[PATCH] drivers/char: fix-up schedule_timeout() usage

Use schedule_timeout_interruptible() instead of
set_current_state()/schedule_timeout() to reduce kernel size.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 17 insertions, 36 deletions

diff --git a/drivers/char/ftape/lowlevel/fdc-io.c b/drivers/char/ftape/lowlevel/fdc-io.c
index 1704a2a57048..b2e0928e8428 100644
--- a/drivers/char/ftape/lowlevel/fdc-io.c
+++ b/drivers/char/ftape/lowlevel/fdc-io.c
@@ -387,10 +387,8 @@ int fdc_interrupt_wait(unsigned int time)
 
         set_current_state(TASK_INTERRUPTIBLE);
         add_wait_queue(&ftape_wait_intr, &wait);
-        while (!ft_interrupt_seen && timeout) {
-                set_current_state(TASK_INTERRUPTIBLE);
-                timeout = schedule_timeout(timeout);
-        }
+        while (!ft_interrupt_seen && timeout)
+                timeout = schedule_timeout_interruptible(timeout);
 
         spin_lock_irq(&current->sighand->siglock);
         current->blocked = old_sigmask;
diff --git a/drivers/char/hw_random.c b/drivers/char/hw_random.c
index 3480535a09c5..6f673d2de0b1 100644
--- a/drivers/char/hw_random.c
+++ b/drivers/char/hw_random.c
@@ -513,10 +513,7 @@ static ssize_t rng_dev_read (struct file *filp, char __user *buf, size_t size,
                         return ret ? : -EAGAIN;
 
                 if(need_resched())
-                {
-                        current->state = TASK_INTERRUPTIBLE;
-                        schedule_timeout(1);
-                }
+                        schedule_timeout_interruptible(1);
                 else
                         udelay(200);    /* FIXME: We could poll for 250uS ?? */
 
diff --git a/drivers/char/ip2/i2lib.c b/drivers/char/ip2/i2lib.c
index 82c5f30375ac..ba85eb1b6ec7 100644
--- a/drivers/char/ip2/i2lib.c
+++ b/drivers/char/ip2/i2lib.c
@@ -655,8 +655,7 @@ i2QueueCommands(int type, i2ChanStrPtr pCh, int timeout, int nCommands,
                         timeout--;   // So negative values == forever
                 
                 if (!in_interrupt()) {
-                        current->state = TASK_INTERRUPTIBLE;
-                        schedule_timeout(1);    // short nap 
+                        schedule_timeout_interruptible(1);      // short nap
                 } else {
                         // we cannot sched/sleep in interrrupt silly
                         return 0;   
@@ -1132,8 +1131,7 @@ i2Output(i2ChanStrPtr pCh, const char *pSource, int count, int user )
 
                                         ip2trace (CHANN, ITRC_OUTPUT, 61, 0 );
 
-                                        current->state = TASK_INTERRUPTIBLE;
-                                        schedule_timeout(2);
+                                        schedule_timeout_interruptible(2);
                                         if (signal_pending(current)) {
                                                 break;
                                         }
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 278f84104996..b6e5cbfb09f8 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -1920,8 +1920,7 @@ static int try_get_dev_id(struct smi_info *smi_info)
         for (;;)
         {
                 if (smi_result == SI_SM_CALL_WITH_DELAY) {
-                        set_current_state(TASK_UNINTERRUPTIBLE);
-                        schedule_timeout(1);
+                        schedule_timeout_uninterruptible(1);
                         smi_result = smi_info->handlers->event(
                                 smi_info->si_sm, 100);
                 }
@@ -2256,10 +2255,8 @@ static int init_one_smi(int intf_num, struct smi_info **smi)
 
         /* Wait for the timer to stop.  This avoids problems with race
            conditions removing the timer here. */
-        while (! new_smi->timer_stopped) {
-                set_current_state(TASK_UNINTERRUPTIBLE);
-                schedule_timeout(1);
-        }
+        while (!new_smi->timer_stopped)
+                schedule_timeout_uninterruptible(1);
 
  out_err:
         if (new_smi->intf)
@@ -2379,17 +2376,14 @@ static void __exit cleanup_one_si(struct smi_info *to_clean)
 
         /* Wait for the timer to stop.  This avoids problems with race
            conditions removing the timer here. */
-        while (! to_clean->timer_stopped) {
-                set_current_state(TASK_UNINTERRUPTIBLE);
-                schedule_timeout(1);
-        }
+        while (!to_clean->timer_stopped)
+                schedule_timeout_uninterruptible(1);
 
         /* Interrupts and timeouts are stopped, now make sure the
            interface is in a clean state. */
         while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) {
                 poll(to_clean);
-                set_current_state(TASK_UNINTERRUPTIBLE);
-                schedule_timeout(1);
+                schedule_timeout_uninterruptible(1);
         }
 
         rv = ipmi_unregister_smi(to_clean->intf);
diff --git a/drivers/char/ipmi/ipmi_watchdog.c b/drivers/char/ipmi/ipmi_watchdog.c
index e71aaae855ad..2da64bf7469c 100644
--- a/drivers/char/ipmi/ipmi_watchdog.c
+++ b/drivers/char/ipmi/ipmi_watchdog.c
@@ -1037,10 +1037,8 @@ static __exit void ipmi_unregister_watchdog(void)
         /* Wait to make sure the message makes it out.  The lower layer has
            pointers to our buffers, we want to make sure they are done before
            we release our memory. */
-        while (atomic_read(&set_timeout_tofree)) {
-                set_current_state(TASK_UNINTERRUPTIBLE);
-                schedule_timeout(1);
-        }
+        while (atomic_read(&set_timeout_tofree))
+                schedule_timeout_uninterruptible(1);
 
         /* Disconnect from IPMI. */
         rv = ipmi_destroy_user(watchdog_user);
diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index d0ef1ae41298..45d012d85e8c 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1058,8 +1058,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
                  */
                 timeout = jiffies + HZ;
                 while (!(inb(info->base + UART_LSR) & UART_LSR_TEMT)) {
-                        set_current_state(TASK_INTERRUPTIBLE);
-                        schedule_timeout(5);
+                        schedule_timeout_interruptible(5);
                         if (time_after(jiffies, timeout))
                                 break;
                 }
@@ -1080,10 +1079,8 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
         info->event = 0;
         info->tty = NULL;
         if (info->blocked_open) {
-                if (info->close_delay) {
-                        set_current_state(TASK_INTERRUPTIBLE);
-                        schedule_timeout(info->close_delay);
-                }
+                if (info->close_delay)
+                        schedule_timeout_interruptible(info->close_delay);
                 wake_up_interruptible(&info->open_wait);
         }
 
@@ -1801,8 +1798,7 @@ static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)
 #ifdef SERIAL_DEBUG_RS_WAIT_UNTIL_SENT
                 printk("lsr = %d (jiff=%lu)...", lsr, jiffies);
 #endif
-                set_current_state(TASK_INTERRUPTIBLE);
-                schedule_timeout(char_time);
+                schedule_timeout_interruptible(char_time);
                 if (signal_pending(current))
                         break;
                 if (timeout && time_after(jiffies, orig_jiffies + timeout))