From: Martin Kepplinger <martink@posteo.de>
To: mingo@kernel.org
Cc: peterz@infradead.org, paulmck@linux.vnet.ibm.com, tytso@mit.edu,
maxime.coquelin@st.com, linux@roeck-us.net,
linux-kernel@vger.kernel.org,
Martin Kepplinger <martink@posteo.de>
Subject: [PATCH 4/4] hwmon: jc42: use bitops' sign_extend16
Date: Wed, 14 Jan 2015 17:56:41 +0100 [thread overview]
Message-ID: <1421254601-7242-5-git-send-email-martink@posteo.de> (raw)
In-Reply-To: <1421254601-7242-1-git-send-email-martink@posteo.de>
Signed-off-by: Martin Kepplinger <martink@posteo.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
---
drivers/hwmon/jc42.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/hwmon/jc42.c b/drivers/hwmon/jc42.c
index 388f8bc..d0582a3 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[] = {
@@ -213,11 +214,7 @@ static u16 jc42_temp_to_reg(int temp, bool extended)
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;
--
2.1.4
next prev parent reply other threads:[~2015-01-14 16:57 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-12 17:22 [PATCH v2] bitops.h: add sign_extend8(), 16 and 64 functions Martin Kepplinger
2015-01-12 17:28 ` [RFC] input: gtco: use bitops' sign_extend8 Martin Kepplinger
2015-01-12 17:28 ` [RFC] rtc: use sign_extend8 instead of manual conversion Martin Kepplinger
2015-01-12 17:28 ` [RFC] media: stb0899: use sign_extend8 instead of manual work Martin Kepplinger
2015-01-12 17:28 ` [RFC] hwmon: jc42: use bitops' sign_extend16 Martin Kepplinger
2015-01-12 19:53 ` Guenter Roeck
2015-01-12 19:48 ` [PATCH v2] bitops.h: add sign_extend8(), 16 and 64 functions Guenter Roeck
2015-01-14 16:56 ` [RFC PATCH 0/4] Example changes using proposed sign_extend functions Martin Kepplinger
2015-01-14 16:56 ` [PATCH 1/4] input: gtco: use bitops' sign_extend8 Martin Kepplinger
2015-01-14 16:56 ` [PATCH 2/4] rtc: use sign_extend8 instead of manual conversion Martin Kepplinger
2015-01-14 16:56 ` [PATCH 3/4] media: stb0899: use sign_extend8 instead of manual work Martin Kepplinger
2015-01-14 16:56 ` Martin Kepplinger [this message]
2015-01-18 19:06 ` [tip:core/types] bitops: Add sign_extend8(), 16 and 64 functions tip-bot for Martin Kepplinger
[not found] ` <CA+55aFyc7TbnLBi3rcQDrtkwg9TgDnb5dAfupMGSbTKZC6Xd0g@mail.gmail.com>
2015-01-19 1:11 ` Guenter Roeck
2015-01-19 4:00 ` Linus Torvalds
2015-01-20 12:30 ` [PATCH v3 0/2] bitops.h: add sign_extend64() API and improve doc Martin Kepplinger
2015-01-20 12:30 ` [PATCH 1/2] bitops.h: improve documentation for sign_extend32() Martin Kepplinger
2015-01-20 12:30 ` [PATCH 2/2] bitops.h: Add sign_extend64() API Martin Kepplinger
2015-01-19 10:04 ` [tip:core/types] bitops: Add sign_extend8(), 16 and 64 functions Peter Zijlstra
2015-01-21 20:22 ` H. Peter Anvin
2015-02-05 7:17 ` Ingo Molnar
2015-02-05 14:11 ` Guenter Roeck
2015-02-12 11:11 ` Example use of sign_extend64() Martin Kepplinger
2015-02-12 11:11 ` [RFC][PATCH] arch: sh: use sign_extend64() for sign extension Martin Kepplinger
2015-02-05 16:39 ` [tip:core/types] bitops: Add sign_extend8(), 16 and 64 functions H. Peter Anvin
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