linux-kernel - [PATCH] p54: Use the bitmap API to allocate bitmaps

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Date:   Mon,  4 Jul 2022 15:02:55 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Christian Lamparter <chunkeey@...glemail.com>,
        Kalle Valo <kvalo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH] p54: 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/net/wireless/intersil/p54/fwio.c | 6 ++----
 drivers/net/wireless/intersil/p54/main.c | 2 +-
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/intersil/p54/fwio.c b/drivers/net/wireless/intersil/p54/fwio.c
index bece14e4ff0d..b52cce38115d 100644
--- a/drivers/net/wireless/intersil/p54/fwio.c
+++ b/drivers/net/wireless/intersil/p54/fwio.c
@@ -173,10 +173,8 @@ int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 		 * keeping a extra list for uploaded keys.
 		 */
 
-		priv->used_rxkeys = kcalloc(BITS_TO_LONGS(priv->rx_keycache_size),
-					    sizeof(long),
-					    GFP_KERNEL);
-
+		priv->used_rxkeys = bitmap_zalloc(priv->rx_keycache_size,
+						  GFP_KERNEL);
 		if (!priv->used_rxkeys)
 			return -ENOMEM;
 	}
diff --git a/drivers/net/wireless/intersil/p54/main.c b/drivers/net/wireless/intersil/p54/main.c
index 115be1f3f33d..c1e1711382a7 100644
--- a/drivers/net/wireless/intersil/p54/main.c
+++ b/drivers/net/wireless/intersil/p54/main.c
@@ -830,7 +830,7 @@ void p54_free_common(struct ieee80211_hw *dev)
 	kfree(priv->output_limit);
 	kfree(priv->curve_data);
 	kfree(priv->rssi_db);
-	kfree(priv->used_rxkeys);
+	bitmap_free(priv->used_rxkeys);
 	kfree(priv->survey);
 	priv->iq_autocal = NULL;
 	priv->output_limit = NULL;
-- 
2.34.1