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

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Message-Id: <7112242cb741443d6abc18ebc210431f0c4ffa18.1656880577.git.christophe.jaillet@wanadoo.fr>
Date:   Sun,  3 Jul 2022 22:36:30 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Oded Gabbay <ogabbay@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] habanalabs: 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/misc/habanalabs/common/asid.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/habanalabs/common/asid.c b/drivers/misc/habanalabs/common/asid.c
index ede04c032b6e..c9c2619cc43d 100644
--- a/drivers/misc/habanalabs/common/asid.c
+++ b/drivers/misc/habanalabs/common/asid.c
@@ -11,8 +11,7 @@
 
 int hl_asid_init(struct hl_device *hdev)
 {
-	hdev->asid_bitmap = kcalloc(BITS_TO_LONGS(hdev->asic_prop.max_asid),
-					sizeof(*hdev->asid_bitmap), GFP_KERNEL);
+	hdev->asid_bitmap = bitmap_zalloc(hdev->asic_prop.max_asid, GFP_KERNEL);
 	if (!hdev->asid_bitmap)
 		return -ENOMEM;
 
@@ -27,7 +26,7 @@ int hl_asid_init(struct hl_device *hdev)
 void hl_asid_fini(struct hl_device *hdev)
 {
 	mutex_destroy(&hdev->asid_mutex);
-	kfree(hdev->asid_bitmap);
+	bitmap_free(hdev->asid_bitmap);
 }
 
 unsigned long hl_asid_alloc(struct hl_device *hdev)
-- 
2.34.1