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Commit d86edc41 authored by Tarun Gupta's avatar Tarun Gupta Committed by Gerrit - the friendly Code Review server
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USB: f_mbim: Increase the IN endpoint buffer allocation 



Some UDC may require allocation of some extra bytes for
TX buffer due to hardware requirement. Add necessary
changes for the same.

Change-Id: I0cd741727c79ecf128e709d9a557004a26ef44f5
Signed-off-by: default avatarTarun Gupta <tarung@codeaurora.org>
parent 45f1dede

drivers/usb/gadget/function/f_mbim.c

+5 −3
Original line number Diff line number Diff line
@@ -567,13 +567,14 @@ static void mbim_free_ctrl_pkt(struct ctrl_pkt *pkt) 
	}

}



static struct usb_request *mbim_alloc_req(struct usb_ep *ep, int buffer_size)

static struct usb_request *mbim_alloc_req(struct usb_ep *ep, int buffer_size,

		size_t extra_buf)

{

	struct usb_request *req = usb_ep_alloc_request(ep, GFP_KERNEL);

	if (!req)

		return NULL;



	req->buf = kmalloc(buffer_size, GFP_KERNEL);

	req->buf = kmalloc(buffer_size + extra_buf, GFP_KERNEL);

	if (!req->buf) {

		usb_ep_free_request(ep, req);

		return NULL;
@@ -1510,7 +1511,8 @@ mbim_bind(struct usb_configuration *c, struct usb_function *f) 
	status = -ENOMEM;



	/* allocate notification request and buffer */

	mbim->not_port.notify_req = mbim_alloc_req(ep, NCM_STATUS_BYTECOUNT);

	mbim->not_port.notify_req = mbim_alloc_req(ep, NCM_STATUS_BYTECOUNT,

				cdev->gadget->extra_buf_alloc);

	if (!mbim->not_port.notify_req) {

		pr_info("failed to allocate notify request\n");

		goto fail;