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[3/3] nfc: Fix RC-S380* needs zero-length packet

Message ID 87tw9kmij6.fsf_-_@mail.parknet.co.jp (mailing list archive)
State Accepted
Delegated to: Samuel Ortiz
Headers show

Commit Message

OGAWA Hirofumi Dec. 31, 2016, 11:42 a.m. UTC 
If sent packet size is wMaxPacketSize boundary, this device doesn't
answer. To fix this, we have to send zero-length packet in usb spec.

Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
---

 drivers/nfc/port100.c |    1 +
 1 file changed, 1 insertion(+)
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Patch

diff -puN drivers/nfc/port100.c~nfc-need-zero-packet drivers/nfc/port100.c
--- linux/drivers/nfc/port100.c~nfc-need-zero-packet	2016-12-31 19:11:03.893974993 +0900
+++ linux-hirofumi/drivers/nfc/port100.c	2016-12-31 19:11:03.895975004 +0900
@@ -1540,6 +1540,7 @@  static int port100_probe(struct usb_inte
 	usb_fill_bulk_urb(dev->out_urb, dev->udev,
 			  usb_sndbulkpipe(dev->udev, out_endpoint),
 			  NULL, 0, port100_send_complete, dev);
+	dev->out_urb->transfer_flags = URB_ZERO_PACKET;
 
 	dev->skb_headroom = PORT100_FRAME_HEADER_LEN +
 			    PORT100_COMM_RF_HEAD_MAX_LEN;