Staging: most: fix passing a potential null pointer

This patch fixes passing of a potential null pointer.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/most/aim-cdev/cdev.c b/drivers/staging/most/aim-cdev/cdev.c
index cfc32dff651277fe01e9a615e8ade33de8718614..252a17cf153cf1e3b3e3d9010d93d8a73ed5923d 100644 (file)
--- a/drivers/staging/most/aim-cdev/cdev.c
+++ b/drivers/staging/most/aim-cdev/cdev.c
@@ -204,7 +204,8 @@ static ssize_t aim_write(struct file *filp, const char __user *buf,
        }
        return actual_len - retval;
 error:
-       most_put_mbo(mbo);
+       if (mbo)
+               most_put_mbo(mbo);
        return err;
 }