[PATCH v4 4/4] usb: dwc3: add quirk USB_GADGET_QUIRK_EP_OUT_ALIGNED_SIZE to gadget driver

[David Cohen]

DWC3 requires epout to have buffer size aligned to MaxPacketSize value.
This patch adds necessary quirk for it.

Signed-off-by: David Cohen <david.a.cohen@xxxxxxxxxxxxxxx>
---
 drivers/usb/dwc3/gadget.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 5452c0fce360..b85ec110d6a0 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2600,6 +2600,12 @@ int dwc3_gadget_init(struct dwc3 *dwc)
 	dwc->gadget.name		= "dwc3-gadget";
 
 	/*
+	 * Per databook, DWC3 needs buffer size to be aligned to MaxPacketSize
+	 * on ep out.
+	 */
+	dwc->gadget.quirk_ep_out_aligned_size = true;
+
+	/*
 	 * REVISIT: Here we should clear all pending IRQs to be
 	 * sure we're starting from a well known location.
 	 */
-- 
1.8.4.rc3

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