diff options
| author | Inaky Perez-Gonzalez <inaky@linux.intel.com> | 2008-04-09 10:21:50 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-04-09 10:21:50 +1000 |
| commit | 0c37a6a8844c1db99d77cd58d81f4cb8cb604622 (patch) | |
| tree | f8c24dc01d69f9282edab4438cc1f7a4a7a9a5fa | |
| parent | a67b1afd277760085b747a789c7b61fe582d986e (diff) | |
wusb-devices-dont-use-a-set-address
wusb: devices dont use a set address
A WUSB device gets his address during the connection phase; later on,
during the authenthication phase (driven from user space) we assign
the final address. So we need to skip in hub_port_init() the actual
setting of the address for WUSB devices.
Signed-off-by: Inaky Perez-Gonzalez <inaky@linux.intel.com>
| -rw-r--r-- | drivers/usb/core/hub.c | 47 |
1 files changed, 27 insertions, 20 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 58f0f0e01b1d..2aef3bd6007c 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2422,26 +2422,33 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, #undef GET_DESCRIPTOR_BUFSIZE } - for (j = 0; j < SET_ADDRESS_TRIES; ++j) { - retval = hub_set_address(udev, devnum); - if (retval >= 0) + /* + * If device is WUSB, we already assigned an + * unauthorized address in the Connect Ack sequence; + * authorization will assign the final address. + */ + if (udev->wusb == 0) { + for (j = 0; j < SET_ADDRESS_TRIES; ++j) { + retval = hub_set_address(udev, devnum); + if (retval >= 0) + break; + msleep(200); + } + if (retval < 0) { + dev_err(&udev->dev, + "device not accepting address %d, error %d\n", + devnum, retval); + goto fail; + } + + /* cope with hardware quirkiness: + * - let SET_ADDRESS settle, some device hardware wants it + * - read ep0 maxpacket even for high and low speed, + */ + msleep(10); + if (USE_NEW_SCHEME(retry_counter)) break; - msleep(200); - } - if (retval < 0) { - dev_err(&udev->dev, - "device not accepting address %d, error %d\n", - devnum, retval); - goto fail; - } - - /* cope with hardware quirkiness: - * - let SET_ADDRESS settle, some device hardware wants it - * - read ep0 maxpacket even for high and low speed, - */ - msleep(10); - if (USE_NEW_SCHEME(retry_counter)) - break; + } retval = usb_get_device_descriptor(udev, 8); if (retval < 8) { @@ -2458,7 +2465,7 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, if (retval) goto fail; - i = udev->descriptor.bMaxPacketSize0 == 0xff? + i = udev->descriptor.bMaxPacketSize0 == 0xff? /* wusb device? */ 512 : udev->descriptor.bMaxPacketSize0; if (le16_to_cpu(udev->ep0.desc.wMaxPacketSize) != i) { if (udev->speed != USB_SPEED_FULL || |