DWC_usb31 controller has different GTXFIFOSIZE bit field for TXFDEF.
Check for DWC_usb31 IP revision to read the appropriate bit fields.

Signed-off-by: Thinh Nguyen <thi...@synopsys.com>
---
 drivers/usb/dwc3/gadget.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 639dd1b163a0..0bbc21ab6912 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2100,7 +2100,10 @@ static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, 
u8 total)
                        mdwidth /= 8;
 
                        size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(num));
-                       size = DWC3_GTXFIFOSIZ_TXFDEF(size);
+                       if (dwc3_is_usb31(dwc))
+                               size = DWC31_GTXFIFOSIZ_TXFDEF(size);
+                       else
+                               size = DWC3_GTXFIFOSIZ_TXFDEF(size);
 
                        /* FIFO Depth is in MDWDITH bytes. Multiply */
                        size *= mdwidth;
-- 
2.11.0

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