diff options
| -rw-r--r-- | drivers/usb/core/hcd.c | 11 | ||||
| -rw-r--r-- | include/linux/usb.h | 2 |
2 files changed, 8 insertions, 5 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 3a2e82a9c115..ab54999da2bf 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2075,8 +2075,11 @@ EXPORT_SYMBOL_GPL(usb_alloc_streams); * * Reverts a group of bulk endpoints back to not using stream IDs. * Can fail if we are given bad arguments, or HCD is broken. + * + * Return: On success, the number of allocated streams. On failure, a negative + * error code. */ -void usb_free_streams(struct usb_interface *interface, +int usb_free_streams(struct usb_interface *interface, struct usb_host_endpoint **eps, unsigned int num_eps, gfp_t mem_flags) { @@ -2087,14 +2090,14 @@ void usb_free_streams(struct usb_interface *interface, dev = interface_to_usbdev(interface); hcd = bus_to_hcd(dev->bus); if (dev->speed != USB_SPEED_SUPER) - return; + return -EINVAL; /* Streams only apply to bulk endpoints. */ for (i = 0; i < num_eps; i++) if (!eps[i] || !usb_endpoint_xfer_bulk(&eps[i]->desc)) - return; + return -EINVAL; - hcd->driver->free_streams(hcd, dev, eps, num_eps, mem_flags); + return hcd->driver->free_streams(hcd, dev, eps, num_eps, mem_flags); } EXPORT_SYMBOL_GPL(usb_free_streams); diff --git a/include/linux/usb.h b/include/linux/usb.h index 001629cd1a97..f726c39097e0 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -702,7 +702,7 @@ extern int usb_alloc_streams(struct usb_interface *interface, unsigned int num_streams, gfp_t mem_flags); /* Reverts a group of bulk endpoints back to not using stream IDs. */ -extern void usb_free_streams(struct usb_interface *interface, +extern int usb_free_streams(struct usb_interface *interface, struct usb_host_endpoint **eps, unsigned int num_eps, gfp_t mem_flags); |
