The scatter buffer list support earlier than DEV_VER_V2 is not
good enough, software can't know well about short transfer for it.
Cc: Pawel Laszczak <pawell@xxxxxxxxxxx>
Signed-off-by: Peter Chen <peter.chen@xxxxxxx>
---
drivers/usb/cdns3/gadget.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/cdns3/gadget.c b/drivers/usb/cdns3/gadget.c
index e2c12212dba4..90a66bdc30ba 100644
--- a/drivers/usb/cdns3/gadget.c
+++ b/drivers/usb/cdns3/gadget.c
@@ -3160,7 +3160,6 @@ static int cdns3_gadget_start(struct cdns3 *cdns)
priv_dev->gadget.speed = USB_SPEED_UNKNOWN;
priv_dev->gadget.ops = &cdns3_gadget_ops;
priv_dev->gadget.name = "usb-ss-gadget";
- priv_dev->gadget.sg_supported = 1;
priv_dev->gadget.quirk_avoids_skb_reserve = 1;
priv_dev->gadget.irq = cdns->dev_irq;
@@ -3199,6 +3198,8 @@ static int cdns3_gadget_start(struct cdns3 *cdns)
readl(&priv_dev->regs->usb_cap2));
priv_dev->dev_ver = GET_DEV_BASE_VERSION(priv_dev->dev_ver);
+ if (priv_dev->dev_ver >= DEV_VER_V2)
+ priv_dev->gadget.sg_supported = 1;
priv_dev->zlp_buf = kzalloc(CDNS3_EP_ZLP_BUF_SIZE, GFP_KERNEL);
if (!priv_dev->zlp_buf) {
--
2.17.1
