From: "Sean O. Stalley" <[email protected]> Change the default wMaxPacketSize value for EP0 of Full Speed devices from the maximum possible size (64) to the minimum (8). All full speed devices support a packet size of 8, but not all support a size of 64.
No packet longer than 8 bytes is ever read from EP0 before this value is changed from the default. Changing the default max packet size to 8 helps clarify that. Signed-off-by: Sean O. Stalley <[email protected]> --- drivers/usb/core/hub.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 21b99b4..b4b8704 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -4204,7 +4204,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, * the device descriptor to get bMaxPacketSize0 and * then correct our initial guess. */ - udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); + udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8); break; case USB_SPEED_LOW: /* fixed at 8 */ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8); -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
