From: Stefan Roese <sr@denx.de>
Date: Fri, 15 Jan 2021 07:52:56 +0000 (+0100)
Subject: usb: xhci: Fix compare to use physical addresses in xhci_bulk_tx()
X-Git-Url: http://git.dujemihanovic.xyz/html/%7B%7B%20.Permalink%20%7D%7D?a=commitdiff_plain;h=cec804251d4b4765bbcaa207f4c931fef350585e;p=u-boot.git

usb: xhci: Fix compare to use physical addresses in xhci_bulk_tx()

Testing with v2021.01 on MIPS Octeon has shown, that the latest patch
for the "short packet event trb handling" did introduce a bug on
platforms with virtual address != physical address. This patch fixes
this issue by using the correct address types in the compare (both
physical in this case).

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Aaron Williams <awilliams@marvell.com>
Cc: Chandrakala Chavva <cchavva@marvell.com>
Cc: Ran Wang <ran.wang_1@nxp.com>
Cc: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index d708fc928b..d6c47d579b 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -723,8 +723,8 @@ again:
 		return -ETIMEDOUT;
 	}
 
-	if ((uintptr_t)(le64_to_cpu(event->trans_event.buffer))
-			!= (uintptr_t)last_transfer_trb_addr) {
+	if ((uintptr_t)(le64_to_cpu(event->trans_event.buffer)) !=
+	    (uintptr_t)virt_to_phys(last_transfer_trb_addr)) {
 		available_length -=
 			(int)EVENT_TRB_LEN(le32_to_cpu(event->trans_event.transfer_len));
 		xhci_acknowledge_event(ctrl);