From: Nishanth Aravamudan Date: Sat, 10 Sep 2005 07:27:30 +0000 (-0700) Subject: [PATCH] drivers/char: fix-up schedule_timeout() usage X-Git-Tag: firefly_0821_release~41300 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=da4cd8dfe18ee901b880f94ca0fa79d5cc1cd0eb;p=firefly-linux-kernel-4.4.55.git [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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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(¤t->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))