Merge tag 'usb-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

[linux.git] / drivers / usb / core / buffer.c

diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index 2741566ee4f25849e64d8c61ce9064a534b56647..98e39f91723a52ec7cf607dc60f50035e66a569f 100644 (file)
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -122,6 +122,9 @@ void *hcd_buffer_alloc(
        struct usb_hcd          *hcd = bus_to_hcd(bus);
        int                     i;
 
+       if (size == 0)
+               return NULL;
+
        /* some USB hosts just use PIO */
        if (!IS_ENABLED(CONFIG_HAS_DMA) ||
            (!bus->controller->dma_mask &&