On Thu, Nov 30, 2023 at 12:39:45PM +0100, Oliver Neukum wrote:
> Looking for a bulk endpoint to transfer data over
> we need something that can transmit data.
>
> Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
> ---
> drivers/usb/core/usb.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
> index 2a938cf47ccd..d163bd279021 100644
> --- a/drivers/usb/core/usb.c
> +++ b/drivers/usb/core/usb.c
> @@ -80,6 +80,9 @@ static bool match_endpoint(struct usb_endpoint_descriptor *epd,
> {
> switch (usb_endpoint_type(epd)) {
> case USB_ENDPOINT_XFER_BULK:
> + if (!usb_endpoint_maxp(epd))
> + return false;
Why would a bulk endpoint descriptor's maxpacket size ever be 0? Are
there any devices that have such a thing?
If we do encounter one, it will trigger a dev_notice() in config.c's
usb_parse_endpoint().
Alan Stern
