From 1898d93087d7404317dfdeaffa5d18fadbca52ef Mon Sep 17 00:00:00 2001
From: ronnie <ronnie@industiosoft.com>
Date: Sun, 23 Oct 2022 10:11:45 +0000
Subject: [PATCH] add ec20 drivers
---
longan/kernel/linux-4.9/drivers/usb/serial/usb_wwan.c | 12 +++++++++++-
1 files changed, 11 insertions(+), 1 deletions(-)
diff --git a/longan/kernel/linux-4.9/drivers/usb/serial/usb_wwan.c b/longan/kernel/linux-4.9/drivers/usb/serial/usb_wwan.c
index 3dfdfc8..abb2c70 100644
--- a/longan/kernel/linux-4.9/drivers/usb/serial/usb_wwan.c
+++ b/longan/kernel/linux-4.9/drivers/usb/serial/usb_wwan.c
@@ -504,7 +504,17 @@
usb_fill_bulk_urb(urb, serial->dev,
usb_sndbulkpipe(serial->dev, endpoint) | dir,
buf, len, callback, ctx);
-
+ if (dir == USB_DIR_OUT) {
+ struct usb_device_descriptor *desc = &serial->dev->descriptor;
+ if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9090))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9003))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ if (desc->idVendor == cpu_to_le16(0x05C6) && desc->idProduct == cpu_to_le16(0x9215))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ if (desc->idVendor == cpu_to_le16(0x2C7C))
+ urb->transfer_flags |= URB_ZERO_PACKET;
+ }
return urb;
}
--
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