linux-kernel - [PATCH] crypto: hisilicon/zip: Use the bitmap API to allocate bitmaps

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Message-Id: <49a1b5bf6e8f7c2ad06a0e2dbc35e00169d4ebe2.1657383385.git.christophe.jaillet@wanadoo.fr>
Date:   Sat,  9 Jul 2022 18:16:46 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Yang Shen <shenyang39@...wei.com>,
        Zhou Wang <wangzhou1@...ilicon.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        "David S. Miller" <davem@...emloft.net>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-crypto@...r.kernel.org
Subject: [PATCH] crypto: hisilicon/zip: Use the bitmap API to allocate bitmaps

Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.

It is less verbose and it improves the semantic.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/crypto/hisilicon/zip/zip_crypto.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/crypto/hisilicon/zip/zip_crypto.c b/drivers/crypto/hisilicon/zip/zip_crypto.c
index 67869513e48c..7bf53877e508 100644
--- a/drivers/crypto/hisilicon/zip/zip_crypto.c
+++ b/drivers/crypto/hisilicon/zip/zip_crypto.c
@@ -606,8 +606,7 @@ static int hisi_zip_create_req_q(struct hisi_zip_ctx *ctx)
 		req_q = &ctx->qp_ctx[i].req_q;
 		req_q->size = QM_Q_DEPTH;
 
-		req_q->req_bitmap = kcalloc(BITS_TO_LONGS(req_q->size),
-					    sizeof(long), GFP_KERNEL);
+		req_q->req_bitmap = bitmap_zalloc(req_q->size, GFP_KERNEL);
 		if (!req_q->req_bitmap) {
 			ret = -ENOMEM;
 			if (i == 0)
@@ -631,11 +630,11 @@ static int hisi_zip_create_req_q(struct hisi_zip_ctx *ctx)
 	return 0;
 
 err_free_loop1:
-	kfree(ctx->qp_ctx[HZIP_QPC_DECOMP].req_q.req_bitmap);
+	bitmap_free(ctx->qp_ctx[HZIP_QPC_DECOMP].req_q.req_bitmap);
 err_free_loop0:
 	kfree(ctx->qp_ctx[HZIP_QPC_COMP].req_q.q);
 err_free_bitmap:
-	kfree(ctx->qp_ctx[HZIP_QPC_COMP].req_q.req_bitmap);
+	bitmap_free(ctx->qp_ctx[HZIP_QPC_COMP].req_q.req_bitmap);
 	return ret;
 }
 
@@ -645,7 +644,7 @@ static void hisi_zip_release_req_q(struct hisi_zip_ctx *ctx)
 
 	for (i = 0; i < HZIP_CTX_Q_NUM; i++) {
 		kfree(ctx->qp_ctx[i].req_q.q);
-		kfree(ctx->qp_ctx[i].req_q.req_bitmap);
+		bitmap_free(ctx->qp_ctx[i].req_q.req_bitmap);
 	}
 }
 
-- 
2.34.1