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authorSimon Arlott <simon@fire.lp0.eu>2010-09-01 18:37:12 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-09-03 17:33:41 -0700
commit902ffc3c707c1d459ea57428a619a807cbe412f9 (patch)
treed4566411d58755e4872b9426063b10749b2c470e /drivers/usb/atm
parent870408c8291015872a7a0b583673a9e56b3e73f4 (diff)
USB: cxacru: Use a bulk/int URB to access the command endpoint
The command endpoint is either a bulk or interrupt endpoint, but using the wrong type of transfer causes an error if CONFIG_USB_DEBUG is enabled after commit f661c6f8c67bd55e93348f160d590ff9edf08904, which checks for this mismatch. Detect which type of endpoint it is and use a bulk/int URB as appropriate. There are other function calls specifying a bulk pipe, but usb_clear_halt doesn't use the pipe type (only the endpoint) and usb_bulk_msg auto-detects interrupt transfers. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Cc: stable <stable@kernel.org> [.34 and newer] Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/atm')
-rw-r--r--drivers/usb/atm/cxacru.c24
1 files changed, 22 insertions, 2 deletions
diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
index 593fc5e2d2e..5af23cc5ea9 100644
--- a/drivers/usb/atm/cxacru.c
+++ b/drivers/usb/atm/cxacru.c
@@ -1127,6 +1127,7 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
{
struct cxacru_data *instance;
struct usb_device *usb_dev = interface_to_usbdev(intf);
+ struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD];
int ret;
/* instance init */
@@ -1171,15 +1172,34 @@ static int cxacru_bind(struct usbatm_data *usbatm_instance,
goto fail;
}
- usb_fill_int_urb(instance->rcv_urb,
+ if (!cmd_ep) {
+ dbg("cxacru_bind: no command endpoint");
+ ret = -ENODEV;
+ goto fail;
+ }
+
+ if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
+ == USB_ENDPOINT_XFER_INT) {
+ usb_fill_int_urb(instance->rcv_urb,
usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
instance->rcv_buf, PAGE_SIZE,
cxacru_blocking_completion, &instance->rcv_done, 1);
- usb_fill_int_urb(instance->snd_urb,
+ usb_fill_int_urb(instance->snd_urb,
usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
instance->snd_buf, PAGE_SIZE,
cxacru_blocking_completion, &instance->snd_done, 4);
+ } else {
+ usb_fill_bulk_urb(instance->rcv_urb,
+ usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD),
+ instance->rcv_buf, PAGE_SIZE,
+ cxacru_blocking_completion, &instance->rcv_done);
+
+ usb_fill_bulk_urb(instance->snd_urb,
+ usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
+ instance->snd_buf, PAGE_SIZE,
+ cxacru_blocking_completion, &instance->snd_done);
+ }
mutex_init(&instance->cm_serialize);