提交 10d0f27c 编写于 作者: J Jean-Christophe Dubois 提交者: Jeff Garzik

rndis_host: fix transfer size negotiation

This patch should resolve a problem that's troubled support for
some RNDIS peripherals.  It seems to have boiled down to using a
variable to establish transfer size limits before it was assigned,
which caused those devices to fallback to a default "jumbogram"
mode we don't support.  Fix by assigning it earlier for RNDIS.
Signed-off-by: NJean-Christophe Dubois <jcd@tribudubois.net>
[ cleanups ]
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJeff Garzik <jeff@garzik.org>
上级 4373c932
...@@ -16,10 +16,6 @@ ...@@ -16,10 +16,6 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/ */
// #define DEBUG // error path messages, extra info
// #define VERBOSE // more; success messages
#include <linux/module.h> #include <linux/module.h>
#include <linux/init.h> #include <linux/init.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
...@@ -318,6 +314,14 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags) ...@@ -318,6 +314,14 @@ generic_rndis_bind(struct usbnet *dev, struct usb_interface *intf, int flags)
net->hard_header_len += sizeof (struct rndis_data_hdr); net->hard_header_len += sizeof (struct rndis_data_hdr);
dev->hard_mtu = net->mtu + net->hard_header_len; dev->hard_mtu = net->mtu + net->hard_header_len;
dev->maxpacket = usb_maxpacket(dev->udev, dev->out, 1);
if (dev->maxpacket == 0) {
if (netif_msg_probe(dev))
dev_dbg(&intf->dev, "dev->maxpacket can't be 0\n");
retval = -EINVAL;
goto fail_and_release;
}
dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1); dev->rx_urb_size = dev->hard_mtu + (dev->maxpacket + 1);
dev->rx_urb_size &= ~(dev->maxpacket - 1); dev->rx_urb_size &= ~(dev->maxpacket - 1);
u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size); u.init->max_transfer_size = cpu_to_le32(dev->rx_urb_size);
......
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