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libpayload/xhci: Fix MPS handling in set_address 

We set MPS to speed_to_default_mps(speed) initially
but later compare maxpacketsize with 8 to change mps.
So compare with speed_to_default_mps(speed) to determine
if we need to change settings here.

BUG=b:147783572
BRANCH=none
TEST=works with 12Mbps/8MPS USB device

Signed-off-by: Kangheui Won <khwon@chromium.org>
Change-Id: I32455483fceec56f14af6118b77615c14b3f9f39
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38556
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Kangheui Won 2020-01-24 21:53:01 +11:00 committed by Patrick Georgi
parent b48148f4b3
commit a3d79292e7
1 changed files with 1 additions and 1 deletions
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2
payloads/libpayload/drivers/usb/xhci_devconf.c
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@ -227,7 +227,7 @@ xhci_set_address (hci_t *controller, usb_speed speed, int hubport, int hubaddr)
}
dev->endpoints[0].maxpacketsize = usb_decode_mps0(speed, buf[7]);
if (dev->endpoints[0].maxpacketsize != 8) {
if (dev->endpoints[0].maxpacketsize != speed_to_default_mps(speed)) {
memset((void *)ic->dev.ep0, 0x00, ctxsize);
*ic->add = (1 << 1); /* EP0 Context */
EC_SET(MPS, ic->dev.ep0, dev->endpoints[0].maxpacketsize);