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usb: gadget: f_acm: add support for USB_CDC_REQ_SEND_BREAK

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Currently the usb side setting of the USB_CDC_REQ_SEND_BREAK control
is not supported. This patch adds the support.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Link: https://lore.kernel.org/r/20220406192914.3302636-1-m.grzeschik@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Michael Grzeschik 2022-04-06 21:29:14 +02:00 committed by Greg Kroah-Hartman
parent 6a7c7df993
commit 7e824f28c9
1 changed files with 10 additions and 0 deletions
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10
drivers/usb/gadget/function/f_acm.c
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@ -333,6 +333,8 @@ static void acm_complete_set_line_coding(struct usb_ep *ep,
}
}
static int acm_send_break(struct gserial *port, int duration);
static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
{
struct f_acm *acm = func_to_acm(f);
@ -391,6 +393,14 @@ static int acm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl)
acm->port_handshake_bits = w_value;
break;
case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8)
| USB_CDC_REQ_SEND_BREAK:
if (w_index != acm->ctrl_id)
goto invalid;
acm_send_break(&acm->port, w_value);
break;
default:
invalid:
dev_vdbg(&cdev->gadget->dev,