修改GPIO导出默认初始值

hc

2024-10-16 50a212ec906f7524620675f0c57357691c26c81f

 kernel/drivers/nfc/pn533/usb.c
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@@ -153,10 +153,17 @@
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 	return usb_submit_urb(phy->ack_urb, flags);
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 }
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+struct pn533_out_arg {
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+	struct pn533_usb_phy *phy;
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+	struct completion done;
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+};
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+
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 static int pn533_usb_send_frame(struct pn533 *dev,
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 				struct sk_buff *out)
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 {
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 	struct pn533_usb_phy *phy = dev->phy;
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+	struct pn533_out_arg arg;
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+	void *cntx;
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 	int rc;
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 	if (phy->priv == NULL)
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@@ -168,9 +175,17 @@
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 	print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
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 			     out->data, out->len, false);
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+	arg.phy = phy;
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+	init_completion(&arg.done);
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+	cntx = phy->out_urb->context;
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+	phy->out_urb->context = &arg;
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+
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 	rc = usb_submit_urb(phy->out_urb, GFP_KERNEL);
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 	if (rc)
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 		return rc;
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+
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+	wait_for_completion(&arg.done);
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+	phy->out_urb->context = cntx;
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 	if (dev->protocol_type == PN533_PROTO_REQ_RESP) {
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 		/* request for response for sent packet directly */
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@@ -412,7 +427,31 @@
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 	return arg.rc;
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 }
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-static void pn533_send_complete(struct urb *urb)
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+static void pn533_out_complete(struct urb *urb)
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+{
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+	struct pn533_out_arg *arg = urb->context;
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+	struct pn533_usb_phy *phy = arg->phy;
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+
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+	switch (urb->status) {
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+	case 0:
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+		break; /* success */
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+	case -ECONNRESET:
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+	case -ENOENT:
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+		dev_dbg(&phy->udev->dev,
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+			"The urb has been stopped (status %d)\n",
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+			urb->status);
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+		break;
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+	case -ESHUTDOWN:
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+	default:
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+		nfc_err(&phy->udev->dev,
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+			"Urb failure (status %d)\n",
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+			urb->status);
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+	}
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+
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+	complete(&arg->done);
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+}
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+
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+static void pn533_ack_complete(struct urb *urb)
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 {
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 	struct pn533_usb_phy *phy = urb->context;
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@@ -500,10 +539,10 @@
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 	usb_fill_bulk_urb(phy->out_urb, phy->udev,
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 			  usb_sndbulkpipe(phy->udev, out_endpoint),
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-			  NULL, 0, pn533_send_complete, phy);
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+			  NULL, 0, pn533_out_complete, phy);
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 	usb_fill_bulk_urb(phy->ack_urb, phy->udev,
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 			  usb_sndbulkpipe(phy->udev, out_endpoint),
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-			  NULL, 0, pn533_send_complete, phy);
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+			  NULL, 0, pn533_ack_complete, phy);
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 	switch (id->driver_info) {
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 	case PN533_DEVICE_STD: