drivers: Push down BKL into various drivers

These are the last remaining device drivers using
the ->ioctl file operation in the drivers directory
(except from v4l drivers).

[fweisbec: drop i8k pushdown as it has been done from
procfs pushdown branch already]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>

2 files changed, 11 insertions, 8 deletions

diff --git a/drivers/hwmon/fschmd.c b/drivers/hwmon/fschmd.c
index 0627f7a5b9b8..b7ca2a9676cf 100644
--- a/drivers/hwmon/fschmd.c
+++ b/drivers/hwmon/fschmd.c
@@ -38,6 +38,7 @@
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
+#include <linux/smp_lock.h>
 #include <linux/err.h>
 #include <linux/mutex.h>
 #include <linux/sysfs.h>
@@ -847,8 +848,7 @@ static ssize_t watchdog_write(struct file *filp, const char __user *buf,
         return count;
 }
 
-static int watchdog_ioctl(struct inode *inode, struct file *filp,
-        unsigned int cmd, unsigned long arg)
+static long watchdog_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 {
         static struct watchdog_info ident = {
                 .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT |
@@ -858,6 +858,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         int i, ret = 0;
         struct fschmd_data *data = filp->private_data;
 
+        lock_kernel();
         switch (cmd) {
         case WDIOC_GETSUPPORT:
                 ident.firmware_version = data->revision;
@@ -914,7 +915,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         default:
                 ret = -ENOTTY;
         }
-
+        unlock_kernel();
         return ret;
 }
 
@@ -924,7 +925,7 @@ static const struct file_operations watchdog_fops = {
         .open = watchdog_open,
         .release = watchdog_release,
         .write = watchdog_write,
-        .ioctl = watchdog_ioctl,
+        .unlocked_ioctl = watchdog_ioctl,
 };
 
 
diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
index 612807d97155..697202e27891 100644
--- a/drivers/hwmon/w83793.c
+++ b/drivers/hwmon/w83793.c
@@ -35,6 +35,7 @@
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/hwmon.h>
+#include <linux/smp_lock.h>
 #include <linux/hwmon-vid.h>
 #include <linux/hwmon-sysfs.h>
 #include <linux/err.h>
@@ -1319,8 +1320,8 @@ static ssize_t watchdog_write(struct file *filp, const char __user *buf,
         return count;
 }
 
-static int watchdog_ioctl(struct inode *inode, struct file *filp,
-                          unsigned int cmd, unsigned long arg)
+static long watchdog_ioctl(struct file *filp, unsigned int cmd,
+                           unsigned long arg)
 {
         static struct watchdog_info ident = {
                 .options = WDIOF_KEEPALIVEPING |
@@ -1332,6 +1333,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         int val, ret = 0;
         struct w83793_data *data = filp->private_data;
 
+        lock_kernel();
         switch (cmd) {
         case WDIOC_GETSUPPORT:
                 if (!nowayout)
@@ -1385,7 +1387,7 @@ static int watchdog_ioctl(struct inode *inode, struct file *filp,
         default:
                 ret = -ENOTTY;
         }
-
+        unlock_kernel();
         return ret;
 }
 
@@ -1395,7 +1397,7 @@ static const struct file_operations watchdog_fops = {
         .open = watchdog_open,
         .release = watchdog_close,
         .write = watchdog_write,
-        .ioctl = watchdog_ioctl,
+        .unlocked_ioctl = watchdog_ioctl,
 };
 
 /*