From: Martin Kepplinger <martink@posteo.de>
To: peterz@infradead.org
Cc: mingo@kernel.org, tytso@mit.edu, linux-kernel@vger.kernel.org,
Martin Kepplinger <martink@posteo.de>
Subject: [PATCH 3/6] hwmon: jc42: use bitops' sign_extend16
Date: Mon, 15 Dec 2014 17:18:34 +0100 [thread overview]
Message-ID: <1418660317-21750-4-git-send-email-martink@posteo.de> (raw)
In-Reply-To: <1418660317-21750-1-git-send-email-martink@posteo.de>
---
drivers/hwmon/jc42.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c
index 388f8bc..335a2de 100644
--- a/drivers/hwmon/jc42.c
+++ b/drivers/hwmon/jc42.c
@@ -31,6 +31,7 @@
#include <linux/hwmon-sysfs.h>
#include <linux/err.h>
#include <linux/mutex.h>
+#include <linux/bitops.h>
/* Addresses to scan */
static const unsigned short normal_i2c[] = {
@@ -215,9 +216,7 @@ static int jc42_temp_from_reg(s16 reg)
{
reg &= 0x1fff;
- /* sign extend register */
- if (reg & 0x1000)
- reg |= 0xf000;
+ reg = sign_extend16(reg, 12);
/* convert from 0.0625 to 0.001 resolution */
return reg * 125 / 2;
--
2.1.3
next prev parent reply other threads:[~2014-12-15 16:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-15 16:18 add sign-extend functions for 8 and 16 bit values Martin Kepplinger
2014-12-15 16:18 ` [PATCH 1/6] bitops.h: add sign_extend8 function Martin Kepplinger
2014-12-15 16:18 ` [PATCH 2/6] bitops.h: add sign_extend16 function Martin Kepplinger
2014-12-15 17:58 ` Martin Kepplinger
2014-12-15 16:18 ` Martin Kepplinger [this message]
2014-12-15 21:29 ` [PATCH 3/6] hwmon: jc42: use bitops' sign_extend16 Guenter Roeck
2014-12-16 7:17 ` Martin Kepplinger
2015-01-11 10:34 ` Martin Kepplinger
2015-01-11 16:52 ` Guenter Roeck
2015-01-12 17:36 ` Martin Kepplinger
2014-12-15 16:18 ` [PATCH 4/6] input: gtco: use bitops' sign_extend8 Martin Kepplinger
2014-12-15 16:18 ` [PATCH 5/6] rtc: use sign_extend8 instead of manual conversion Martin Kepplinger
2014-12-15 16:18 ` [PATCH 6/6] media: stb0899: use sign_extend8 instead of manual work Martin Kepplinger
2014-12-15 17:17 ` add sign-extend functions for 8 and 16 bit values Peter Zijlstra
2014-12-15 17:54 ` [PATCH] bitops.h: add sign_extend64() function Martin Kepplinger
2014-12-15 18:06 ` Martin Kepplinger
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