patch-2.4.21 linux-2.4.21/drivers/char/i810_rng.c

• Lines: 33
• Date: 2003-06-13 07:51:33.000000000 -0700
• Orig file: linux-2.4.20/drivers/char/i810_rng.c
• Orig date: 2002-08-02 17:39:43.000000000 -0700

diff -urN linux-2.4.20/drivers/char/i810_rng.c linux-2.4.21/drivers/char/i810_rng.c
@@ -1,7 +1,7 @@
 /*
 
 	Hardware driver for Intel i810 Random Number Generator (RNG)
-	Copyright 2000,2001 Jeff Garzik <jgarzik@mandrakesoft.com>
+	Copyright 2000,2001 Jeff Garzik <jgarzik@pobox.com>
 	Copyright 2000,2001 Philipp Rumpf <prumpf@mandrakesoft.com>
 
 	Driver Web site:  http://sourceforge.net/projects/gkernel/
@@ -27,6 +27,7 @@
 #include <linux/miscdevice.h>
 #include <linux/smp_lock.h>
 #include <linux/mm.h>
+#include <linux/delay.h>
 
 #include <asm/io.h>
 #include <asm/uaccess.h>
@@ -243,8 +244,13 @@
 		if (filp->f_flags & O_NONBLOCK)
 			return ret ? : -EAGAIN;
 
-		current->state = TASK_INTERRUPTIBLE;
-		schedule_timeout(1);
+		if (current->need_resched)
+		{
+			current->state = TASK_INTERRUPTIBLE;
+			schedule_timeout(1);
+		}
+		else
+			udelay(200);
 
 		if (signal_pending (current))
 			return ret ? : -ERESTARTSYS;