redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

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 f661c6f8c6, 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>
hifive-unleashed-5.1
Simon Arlott 2010-09-01 18:37:12 +01:00 committed by Greg Kroah-Hartman
parent 870408c829
commit 902ffc3c70
1 changed files with 22 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/usb/atm/cxacru.c
View File

@ -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);