usb: dwc3: gadget: Don't set IMI for no_interrupt
authorThinh Nguyen <Thinh.Nguyen@synopsys.com>
Tue, 25 Oct 2022 22:10:20 +0000 (15:10 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 26 Oct 2022 16:31:56 +0000 (18:31 +0200)
commit308c316d16cbad99bb834767382baa693ac42169
tree297cbd0ba3728e97885553cf82afa6dc682a3f53
parentf78961f8380b940e0cfc7e549336c21a2ad44f4d
usb: dwc3: gadget: Don't set IMI for no_interrupt

The gadget driver may have a certain expectation of how the request
completion flow should be from to its configuration. Make sure the
controller driver respect that. That is, don't set IMI (Interrupt on
Missed Isoc) when usb_request->no_interrupt is set. Also, the driver
should only set IMI to the last TRB of a chain.

Fixes: 72246da40f37 ("usb: Introduce DesignWare USB3 DRD Driver")
Cc: stable@vger.kernel.org
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Jeff Vanhoof <jdv1029@gmail.com>
Tested-by: Jeff Vanhoof <jdv1029@gmail.com>
Link: https://lore.kernel.org/r/ced336c84434571340c07994e3667a0ee284fefe.1666735451.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/dwc3/gadget.c