diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/parisc/led.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index 188bc8496a26..d02be78a4138 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c | |||
| @@ -176,16 +176,18 @@ static ssize_t led_proc_write(struct file *file, const char *buf, | |||
| 176 | size_t count, loff_t *pos) | 176 | size_t count, loff_t *pos) |
| 177 | { | 177 | { |
| 178 | void *data = PDE(file->f_path.dentry->d_inode)->data; | 178 | void *data = PDE(file->f_path.dentry->d_inode)->data; |
| 179 | char *cur, lbuf[count + 1]; | 179 | char *cur, lbuf[32]; |
| 180 | int d; | 180 | int d; |
| 181 | 181 | ||
| 182 | if (!capable(CAP_SYS_ADMIN)) | 182 | if (!capable(CAP_SYS_ADMIN)) |
| 183 | return -EACCES; | 183 | return -EACCES; |
| 184 | 184 | ||
| 185 | memset(lbuf, 0, count + 1); | 185 | if (count >= sizeof(lbuf)) |
| 186 | count = sizeof(lbuf)-1; | ||
| 186 | 187 | ||
| 187 | if (copy_from_user(lbuf, buf, count)) | 188 | if (copy_from_user(lbuf, buf, count)) |
| 188 | return -EFAULT; | 189 | return -EFAULT; |
| 190 | lbuf[count] = 0; | ||
| 189 | 191 | ||
| 190 | cur = lbuf; | 192 | cur = lbuf; |
| 191 | 193 | ||
