gigaset: remove pointless locking

Remove pointless taking of spinlock around reading a single pointer-sized
or smaller variable.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 7 deletions

diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c
index e767afa55abf..da6f3acf9fd0 100644
--- a/drivers/isdn/gigaset/proc.c
+++ b/drivers/isdn/gigaset/proc.c
@@ -19,15 +19,9 @@
 static ssize_t show_cidmode(struct device *dev,
                             struct device_attribute *attr, char *buf)
 {
-        int ret;
-        unsigned long flags;
         struct cardstate *cs = dev_get_drvdata(dev);
 
-        spin_lock_irqsave(&cs->lock, flags);
-        ret = sprintf(buf, "%u\n", cs->cidmode);
-        spin_unlock_irqrestore(&cs->lock, flags);
-
-        return ret;
+        return sprintf(buf, "%u\n", cs->cidmode);
 }
 
 static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr,