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authorJiri Slaby <jirislaby@gmail.com>2007-02-12 00:52:31 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-02-12 09:48:30 -0800
commit40565f1962c5be9b9e285e05af01ab7771534868 (patch)
treeae84097778a8adfc5a9aad8a5428fe803d54346a /drivers/char/nwbutton.c
parentd096f3e9898d469493fc0afe88d7285c4bdc3ce2 (diff)
downloadlinux-40565f1962c5be9b9e285e05af01ab7771534868.tar.gz
[PATCH] Char: timers cleanup
- Use timer macros to set function and data members and to modify expiration time. - Use DEFINE_TIMER for global timers and do not init them at run-time in these cases. - del_timer_sync is common in most cases -- we want to wait for timer function if it's still running. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Fulghum <paulkf@microgate.com> Cc: Kylene Jo Hall <kjhall@us.ibm.com> Cc: Wim Van Sebroeck <wim@iguana.be> Acked-by: Dmitry Torokhov <dtor@mail.ru> (Input bits) Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char/nwbutton.c')
-rw-r--r--drivers/char/nwbutton.c13
1 files changed, 5 insertions, 8 deletions
diff --git a/drivers/char/nwbutton.c b/drivers/char/nwbutton.c
index 2d264971d83..2604246501e 100644
--- a/drivers/char/nwbutton.c
+++ b/drivers/char/nwbutton.c
@@ -23,8 +23,11 @@
#define __NWBUTTON_C /* Tell the header file who we are */
#include "nwbutton.h"
+static void button_sequence_finished (unsigned long parameters);
+
static int button_press_count; /* The count of button presses */
-static struct timer_list button_timer; /* Times for the end of a sequence */
+/* Times for the end of a sequence */
+static DEFINE_TIMER(button_timer, button_sequence_finished, 0, 0);
static DECLARE_WAIT_QUEUE_HEAD(button_wait_queue); /* Used for blocking read */
static char button_output_buffer[32]; /* Stores data to write out of device */
static int bcount; /* The number of bytes in the buffer */
@@ -146,14 +149,8 @@ static void button_sequence_finished (unsigned long parameters)
static irqreturn_t button_handler (int irq, void *dev_id)
{
- if (button_press_count) {
- del_timer (&button_timer);
- }
button_press_count++;
- init_timer (&button_timer);
- button_timer.function = button_sequence_finished;
- button_timer.expires = (jiffies + bdelay);
- add_timer (&button_timer);
+ mod_timer(&button_timer, jiffies + bdelay);
return IRQ_HANDLED;
}