From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH 3/4] bitops: implement assign_bit()
Date: Mon, 7 Nov 2022 15:45:23 +0100 [thread overview]
Message-ID: <20221107144524.489471-4-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20221107144524.489471-1-s.hauer@pengutronix.de>
assign_bit() is a useful shortcut to if (foo) set_bit(); else clear_bit();
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
include/linux/bitops.h | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 84161e43a3..eb5ff37f2f 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -194,6 +194,20 @@ static inline unsigned long __ffs64(u64 word)
return __ffs((unsigned long)word);
}
+/**
+ * assign_bit - Assign value to a bit in memory
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ * @value: the value to assign
+ */
+static inline void assign_bit(long nr, volatile unsigned long *addr, bool value)
+{
+ if (value)
+ set_bit(nr, addr);
+ else
+ clear_bit(nr, addr);
+}
+
#ifdef __KERNEL__
#ifndef set_mask_bits
--
2.30.2
next prev parent reply other threads:[~2022-11-07 15:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-07 14:45 [PATCH 0/4] gpio: Add gpio latch driver Sascha Hauer
2022-11-07 14:45 ` [PATCH 1/4] bitmap: Implement bitmap_*zalloc() Sascha Hauer
2022-11-07 14:45 ` [PATCH 2/4] bitops: include linux/types.h Sascha Hauer
2022-11-07 14:45 ` Sascha Hauer [this message]
2022-11-07 14:45 ` [PATCH 4/4] gpio: Add gpio latch driver Sascha Hauer
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