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

Stefan Roese sr at denx.de
Fri Jan 15 08:52:56 CET 2021

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 at denx.de>
Cc: Aaron Williams <awilliams at marvell.com>
Cc: Chandrakala Chavva <cchavva at marvell.com>
Cc: Ran Wang <ran.wang_1 at nxp.com>
Cc: Nicolas Saenz Julienne <nsaenzjulienne at suse.de>
Cc: Marek Vasut <marex at denx.de>
Cc: Bin Meng <bmeng.cn at gmail.com>
 drivers/usb/host/xhci-ring.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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 -=

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