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-rw-r--r--drivers/misc/sgi-gru/gruprocfs.c13
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index ccd4408a26c7..3f2375c5ba5b 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -161,14 +161,15 @@ static int options_show(struct seq_file *s, void *p)
161static ssize_t options_write(struct file *file, const char __user *userbuf, 161static ssize_t options_write(struct file *file, const char __user *userbuf,
162 size_t count, loff_t *data) 162 size_t count, loff_t *data)
163{ 163{
164 unsigned long val; 164 char buf[20];
165 char buf[80];
166 165
167 if (strncpy_from_user(buf, userbuf, sizeof(buf) - 1) < 0) 166 if (count >= sizeof(buf))
167 return -EINVAL;
168 if (copy_from_user(buf, userbuf, count))
168 return -EFAULT; 169 return -EFAULT;
169 buf[count - 1] = '\0'; 170 buf[count] = '\0';
170 if (!strict_strtoul(buf, 10, &val)) 171 if (strict_strtoul(buf, 0, &gru_options))
171 gru_options = val; 172 return -EINVAL;
172 173
173 return count; 174 return count;
174} 175}