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

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Message-Id: <3ff2b491c397ba4f763fd2fbcb6795f0c33da2f3.1657568452.git.christophe.jaillet@wanadoo.fr>
Date:   Mon, 11 Jul 2022 21:41:18 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Jiri Kosina <jikos@...nel.org>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-input@...r.kernel.org
Subject: [PATCH] HID: multitouch: 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/hid/hid-multitouch.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 2e72922e36f5..2b19938e0fb8 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1300,10 +1300,9 @@ static int mt_touch_input_configured(struct hid_device *hdev,
 	if (td->is_buttonpad)
 		__set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
 
-	app->pending_palm_slots = devm_kcalloc(&hi->input->dev,
-					       BITS_TO_LONGS(td->maxcontacts),
-					       sizeof(long),
-					       GFP_KERNEL);
+	app->pending_palm_slots = devm_bitmap_zalloc(&hi->input->dev,
+						     td->maxcontacts,
+						     GFP_KERNEL);
 	if (!app->pending_palm_slots)
 		return -ENOMEM;
 
-- 
2.34.1