X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=drivers%2Ftelephony%2Fphonedev.c;h=4d74ba36c3a12b0d8acd19cd7115b154522f862b;hb=9063974cdbc5463528cb6aa60c91bc0267af7bbb;hp=bcea8d9b718ce782da7f1e3fdb20d4d278d9d00e;hpb=6208e77e7fa9e69f399fddc55b1cf9527fbde599;p=linux-2.6

diff --git a/drivers/telephony/phonedev.c b/drivers/telephony/phonedev.c
index bcea8d9b71..4d74ba36c3 100644
--- a/drivers/telephony/phonedev.c
+++ b/drivers/telephony/phonedev.c
@@ -23,6 +23,7 @@
 #include <linux/errno.h>
 #include <linux/phonedev.h>
 #include <linux/init.h>
+#include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include <asm/system.h>
 
@@ -53,6 +54,7 @@ static int phone_open(struct inode *inode, struct file *file)
 	if (minor >= PHONE_NUM_DEVICES)
 		return -ENODEV;
 
+	lock_kernel();
 	mutex_lock(&phone_lock);
 	p = phone_device[minor];
 	if (p)
@@ -79,6 +81,7 @@ static int phone_open(struct inode *inode, struct file *file)
 	fops_put(old_fops);
 end:
 	mutex_unlock(&phone_lock);
+	unlock_kernel();
 	return err;
 }