Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / drivers / platform / chrome / cros_ec_dev.c

diff --git a/kernel/drivers/platform/chrome/cros_ec_dev.c b/kernel/drivers/platform/chrome/cros_ec_dev.c
index d45cd25..2b331d5 100644 (file)
--- a/kernel/drivers/platform/chrome/cros_ec_dev.c
+++ b/kernel/drivers/platform/chrome/cros_ec_dev.c
@@ -147,13 +147,19 @@ static long ec_device_ioctl_xcmd(struct cros_ec_dev *ec, void __user *arg)
                goto exit;
        }
 
+       if (u_cmd.outsize != s_cmd->outsize ||
+           u_cmd.insize != s_cmd->insize) {
+               ret = -EINVAL;
+               goto exit;
+       }
+
        s_cmd->command += ec->cmd_offset;
        ret = cros_ec_cmd_xfer(ec->ec_dev, s_cmd);
        /* Only copy data to userland if data was received. */
        if (ret < 0)
                goto exit;
 
-       if (copy_to_user(arg, s_cmd, sizeof(*s_cmd) + u_cmd.insize))
+       if (copy_to_user(arg, s_cmd, sizeof(*s_cmd) + s_cmd->insize))
                ret = -EFAULT;
 exit:
        kfree(s_cmd);