From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Date: Sun, 25 May 2025 08:11:44 +0000 (+0200)
Subject: media: verisilicon: Use __set_bit() with local bitmaps
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70c37d403e7eba64d3eaadb8549d8f483912b6d1;p=thirdparty%2Flinux.git

media: verisilicon: Use __set_bit() with local bitmaps

The 'used' and 'new' bitmaps are local to this function, so there is no
need to use atomic access because concurrency can not happen.

Use the non-atomic __set_bit() to save a few cycles.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
---

diff --git a/drivers/media/platform/verisilicon/hantro_h264.c b/drivers/media/platform/verisilicon/hantro_h264.c
index 4e9a0ecf5c133..2414782f1eb61 100644
--- a/drivers/media/platform/verisilicon/hantro_h264.c
+++ b/drivers/media/platform/verisilicon/hantro_h264.c
@@ -325,12 +325,12 @@ static void update_dpb(struct hantro_ctx *ctx)
 				continue;
 
 			*cdpb = *ndpb;
-			set_bit(j, used);
+			__set_bit(j, used);
 			break;
 		}
 
 		if (j == ARRAY_SIZE(ctx->h264_dec.dpb))
-			set_bit(i, new);
+			__set_bit(i, new);
 	}
 
 	/* For entries that could not be matched, use remaining free slots. */
@@ -349,7 +349,7 @@ static void update_dpb(struct hantro_ctx *ctx)
 
 		cdpb = &ctx->h264_dec.dpb[j];
 		*cdpb = *ndpb;
-		set_bit(j, used);
+		__set_bit(j, used);
 	}
 }