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usb: gadget: dummy_hcd: fix SuperSpeed ep0 maxpacket

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For USB_SPEED_SUPER, dummy_hcd sets ep0 maxpacket to 9.
That is incorrect for SuperSpeed ep0 and breaks short packet handling
in control transfer tests.

Set ep0 maxpacket to 512 for SuperSpeed.

Fixes: 1cd8fd2887 ("usb: gadget: dummy_hcd: add SuperSpeed support")
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Igor Skalkin <igor.skalkin@oss.qualcomm.com>
Link: https://patch.msgid.link/20260812081910.6821-2-igor.skalkin@oss.qualcomm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Igor Skalkin 2026-08-12 10:19:09 +02:00 committed by Greg Kroah-Hartman
parent cb3b441f26
commit e68f245bcb
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/udc/dummy_hcd.c
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@ -918,7 +918,7 @@ static int dummy_set_selfpowered(struct usb_gadget *_gadget, int value)
static void dummy_udc_update_ep0(struct dummy *dum)
{
if (dum->gadget.speed == USB_SPEED_SUPER)
dum->ep[0].ep.maxpacket = 9;
dum->ep[0].ep.maxpacket = 512;
else
dum->ep[0].ep.maxpacket = 64;
}