Merge "f_gsi: Make usb ipa wq as freezable workqueue" (d26bc0f8) · Commits · e / devices / android_kernel_sony_msm8998

drivers/usb/gadget/function/f_gsi.c

+7 −22

Original line number	Diff line number	Diff line
		@@ -1086,9 +1086,9 @@ static ssize_t gsi_ctrl_dev_write(struct file fp, const char __user buf,
		list_add_tail(&cpkt->list, &c_port->cpkt_resp_q);
		spin_unlock_irqrestore(&c_port->lock, flags);

		ret = gsi_ctrl_send_notification(gsi);

		if (!gsi_ctrl_send_notification(gsi))
		c_port->modem_to_host++;

		log_event_dbg("Exit %zu", count);

		return ret ? ret : count;
		@@ -1392,33 +1392,18 @@ static int queue_notification_request(struct f_gsi *gsi)
		{
		int ret;
		unsigned long flags;
		struct usb_cdc_notification *event;
		struct gsi_ctrl_pkt *cpkt;

		ret = usb_func_ep_queue(&gsi->function, gsi->c_port.notify,
		gsi->c_port.notify_req, GFP_ATOMIC);
		if (ret == -ENOTSUPP \|\| (ret < 0 && ret != -EAGAIN)) {
		if (ret < 0) {
		spin_lock_irqsave(&gsi->c_port.lock, flags);
		gsi->c_port.notify_req_queued = false;
		/* check if device disconnected while we dropped lock */
		if (atomic_read(&gsi->connected) &&
		!list_empty(&gsi->c_port.cpkt_resp_q)) {
		cpkt = list_first_entry(&gsi->c_port.cpkt_resp_q,
		struct gsi_ctrl_pkt, list);
		list_del(&cpkt->list);
		log_event_err("%s: drop ctrl pkt of len %d error %d",
		__func__, cpkt->len, ret);
		gsi_ctrl_pkt_free(cpkt);
		}
		gsi->c_port.cpkt_drop_cnt++;
		spin_unlock_irqrestore(&gsi->c_port.lock, flags);
		} else {
		ret = 0;
		event = gsi->c_port.notify_req->buf;
		log_event_dbg("%s: Queued Notify type %02x", __func__,
		event->bNotificationType);
		}

		log_event_dbg("%s: ret:%d req_queued:%d",
		__func__, ret, gsi->c_port.notify_req_queued);

		return ret;
		}

		@@ -3132,7 +3117,7 @@ MODULE_DESCRIPTION("GSI function driver");
		static int fgsi_init(void)
		{
		ipa_usb_wq = alloc_workqueue("k_ipa_usb",
		WQ_UNBOUND \| WQ_MEM_RECLAIM, 1);
		WQ_UNBOUND \| WQ_MEM_RECLAIM \| WQ_FREEZABLE, 1);
		if (!ipa_usb_wq) {
		log_event_err("Failed to create workqueue for IPA");
		return -ENOMEM;