From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G

---
 kernel/drivers/usb/serial/usb_wwan.c |   31 ++++++++++++++++++-------------
 1 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/kernel/drivers/usb/serial/usb_wwan.c b/kernel/drivers/usb/serial/usb_wwan.c
index 628a75d..c845b1c 100644
--- a/kernel/drivers/usb/serial/usb_wwan.c
+++ b/kernel/drivers/usb/serial/usb_wwan.c
@@ -140,10 +140,10 @@
 	ss->line            = port->minor;
 	ss->port            = port->port_number;
 	ss->baud_base       = tty_get_baud_rate(port->port.tty);
-	ss->close_delay	    = jiffies_to_msecs(port->port.close_delay) / 10;
+	ss->close_delay	    = port->port.close_delay / 10;
 	ss->closing_wait    = port->port.closing_wait == ASYNC_CLOSING_WAIT_NONE ?
 				 ASYNC_CLOSING_WAIT_NONE :
-				 jiffies_to_msecs(port->port.closing_wait) / 10;
+				 port->port.closing_wait / 10;
 	return 0;
 }
 EXPORT_SYMBOL(usb_wwan_get_serial_info);
@@ -155,10 +155,9 @@
 	unsigned int closing_wait, close_delay;
 	int retval = 0;
 
-	close_delay = msecs_to_jiffies(ss->close_delay * 10);
+	close_delay = ss->close_delay * 10;
 	closing_wait = ss->closing_wait == ASYNC_CLOSING_WAIT_NONE ?
-			ASYNC_CLOSING_WAIT_NONE :
-			msecs_to_jiffies(ss->closing_wait * 10);
+			ASYNC_CLOSING_WAIT_NONE : ss->closing_wait * 10;
 
 	mutex_lock(&port->port.mutex);
 
@@ -271,9 +270,7 @@
 	if (status) {
 		dev_dbg(dev, "%s: nonzero status: %d on endpoint %02x.\n",
 			__func__, status, endpoint);
-
-		/* don't resubmit on fatal errors */
-		if (status == -ESHUTDOWN || status == -ENOENT)
+		if (status == -ESHUTDOWN || status == -ENOENT || status == -EPROTO)
 			return;
 	} else {
 		if (urb->actual_length) {
@@ -435,8 +432,7 @@
 
 	/*
 	 * Need to take susp_lock to make sure port is not already being
-	 * resumed, but no need to hold it due to the tty-port initialized
-	 * flag.
+	 * resumed, but no need to hold it due to initialized
 	 */
 	spin_lock_irq(&intfdata->susp_lock);
 	if (--intfdata->open_ports == 0)
@@ -467,7 +463,6 @@
 				      void (*callback) (struct urb *))
 {
 	struct usb_serial *serial = port->serial;
-	struct usb_wwan_intf_private *intfdata = usb_get_serial_data(serial);
 	struct urb *urb;
 
 	urb = usb_alloc_urb(0, GFP_KERNEL);	/* No ISO */
@@ -478,8 +473,18 @@
 			  usb_sndbulkpipe(serial->dev, endpoint) | dir,
 			  buf, len, callback, ctx);
 
-	if (intfdata->use_zlp && dir == USB_DIR_OUT)
-		urb->transfer_flags |= URB_ZERO_PACKET;
+#if 1 //Added by Quectel for Zero Packet
+	if (dir == USB_DIR_OUT) {
+		if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) && serial->dev->descriptor.idProduct == cpu_to_le16(0x9090))
+			urb->transfer_flags |= URB_ZERO_PACKET;
+		if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) && serial->dev->descriptor.idProduct == cpu_to_le16(0x9003))
+			urb->transfer_flags |= URB_ZERO_PACKET;
+		if (serial->dev->descriptor.idVendor == cpu_to_le16(0x05C6) && serial->dev->descriptor.idProduct == cpu_to_le16(0x9215))
+			urb->transfer_flags |= URB_ZERO_PACKET;
+		if (serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C))
+			urb->transfer_flags |= URB_ZERO_PACKET;
+	}
+#endif
 
 	return urb;
 }

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