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From: Arnd Bergmann <arnd@arndb.de>
To: linux-kernel@vger.kernel.org, Tejun Heo <tj@kernel.org>
Cc: Damien Le Moal <damien.lemoal@wdc.com>,
	Arnd Bergmann <arnd@arndb.de>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	dri-devel@lists.freedesktop.org, linux-ide@vger.kernel.org,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Hannes Reinecke <hare@suse.de>,
	Adam Manzanares <adam.manzanares@wdc.com>,
	akpm@linux-foundation.org,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Guenter Roeck <linux@roeck-us.net>,
	linux-media@vger.kernel.org
Subject: [PATCH, RESEND 02/14] ata: avoid gcc-7 warning in ata_timing_quantize
Date: Fri, 14 Jul 2017 11:25:14 +0200	[thread overview]
Message-ID: <20170714092540.1217397-3-arnd@arndb.de> (raw)
In-Reply-To: <20170714092540.1217397-1-arnd@arndb.de>

gcc-7 warns about the result of a constant multiplication used as
a boolean:

drivers/ata/libata-core.c: In function 'ata_timing_quantize':
drivers/ata/libata-core.c:3164:30: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]

This slightly rearranges the macro to simplify the code and avoid
the warning at the same time.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/ata/libata-core.c | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index fa7dd4394c02..450059dd06ba 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3231,19 +3231,19 @@ static const struct ata_timing ata_timing[] = {
 };
 
 #define ENOUGH(v, unit)		(((v)-1)/(unit)+1)
-#define EZ(v, unit)		((v)?ENOUGH(v, unit):0)
+#define EZ(v, unit)		((v)?ENOUGH(((v) * 1000), unit):0)
 
 static void ata_timing_quantize(const struct ata_timing *t, struct ata_timing *q, int T, int UT)
 {
-	q->setup	= EZ(t->setup      * 1000,  T);
-	q->act8b	= EZ(t->act8b      * 1000,  T);
-	q->rec8b	= EZ(t->rec8b      * 1000,  T);
-	q->cyc8b	= EZ(t->cyc8b      * 1000,  T);
-	q->active	= EZ(t->active     * 1000,  T);
-	q->recover	= EZ(t->recover    * 1000,  T);
-	q->dmack_hold	= EZ(t->dmack_hold * 1000,  T);
-	q->cycle	= EZ(t->cycle      * 1000,  T);
-	q->udma		= EZ(t->udma       * 1000, UT);
+	q->setup	= EZ(t->setup,       T);
+	q->act8b	= EZ(t->act8b,       T);
+	q->rec8b	= EZ(t->rec8b,       T);
+	q->cyc8b	= EZ(t->cyc8b,       T);
+	q->active	= EZ(t->active,      T);
+	q->recover	= EZ(t->recover,     T);
+	q->dmack_hold	= EZ(t->dmack_hold,  T);
+	q->cycle	= EZ(t->cycle,       T);
+	q->udma		= EZ(t->udma,       UT);
 }
 
 void ata_timing_merge(const struct ata_timing *a, const struct ata_timing *b,
-- 
2.9.0

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  parent reply	other threads:[~2017-07-14  9:27 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-14  9:25 [PATCH 00/14] gcc-7 warnings Arnd Bergmann
2017-07-14  9:25 ` [PATCH, RESEND 01/14] ide: avoid warning for timings calculation Arnd Bergmann
2017-07-14  9:25 ` Arnd Bergmann [this message]
2017-07-15 10:56   ` [PATCH, RESEND 02/14] ata: avoid gcc-7 warning in ata_timing_quantize Tejun Heo
2017-07-14  9:25 ` [PATCH, RESEND 03/14] drm/vmwgfx: avoid gcc-7 parentheses warning Arnd Bergmann
2017-07-14 10:11   ` Jani Nikula
2017-07-14 19:21   ` Linus Torvalds
2017-07-14 19:23     ` Linus Torvalds
2017-07-14 20:28       ` Arnd Bergmann
2017-07-17 13:15         ` Sinclair Yeh
2017-07-14  9:25 ` [PATCH 04/14] x86: math-emu: avoid -Wint-in-bool-context warning Arnd Bergmann
2017-07-14  9:25 ` [PATCH 05/14] isdn: isdnloop: suppress a gcc-7 warning Arnd Bergmann
2017-07-14 10:08   ` Joe Perches
2017-07-14 10:37     ` Arnd Bergmann
2017-07-15  4:20       ` Kevin Easton
2017-07-14  9:25 ` [PATCH 06/14] acpi: thermal: fix gcc-6/ccache warning Arnd Bergmann
2017-07-14  9:25 ` [PATCH 07/14] proc/kcore: hide a harmless warning Arnd Bergmann
2017-07-14 12:28   ` Ard Biesheuvel
2017-07-18 19:53     ` Arnd Bergmann
2017-07-18 19:55       ` Ard Biesheuvel
2017-07-18 20:01         ` Arnd Bergmann
2017-07-18 20:07           ` Ard Biesheuvel
2017-07-18 20:21             ` Arnd Bergmann
2017-07-14  9:25 ` [PATCH 08/14] Input: adxl34x - fix gcc-7 -Wint-in-bool-context warning Arnd Bergmann
2017-07-14 19:24   ` Linus Torvalds
2017-07-14 20:17     ` Arnd Bergmann
2017-07-14 21:40       ` Dmitry Torokhov
2017-07-14  9:30 ` [PATCH 09/14] SFI: fix tautological-compare warning Arnd Bergmann
2017-07-14  9:31 ` [PATCH 10/14] staging:iio:resolver:ad2s1210 fix negative IIO_ANGL_VEL read Arnd Bergmann
2017-07-15 11:42   ` Jonathan Cameron
2017-07-14  9:31 ` [PATCH 11/14] IB/uverbs: fix gcc-7 type warning Arnd Bergmann
2017-07-14  9:46   ` Leon Romanovsky
2017-07-14  9:31 ` [PATCH 12/14] drm/nouveau/clk: fix gcc-7 -Wint-in-bool-context warning Arnd Bergmann
2017-07-14  9:31 ` [PATCH 13/14] iopoll: avoid " Arnd Bergmann
2017-07-14  9:55   ` Joe Perches
2017-07-14 10:22     ` Arnd Bergmann
2017-07-14  9:36 ` [PATCH 14/14] [media] fix warning on v4l2_subdev_call() result interpreted as bool Arnd Bergmann
2017-07-14 12:05   ` Dan Carpenter
2017-07-14 12:27     ` Arnd Bergmann
2017-07-14 12:55       ` Dan Carpenter
2017-07-14 13:09         ` Dan Carpenter
2017-07-14 19:32           ` Arnd Bergmann
2017-07-14 12:41   ` Dan Carpenter
2017-07-17 13:45   ` Hans Verkuil
2017-07-17 14:26     ` Arnd Bergmann
2017-07-17 14:28       ` Dan Carpenter
2017-07-17 14:32       ` Hans Verkuil
2017-07-17 14:35       ` Hans Verkuil
2017-07-17 21:23         ` Arnd Bergmann
2017-07-14 10:29 ` [PATCH 00/14] gcc-7 warnings Greg Kroah-Hartman

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