1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c
index 055b84adedac..7667b12f2ff5 100644
--- a/drivers/usb/misc/usbtest.c
+++ b/drivers/usb/misc/usbtest.c
@@ -423,6 +423,9 @@ alloc_sglist(int nents, int max, int vary)
         unsigned                i;
         unsigned                size = max;
 
+        if (max == 0)
+                return NULL;
+
         sg = kmalloc_array(nents, sizeof *sg, GFP_KERNEL);
         if (!sg)
                 return NULL;
@@ -2386,6 +2389,7 @@ static struct usbtest_info gz_info = {
         .name           = "Linux gadget zero",
         .autoconf       = 1,
         .ctrl_out       = 1,
+        .iso            = 1,
         .alt            = 0,
 };