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>
Thu, 3 Nov 2022 14:57:49 +0000 (23:57 +0900)
commite440957f9c8bedae784f718c42207af222c25818
tree29e6678f8d2d42b71588d51269f9c91deb69e5b4
parentfb074d622ccc7e3999cde47f18ea7f8970b09d11
usb: dwc3: gadget: Don't set IMI for no_interrupt

commit 308c316d16cbad99bb834767382baa693ac42169 upstream.

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