[PATCH] Possible bug fix in the ehci-hcd

[Andy Shevchenko]

Hi!

The Sequans company who produce WiMAX chips provides the USB driver and kthp
addon driver. However the USB device doesn't work correctly.

Here is more true hack for Sequans SQN11x0 based modem.

P.S. For more details, please, ask Sequans staff (see Signed-off-by lines).

Signed-off-by: Andy Shevchenko <andy@xxxxxxxxxxxx>
Signed-off-by: Gosne Stephane <sgosne@xxxxxxxxxxx>

--- a/drivers/usb/host/ehci-q.c.orig	2008-02-07 16:53:18.000000000 +0200
+++ b/drivers/usb/host/ehci-q.c	2008-02-07 16:53:18.000000000 +0200
@@ -750,8 +750,14 @@
 			info1 |= 1 << 14;	/* toggle from qtd */
 			info2 |= (EHCI_TUNE_MULT_HS << 30);
 		} else if (type == PIPE_BULK) {
+			struct usb_device_descriptor *desc = &urb->dev->descriptor;
 			info1 |= (EHCI_TUNE_RL_HS << 28);
-			info1 |= 512 << 16;	/* usb2 fixed maxpacket */
+			/* Special hook for SQN11x0 */
+			if (desc->idVendor == 0x148e && desc->idProduct == 0x0900) {
+				info1 |= max_packet (maxp) << 16;
+			} else {
+				info1 |= 512 << 16;	/* usb2 fixed maxpacket */
+			}
 			info2 |= (EHCI_TUNE_MULT_HS << 30);
 		} else {		/* PIPE_INTERRUPT */
 			info1 |= max_packet (maxp) << 16;

-- 
With best regards,
Andy Shevchenko.      mailto: andy@xxxxxxxxxxxx


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