Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c8458d59 authored by Christophe Lebouc's avatar Christophe Lebouc Committed by Greg Kroah-Hartman
Browse files

usb: langwell_udc: fix big file transfer issue. 



This patch fixing the problem with large file transfers failing. Swap the read
order to avoid unexpected RX status.

Signed-off-by: default avatarChristophe Lebouc <christophex.lebouc@intel.com>
Signed-off-by: default avatarHao Wu <hao.wu@intel.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 689d6eac

drivers/usb/gadget/langwell_udc.c

+4 −2
Original line number Diff line number Diff line
@@ -2440,12 +2440,14 @@ static int process_ep_req(struct langwell_udc *dev, int index, 
	dev_vdbg(&dev->pdev->dev, "---> %s()\n", __func__);



	for (i = 0; i < curr_req->dtd_count; i++) {

		remaining_length = le16_to_cpu(curr_dtd->dtd_total);

		actual -= remaining_length;



		/* command execution states by dTD */

		dtd_status = curr_dtd->dtd_status;



		barrier();

		remaining_length = le16_to_cpu(curr_dtd->dtd_total);

		actual -= remaining_length;



		if (!dtd_status) {

			/* transfers completed successfully */

			if (!remaining_length) {