linux-kernel - [PATCH v2] firmware: ti_sci: Use devm_bitmap

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Date:   Thu,  3 Nov 2022 07:41:30 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Nishanth Menon <nm@...com>, Tero Kristo <kristo@...nel.org>,
        Santosh Shilimkar <ssantosh@...nel.org>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2] firmware: ti_sci: Use devm_bitmap_zalloc when applicable

'xfer_alloc_table' is a bitmap. So use 'devm_bitmap_zalloc()' to simplify
code and improve the semantic of the code.

While at it, remove a redundant 'bitmap_zero()' call.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Reviewed-by: Nishanth Menon <nm@...com>
---
Change in v2:
  * sync with -next
  * add R-b

v1: https://lore.kernel.org/all/1bd77909ff75f62a2228a39db208c4c6d1b3e0e2.1632659746.git.christophe.jaillet@wanadoo.fr/
---
 drivers/firmware/ti_sci.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index 6d2fd0ff7ff3..039d92a595ec 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -3398,13 +3398,11 @@ static int ti_sci_probe(struct platform_device *pdev)
 	if (!minfo->xfer_block)
 		return -ENOMEM;
 
-	minfo->xfer_alloc_table = devm_kcalloc(dev,
-					       BITS_TO_LONGS(desc->max_msgs),
-					       sizeof(unsigned long),
-					       GFP_KERNEL);
+	minfo->xfer_alloc_table = devm_bitmap_zalloc(dev,
+						     desc->max_msgs,
+						     GFP_KERNEL);
 	if (!minfo->xfer_alloc_table)
 		return -ENOMEM;
-	bitmap_zero(minfo->xfer_alloc_table, desc->max_msgs);
 
 	/* Pre-initialize the buffer pointer to pre-allocated buffers */
 	for (i = 0, xfer = minfo->xfer_block; i < desc->max_msgs; i++, xfer++) {
-- 
2.34.1