1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index e9f5043a2167..e6a6d67c8705 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -241,7 +241,8 @@ static int usbdev_mmap(struct file *file, struct vm_area_struct *vma)
                 goto error_decrease_mem;
         }
 
-        mem = usb_alloc_coherent(ps->dev, size, GFP_USER, &dma_handle);
+        mem = usb_alloc_coherent(ps->dev, size, GFP_USER | __GFP_NOWARN,
+                        &dma_handle);
         if (!mem) {
                 ret = -ENOMEM;
                 goto error_free_usbm;
@@ -2582,7 +2583,9 @@ static unsigned int usbdev_poll(struct file *file,
         if (file->f_mode & FMODE_WRITE && !list_empty(&ps->async_completed))
                 mask |= POLLOUT | POLLWRNORM;
         if (!connected(ps))
-                mask |= POLLERR | POLLHUP;
+                mask |= POLLHUP;
+        if (list_empty(&ps->list))
+                mask |= POLLERR;
         return mask;
 }