Jun 30 2008

It looks at least odd to apply spin_unlock to a mutex. 

Author: Julia Lawall <julia@diku.dk>

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// 
@def@
declarer DEFINE_MUTEX;
identifier m;
@@

DEFINE_MUTEX(m);

@@
identifier def.m;
@@

(
- spin_lock(&m)
+ mutex_lock(&m)
|
- spin_unlock(&m)
+ mutex_unlock(&m)
)
// 

Signed-off-by: Julia Lawall 
Signed-off-by: Jesper Nilsson 

---
 arch/cris/arch-v10/drivers/pcf8563.c | 2 +-
 arch/cris/arch-v32/drivers/pcf8563.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
 
diff --git a/arch/cris/arch-v10/drivers/pcf8563.c b/arch/cris/arch-v10/drivers/pcf8563.c
index 52103d1..8769dc9 100644
--- a/arch/cris/arch-v10/drivers/pcf8563.c
+++ b/arch/cris/arch-v10/drivers/pcf8563.c
@@ -233,7 +233,7 @@ int pcf8563_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
 
 		if (copy_to_user((struct rtc_time *) arg, &tm,
 				 sizeof tm)) {
-			spin_unlock(&rtc_lock);
+			mutex_unlock(&rtc_lock);
 			return -EFAULT;
 		}
 
diff --git a/arch/cris/arch-v32/drivers/pcf8563.c b/arch/cris/arch-v32/drivers/pcf8563.c
index 53db387..f263ab5 100644
--- a/arch/cris/arch-v32/drivers/pcf8563.c
+++ b/arch/cris/arch-v32/drivers/pcf8563.c
@@ -229,7 +229,7 @@ int pcf8563_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
 
 		if (copy_to_user((struct rtc_time *) arg, &tm,
 				 sizeof tm)) {
-			spin_unlock(&rtc_lock);
+			mutex_unlock(&rtc_lock);
 			return -EFAULT;
 		}

qlambert