From: "zhaoxiu.zeng" <zhaoxiu.zeng@gmail.com>
To: Hans Verkuil <hverkuil@xs4all.nl>,
Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-kernel@vger.kernel.org, linux-media@vger.kernel.org
Subject: [PATCH 15/31] media: use parity8 in vivid-vbi-gen.c
Date: Sun, 27 Mar 2016 15:06:02 +0800 [thread overview]
Message-ID: <56F7865A.1060206@gmail.com> (raw)
In-Reply-To: <1458788612-4367-1-git-send-email-zhaoxiu.zeng@gmail.com>
From: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
Signed-off-by: Zeng Zhaoxiu <zhaoxiu.zeng@gmail.com>
---
drivers/media/platform/vivid/vivid-vbi-gen.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/vivid/vivid-vbi-gen.c b/drivers/media/platform/vivid/vivid-vbi-gen.c
index a2159de..d5ba0fc 100644
--- a/drivers/media/platform/vivid/vivid-vbi-gen.c
+++ b/drivers/media/platform/vivid/vivid-vbi-gen.c
@@ -175,14 +175,9 @@ static const u8 vivid_cc_sequence2[30] = {
0x14, 0x2f, /* End of Caption */
};
-static u8 calc_parity(u8 val)
+static inline u8 calc_parity(u8 val)
{
- unsigned i;
- unsigned tot = 0;
-
- for (i = 0; i < 7; i++)
- tot += (val & (1 << i)) ? 1 : 0;
- return val | ((tot & 1) ? 0 : 0x80);
+ return (!parity8(val) << 7) | val;
}
static void vivid_vbi_gen_set_time_of_day(u8 *packet)
--
2.5.5
next parent reply other threads:[~2016-03-27 7:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1458788612-4367-1-git-send-email-zhaoxiu.zeng@gmail.com>
2016-03-27 7:06 ` zhaoxiu.zeng [this message]
2016-03-27 7:10 ` [PATCH 16/31] media: saa7115: use parity functions zhaoxiu.zeng
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