linux-kernel - [PATCH v4 5/5] i3c: cdns: use parity8 helper instead of open coding it

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250107090204.6593-6-wsa+renesas@sang-engineering.com>
Date: Tue,  7 Jan 2025 10:02:03 +0100
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: linux-i3c@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Przemysław Gaj <pgaj@...ence.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH v4 5/5] i3c: cdns: use parity8 helper instead of open coding it

The kernel has now a generic helper for getting parity with easier to
understand semantics. Make use of it.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/i3c/master/i3c-master-cdns.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/i3c/master/i3c-master-cdns.c b/drivers/i3c/master/i3c-master-cdns.c
index 06c0592487d3..fedbe6624a1c 100644
--- a/drivers/i3c/master/i3c-master-cdns.c
+++ b/drivers/i3c/master/i3c-master-cdns.c
@@ -889,8 +889,7 @@ static u32 prepare_rr0_dev_address(u32 addr)
 	ret |= (addr & GENMASK(9, 7)) << 6;
 
 	/* RR0[0] = ~XOR(addr[6:0]) */
-	if (!(hweight8(addr & 0x7f) & 1))
-		ret |= 1;
+	ret |= parity8(addr & 0x7f) ? 0 : BIT(0);
 
 	return ret;
 }
-- 
2.45.2