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[usb] Add the concept of a USB bus maximum transfer size

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2015-03-16 05:39:14 +00:00
parent 79697c75ee
commit 7b6765ff1b
4 changed files with 12 additions and 3 deletions
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4
src/drivers/bus/usb.c
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@@ -1736,11 +1736,12 @@ void free_usb_hub ( struct usb_hub *hub ) {
*
* @v dev Underlying hardware device
* @v ports Number of root hub ports
* @v mtu Largest transfer allowed on the bus
* @v op Host controller operations
* @ret bus USB bus, or NULL on allocation failure
*/
struct usb_bus * alloc_usb_bus ( struct device *dev, unsigned int ports,
struct usb_host_operations *op ) {
size_t mtu, struct usb_host_operations *op ) {
struct usb_bus *bus;
/* Allocate and initialise structure */
@@ -1749,6 +1750,7 @@ struct usb_bus * alloc_usb_bus ( struct device *dev, unsigned int ports,
goto err_alloc_bus;
bus->name = dev->name;
bus->dev = dev;
bus->mtu = mtu;
bus->op = op;
INIT_LIST_HEAD ( &bus->devices );
INIT_LIST_HEAD ( &bus->hubs );