[PATCH v3 06/16] serial: max3100: Replace open-coded parity calculation with parity8()

Kuan-Wei Chiu <[email protected]>
Newsgroups dev.linux.lists.brcm80211,org.freedesktop.lists.dri-devel,org.infradead.lists.linux-mtd,org.kernel.vger.bpf,org.kernel.vger.linux-input,org.kernel.vger.linux-kernel,org.kernel.vger.linux-media,org.kernel.vger.linux-serial,org.kernel.vger.linux-wireless,org.kernel.vger.netdev
Message-ID <[email protected]>
Refactor parity calculations to use the standard parity8() helper. This
change eliminates redundant implementations and improves code
efficiency.

Co-developed-by: Yu-Chun Lin <[email protected]>
Signed-off-by: Yu-Chun Lin <[email protected]>
Signed-off-by: Kuan-Wei Chiu <[email protected]>
---
Changes in v3:
- Change parity8(c) to !!parity8(c).

 drivers/tty/serial/max3100.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/tty/serial/max3100.c b/drivers/tty/serial/max3100.c
index cde5f1c86353..419d74043498 100644
--- a/drivers/tty/serial/max3100.c
+++ b/drivers/tty/serial/max3100.c
@@ -16,6 +16,7 @@
 /* 4 MAX3100s should be enough for everyone */
 #define MAX_MAX3100 4
 
+#include <linux/bitops.h>
 #include <linux/container_of.h>
 #include <linux/delay.h>
 #include <linux/device.h>
@@ -133,7 +134,7 @@ static int max3100_do_parity(struct max3100_port *s, u16 c)
 	else
 		c &= 0xff;
 
-	parity = parity ^ (hweight8(c) & 1);
+	parity = parity ^ !!parity8(c);
 	return parity;
 }
 
-- 
2.34.1
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