diff options
| -rw-r--r-- | drivers/media/radio/miropcm20-rds.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/media/radio/miropcm20-rds.c b/drivers/media/radio/miropcm20-rds.c index 06dfed9ef4c7..3e840f74d45c 100644 --- a/drivers/media/radio/miropcm20-rds.c +++ b/drivers/media/radio/miropcm20-rds.c @@ -12,6 +12,7 @@ #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/smp_lock.h> #include <linux/fs.h> #include <linux/miscdevice.h> #include <linux/delay.h> @@ -27,13 +28,16 @@ static int rds_f_open(struct inode *in, struct file *fi) if (rds_users) return -EBUSY; + lock_kernel(); rds_users++; if ((text_buffer=kmalloc(66, GFP_KERNEL)) == 0) { rds_users--; printk(KERN_NOTICE "aci-rds: Out of memory by open()...\n"); + unlock_kernel(); return -ENOMEM; } + unlock_kernel(); return 0; } |