aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/parisc/led.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/parisc/led.c')
-rw-r--r--drivers/parisc/led.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c
index 18dff43b8bd2..c5c14dd3734f 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