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* [PATCH] Input: Initialize input_no by -1
@ 2014-11-25 16:08 Aniroop Mathur
  2014-11-28 16:10 ` Aniroop Mathur
  0 siblings, 1 reply; 8+ messages in thread
From: Aniroop Mathur @ 2014-11-25 16:08 UTC (permalink / raw)
  To: dmitry.torokhov, linux-input; +Cc: aniroop.mathur

This patch initializes input_no by -1 in order to avoid extra subtraction
operation performed everytime for allocation of an input device.

Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com>
---
 drivers/input/input.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 29ca0bb..01fe49e 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1774,7 +1774,7 @@ EXPORT_SYMBOL_GPL(input_class);
  */
 struct input_dev *input_allocate_device(void)
 {
-	static atomic_t input_no = ATOMIC_INIT(0);
+	static atomic_t input_no = ATOMIC_INIT(-1);
 	struct input_dev *dev;
 
 	dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
@@ -1789,7 +1789,7 @@ struct input_dev *input_allocate_device(void)
 		INIT_LIST_HEAD(&dev->node);
 
 		dev_set_name(&dev->dev, "input%ld",
-			     (unsigned long) atomic_inc_return(&input_no) - 1);
+			     (unsigned long) atomic_inc_return(&input_no));
 
 		__module_get(THIS_MODULE);
 	}
-- 
1.9.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread
* [PATCH] Input : Initialize input_no by -1
@ 2014-12-02 16:45 Aniroop Mathur
  2014-12-02 23:29 ` Dmitry Torokhov
  0 siblings, 1 reply; 8+ messages in thread
From: Aniroop Mathur @ 2014-12-02 16:45 UTC (permalink / raw)
  To: dmitry.torokhov, dtor, linux-input; +Cc: aniroop.mathur, a.mathur

This patch initializes input_no by -1 in order to avoid extra subtraction
operation performed everytime for allocation of an input device.

Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com>
---
 drivers/input/input.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 29ca0bb..01fe49e 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1774,7 +1774,7 @@ EXPORT_SYMBOL_GPL(input_class);
  */
 struct input_dev *input_allocate_device(void)
 {
-	static atomic_t input_no = ATOMIC_INIT(0);
+	static atomic_t input_no = ATOMIC_INIT(-1);
 	struct input_dev *dev;
 
 	dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
@@ -1789,7 +1789,7 @@ struct input_dev *input_allocate_device(void)
 		INIT_LIST_HEAD(&dev->node);
 
 		dev_set_name(&dev->dev, "input%ld",
-			     (unsigned long) atomic_inc_return(&input_no) - 1);
+			     (unsigned long) atomic_inc_return(&input_no));
 
 		__module_get(THIS_MODULE);
 	}
-- 
1.9.1


^ permalink raw reply related	[flat|nested] 8+ messages in thread
* [PATCH] Input: Initialize input_no by -1
@ 2014-11-21 18:48 Aniroop Mathur
  2014-11-24  3:20 ` Aniroop Mathur
  2014-11-25  8:40 ` Dmitry Torokhov
  0 siblings, 2 replies; 8+ messages in thread
From: Aniroop Mathur @ 2014-11-21 18:48 UTC (permalink / raw)
  To: Dmitry Torokhov, linux-input@vger.kernel.org

This patch initializes input_no by -1 in order to avoid extra subtraction
operation performed everytime for allocation of an input device.

Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com>
---
 drivers/input/input.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 29ca0bb..01fe49e 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1774,7 +1774,7 @@ EXPORT_SYMBOL_GPL(input_class);
  */
 struct input_dev *input_allocate_device(void)
 {
-       static atomic_t input_no = ATOMIC_INIT(0);
+       static atomic_t input_no = ATOMIC_INIT(-1);
        struct input_dev *dev;

        dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
@@ -1789,7 +1789,7 @@ struct input_dev *input_allocate_device(void)
                INIT_LIST_HEAD(&dev->node);

                dev_set_name(&dev->dev, "input%ld",
-                            (unsigned long) atomic_inc_return(&input_no) - 1);
+                            (unsigned long) atomic_inc_return(&input_no));

                __module_get(THIS_MODULE);
        }
-- 
1.9.1

^ permalink raw reply related	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2014-12-03  5:57 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
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2014-11-25 16:08 [PATCH] Input: Initialize input_no by -1 Aniroop Mathur
2014-11-28 16:10 ` Aniroop Mathur
  -- strict thread matches above, loose matches on Subject: below --
2014-12-02 16:45 [PATCH] Input : " Aniroop Mathur
2014-12-02 23:29 ` Dmitry Torokhov
2014-12-03  5:57   ` Dmitry Torokhov
2014-11-21 18:48 [PATCH] Input: " Aniroop Mathur
2014-11-24  3:20 ` Aniroop Mathur
2014-11-25  8:40 ` Dmitry Torokhov

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