdev)
 {
 	struct omap_sham_dev *dd;
-	int i, j;
 
 	dd = platform_get_drvdata(pdev);
 
 	spin_lock_bh(&sham.lock);
 	list_del(&dd->list);
 	spin_unlock_bh(&sham.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_ahash(
-					&dd->pdata->algs_info[i].algs_list[j]);
-			dd->pdata->algs_info[i].registered--;
-		}
+	omap_sham_unregister_algs(dd->pdata);
 	cancel_work_sync(&dd->done_task);
 	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-- 
2.53.0