From: Horst Schirmeier check_ctrlrecip() disallows any control transfers if the device is deconfigured (in configuration 0, ie. state ADDRESS). This for example makes it impossible to read the device descriptors without configuring the device, although most standard device requests are allowed in this state by the spec. This patch allows control transfers for the ADDRESS state, too. Signed-off-by: Horst Schirmeier Cc: Greg KH Cc: Alan Stern Cc: David Brownell Signed-off-by: Andrew Morton --- drivers/usb/core/devio.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletion(-) diff -puN drivers/usb/core/devio.c~usbcore-fix-check_ctrlrecip-to-allow-control-transfers-in-state-address drivers/usb/core/devio.c --- devel/drivers/usb/core/devio.c~usbcore-fix-check_ctrlrecip-to-allow-control-transfers-in-state-address 2006-03-11 00:16:29.000000000 -0800 +++ devel-akpm/drivers/usb/core/devio.c 2006-03-11 00:16:29.000000000 -0800 @@ -493,7 +493,8 @@ static int check_ctrlrecip(struct dev_st { int ret = 0; - if (ps->dev->state != USB_STATE_CONFIGURED) + if (ps->dev->state != USB_STATE_ADDRESS + && ps->dev->state != USB_STATE_CONFIGURED) return -EHOSTUNREACH; if (USB_TYPE_VENDOR == (USB_TYPE_MASK & requesttype)) return 0; _