diff options
Diffstat (limited to 'drivers/sbus/char/display7seg.c')
| -rw-r--r-- | drivers/sbus/char/display7seg.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c index 7baf1b64403..4ad4d2c9107 100644 --- a/drivers/sbus/char/display7seg.c +++ b/drivers/sbus/char/display7seg.c @@ -13,7 +13,7 @@ #include <linux/miscdevice.h> #include <linux/ioport.h> /* request_region */ #include <linux/slab.h> -#include <linux/smp_lock.h> +#include <linux/mutex.h> #include <linux/of.h> #include <linux/of_device.h> #include <asm/atomic.h> @@ -26,6 +26,7 @@ #define DRIVER_NAME "d7s" #define PFX DRIVER_NAME ": " +static DEFINE_MUTEX(d7s_mutex); static int sol_compat = 0; /* Solaris compatibility mode */ /* Solaris compatibility flag - @@ -74,7 +75,6 @@ static int d7s_open(struct inode *inode, struct file *f) { if (D7S_MINOR != iminor(inode)) return -ENODEV; - cycle_kernel_lock(); atomic_inc(&d7s_users); return 0; } @@ -110,7 +110,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg) if (D7S_MINOR != iminor(file->f_path.dentry->d_inode)) return -ENODEV; - lock_kernel(); + mutex_lock(&d7s_mutex); switch (cmd) { case D7SIOCWR: /* assign device register values we mask-out D7S_FLIP @@ -151,7 +151,7 @@ static long d7s_ioctl(struct file *file, unsigned int cmd, unsigned long arg) writeb(regs, p->regs); break; }; - unlock_kernel(); + mutex_unlock(&d7s_mutex); return error; } |