[PATCH] cpm_uart: use schedule_timeout instead of direct call to schedule

use schedule_timeout instead of direct call to schedule

Signed-off-by: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
Signed-off-by: Kumar Gala <kumar.gala@freescale.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/serial/cpm_uart/cpm_uart_core.c b/drivers/serial/cpm_uart/cpm_uart_core.c
index 282b323..25825f2 100644 (file)
--- a/drivers/serial/cpm_uart/cpm_uart_core.c
+++ b/drivers/serial/cpm_uart/cpm_uart_core.c
@@ -403,10 +403,8 @@ static int cpm_uart_startup(struct uart_port *port)
 
 inline void cpm_uart_wait_until_send(struct uart_cpm_port *pinfo)
 {
-       unsigned long target_jiffies = jiffies + pinfo->wait_closing;
-
-       while (!time_after(jiffies, target_jiffies))
-               schedule();
+       set_current_state(TASK_UNINTERRUPTIBLE);
+       schedule_timeout(pinfo->wait_closing);
 }
 
 /*
@@ -425,9 +423,12 @@ static void cpm_uart_shutdown(struct uart_port *port)
        /* If the port is not the console, disable Rx and Tx. */
        if (!(pinfo->flags & FLAG_CONSOLE)) {
                /* Wait for all the BDs marked sent */
-               while(!cpm_uart_tx_empty(port))
+               while(!cpm_uart_tx_empty(port)) {
+                       set_current_state(TASK_UNINTERRUPTIBLE);
                        schedule_timeout(2);
-               if(pinfo->wait_closing)
+               }
+
+               if (pinfo->wait_closing)
                        cpm_uart_wait_until_send(pinfo);
 
                /* Stop uarts */