diff options
| -rw-r--r-- | drivers/staging/mt7621-mmc/dbg.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/staging/mt7621-mmc/dbg.c b/drivers/staging/mt7621-mmc/dbg.c index 6e518dce9029..4fe4d2fd111e 100644 --- a/drivers/staging/mt7621-mmc/dbg.c +++ b/drivers/staging/mt7621-mmc/dbg.c @@ -249,7 +249,9 @@ static ssize_t msdc_debug_proc_write(struct file *file, cmd_buf[count] = '\0'; pr_debug("msdc Write %s\n", cmd_buf); - sscanf(cmd_buf, "%x %x %x", &cmd, &p1, &p2); + ret = sscanf(cmd_buf, "%x %x %x", &cmd, &p1, &p2); + if (ret != 3) + return -EINVAL; if (cmd == SD_TOOL_ZONE) { id = p1; |