For the capture endpoint, set the UAC_EP_CS_ATTR_FILL_MAX bit in
bmAttributes to that the host only send IN tokens with wMaxPacketSize
bytes. If that bit isn't set, snd-usb will calculate a smaller packet
size, which is answered by a fixed-size (512 bytes) response from the
gadget driver. That consequently leads to -EOVERFLOW errors on the
host side.
Reported-by: Sebastian Reimers <sebastian.reim...@googlemail.com>
Signed-off-by: Daniel Mack <zon...@gmail.com>
---
drivers/usb/gadget/function/f_uac2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/function/f_uac2.c
b/drivers/usb/gadget/function/f_uac2.c
index efe8add..1d6d085 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -813,7 +813,7 @@ static struct uac2_iso_endpoint_descriptor as_iso_in_desc =
{
.bDescriptorType = USB_DT_CS_ENDPOINT,
.bDescriptorSubtype = UAC_EP_GENERAL,
- .bmAttributes = 0,
+ .bmAttributes = UAC_EP_CS_ATTR_FILL_MAX,
.bmControls = 0,
.bLockDelayUnits = 0,
.wLockDelay = 0,
--
2.1.0
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