[patch 7/8] serial/serial_core: replace schedule_timeout() with msleep()/msleep_interruptible()

janitor_at_sternwelten.at
Date: 10/31/04

  • Next message: Rik van Riel: "Re: in-kernel GUI project" 
    To: rmk+lkml@arm.linux.org.uk
Date:	Sun, 31 Oct 2004 00:47:19 +0200

    Any comments would be appreciated.

    Description: Use msleep()/msleep_interruptible() [as appropriate]
    instead of schedule_timeout() to guarantee the task delays
    as expected.

    Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
    Signed-off-by: Maximilian Attems <janitor@sternwelten.at> 

    ---
 linux-2.6.10-rc1-max/drivers/serial/serial_core.c |   11 ++++-------
 1 files changed, 4 insertions(+), 7 deletions(-)
diff -puN drivers/serial/serial_core.c~msleep+msleep_interruptible-drivers_serial_serial_core drivers/serial/serial_core.c
--- linux-2.6.10-rc1/drivers/serial/serial_core.c~msleep+msleep_interruptible-drivers_serial_serial_core	2004-10-24 17:05:36.000000000 +0200
+++ linux-2.6.10-rc1-max/drivers/serial/serial_core.c	2004-10-24 17:05:36.000000000 +0200
@@ -32,6 +32,7 @@
 #include <linux/smp_lock.h>
 #include <linux/device.h>
 #include <linux/serial.h> /* for serial_state and serial_icounter_struct */
+#include <linux/delay.h>
 
 #include <asm/irq.h>
 #include <asm/uaccess.h>
@@ -1272,8 +1273,7 @@ static void uart_close(struct tty_struct
 
 	if (state->info->blocked_open) {
 		if (state->close_delay) {
-			set_current_state(TASK_INTERRUPTIBLE);
-			schedule_timeout(state->close_delay);
+			msleep_interruptible(jiffies_to_msecs(state->close_delay));
 		}
 	} else if (!uart_console(port)) {
 		uart_change_pm(state, 3);
@@ -1338,8 +1338,7 @@ static void uart_wait_until_sent(struct 
 	 * we wait.
 	 */
 	while (!port->ops->tx_empty(port)) {
-		set_current_state(TASK_INTERRUPTIBLE);
-		schedule_timeout(char_time);
+		msleep_interruptible(jiffies_to_msecs(char_time));
 		if (signal_pending(current))
 			break;
 		if (time_after(jiffies, expire))
@@ -1896,10 +1895,8 @@ int uart_suspend_port(struct uart_driver
 		 * Wait for the transmitter to empty.
 		 */
 		while (!ops->tx_empty(port)) {
-			set_current_state(TASK_UNINTERRUPTIBLE);
-			schedule_timeout(10*HZ/1000);
+			msleep(10);
 		}
-		set_current_state(TASK_RUNNING);
 
 		ops->shutdown(port);
 	}
_
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/
  • Next message: Rik van Riel: "Re: in-kernel GUI project"

    Relevant Pages