On 7/8/23 4:30 AM, Frank Li wrote:
> Previously, the cdns3_gadget_check_config() function in the cdns3 driver
> mistakenly calculated the ep_buf_size by considering only one
> configuration's endpoint information because "claimed" will be clear after
> call usb_gadget_check_config().
>
> The fix involves checking the private flags EP_CLAIMED instead of relying
> on the "claimed" flag.
>
> Fixes: dce49449e04f ("usb: cdns3: allocate TX FIFO size according to composite EP number")
> Reported-by: Ravi Gunasekaran <r-gunasekaran@xxxxxx>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
> drivers/usb/cdns3/cdns3-gadget.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c
> index ccfaebca6faa..3326955f6991 100644
> --- a/drivers/usb/cdns3/cdns3-gadget.c
> +++ b/drivers/usb/cdns3/cdns3-gadget.c
> @@ -2999,12 +2999,14 @@ static int cdns3_gadget_udc_stop(struct usb_gadget *gadget)
> static int cdns3_gadget_check_config(struct usb_gadget *gadget)
> {
> struct cdns3_device *priv_dev = gadget_to_cdns3_device(gadget);
> + struct cdns3_endpoint *priv_ep;
> struct usb_ep *ep;
> int n_in = 0;
> int total;
>
> list_for_each_entry(ep, &gadget->ep_list, ep_list) {
> - if (ep->claimed && (ep->address & USB_DIR_IN))
> + priv_ep = ep_to_cdns3_ep(ep);
> + if ((priv_ep->flags & EP_CLAIMED) && (ep->address & USB_DIR_IN))
> n_in++;
> }
>
Tested-by: Ravi Gunasekaran <r-gunasekaran@xxxxxx>
--
Regards,
Ravi
