---

yaml
---
r: 104527
b: refs/heads/master
c: 4cddb88
h: refs/heads/master
i:
  104525: dbfa13b
  104523: 3b8d1cc
  104519: 7e898b8
  104511: 13a002a
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fb86611f8f3251865784d5938a485a0238ec1427
+refs/heads/master: 4cddb886a4d0e5cc7a790151740bfb87b568c97d

trunk/drivers/char/mmtimer.c

@@ -32,6 +32,7 @@
 #include <linux/interrupt.h>
 #include <linux/time.h>
 #include <linux/math64.h>
+#include <linux/smp_lock.h>
 
 #include <asm/uaccess.h>
 #include <asm/sn/addrs.h>
@@ -57,8 +58,8 @@ extern unsigned long sn_rtc_cycles_per_second;
 
 #define rtc_time()              (*RTC_COUNTER_ADDR)
 
-static int mmtimer_ioctl(struct inode *inode, struct file *file,
-			 unsigned int cmd, unsigned long arg);
+static long mmtimer_ioctl(struct file *file, unsigned int cmd,
+						unsigned long arg);
 static int mmtimer_mmap(struct file *file, struct vm_area_struct *vma);
 
 /*
@@ -67,9 +68,9 @@ static int mmtimer_mmap(struct file *file, struct vm_area_struct *vma);
 static unsigned long mmtimer_femtoperiod = 0;
 
 static const struct file_operations mmtimer_fops = {
-	.owner =	THIS_MODULE,
-	.mmap =		mmtimer_mmap,
-	.ioctl =	mmtimer_ioctl,
+	.owner = THIS_MODULE,
+	.mmap =	mmtimer_mmap,
+	.unlocked_ioctl = mmtimer_ioctl,
 };
 
 /*
@@ -339,7 +340,6 @@ static void mmtimer_set_next_timer(int nodeid)
 
 /**
  * mmtimer_ioctl - ioctl interface for /dev/mmtimer
- * @inode: inode of the device
  * @file: file structure for the device
  * @cmd: command to execute
  * @arg: optional argument to command
@@ -365,11 +365,13 @@ static void mmtimer_set_next_timer(int nodeid)
  * %MMTIMER_GETCOUNTER - Gets the current value in the counter and places it
  * in the address specified by @arg.
  */
-static int mmtimer_ioctl(struct inode *inode, struct file *file,
-			 unsigned int cmd, unsigned long arg)
+static long mmtimer_ioctl(struct file *file, unsigned int cmd,
+						unsigned long arg)
 {
 	int ret = 0;
 
+	lock_kernel();
+
 	switch (cmd) {
 	case MMTIMER_GETOFFSET:	/* offset of the counter */
 		/*
@@ -384,15 +386,14 @@ static int mmtimer_ioctl(struct inode *inode, struct file *file,
 	case MMTIMER_GETRES: /* resolution of the clock in 10^-15 s */
 		if(copy_to_user((unsigned long __user *)arg,
 				&mmtimer_femtoperiod, sizeof(unsigned long)))
-			return -EFAULT;
+			ret = -EFAULT;
 		break;
 
 	case MMTIMER_GETFREQ: /* frequency in Hz */
 		if(copy_to_user((unsigned long __user *)arg,
 				&sn_rtc_cycles_per_second,
 				sizeof(unsigned long)))
-			return -EFAULT;
-		ret = 0;
+			ret = -EFAULT;
 		break;
 
 	case MMTIMER_GETBITS: /* number of bits in the clock */
@@ -406,13 +407,13 @@ static int mmtimer_ioctl(struct inode *inode, struct file *file,
 	case MMTIMER_GETCOUNTER:
 		if(copy_to_user((unsigned long __user *)arg,
 				RTC_COUNTER_ADDR, sizeof(unsigned long)))
-			return -EFAULT;
+			ret = -EFAULT;
 		break;
 	default:
-		ret = -ENOSYS;
+		ret = -ENOTTY;
 		break;
 	}
-
+	unlock_kernel();
 	return ret;
 }