From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: linux-input@vger.kernel.org
Cc: Benjamin Tissoires <benjamin.tissoires@redhat.com>,
Peter Hutterer <peter.hutterer@who-t.net>,
linux-kernel@vger.kernel.org
Subject: [PATCH] Input: synaptics - do not mix logical and bitwise operations
Date: Thu, 23 Mar 2017 10:35:45 -0700 [thread overview]
Message-ID: <20170323173545.GA29239@dtor-ws> (raw)
Let's stop using !!x to reduce value of trackstick button expression to 0/1
and use shift instead. This removes the following sparse warning:
CHECK drivers/input/mouse/synaptics.c
drivers/input/mouse/synaptics.c:943:79: warning: dubious: !x | y
Also, the bits we are testing are not capabilities, so lets drop "_CAP"
suffix from macro names.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/mouse/synaptics.c | 6 +++---
drivers/input/mouse/synaptics.h | 6 +++---
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index 86ed45bda7bb..dd6caa0e7e09 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -940,9 +940,9 @@ static void synaptics_report_ext_buttons(struct psmouse *psmouse,
u8 pt_buttons;
/* The trackstick expects at most 3 buttons */
- pt_buttons = SYN_CAP_EXT_BUTTON_STICK_L(hw->ext_buttons) |
- SYN_CAP_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
- SYN_CAP_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
+ pt_buttons = SYN_EXT_BUTTON_STICK_L(hw->ext_buttons) |
+ SYN_EXT_BUTTON_STICK_R(hw->ext_buttons) << 1 |
+ SYN_EXT_BUTTON_STICK_M(hw->ext_buttons) << 2;
serio_interrupt(priv->pt_port,
PSMOUSE_OOB_EXTRA_BTNS, SERIO_OOB_DATA);
diff --git a/drivers/input/mouse/synaptics.h b/drivers/input/mouse/synaptics.h
index fc93481cf183..31652d98b8f7 100644
--- a/drivers/input/mouse/synaptics.h
+++ b/drivers/input/mouse/synaptics.h
@@ -112,9 +112,9 @@
#define SYN_CAP_EXT_BUTTONS_STICK(ex10) ((ex10) & 0x010000)
#define SYN_CAP_SECUREPAD(ex10) ((ex10) & 0x020000)
-#define SYN_CAP_EXT_BUTTON_STICK_L(eb) (!!((eb) & 0x01))
-#define SYN_CAP_EXT_BUTTON_STICK_M(eb) (!!((eb) & 0x02))
-#define SYN_CAP_EXT_BUTTON_STICK_R(eb) (!!((eb) & 0x04))
+#define SYN_EXT_BUTTON_STICK_L(eb) (((eb) & BIT(0)) >> 0)
+#define SYN_EXT_BUTTON_STICK_M(eb) (((eb) & BIT(1)) >> 1)
+#define SYN_EXT_BUTTON_STICK_R(eb) (((eb) & BIT(2)) >> 2)
/* synaptics modes query bits */
#define SYN_MODE_ABSOLUTE(m) ((m) & (1 << 7))
--
2.12.1.500.gab5fba24ee-goog
--
Dmitry
next reply other threads:[~2017-03-23 17:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-23 17:35 Dmitry Torokhov [this message]
2017-03-23 18:30 ` [PATCH] Input: synaptics - do not mix logical and bitwise operations Benjamin Tissoires
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