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-rw-r--r--payloads/libpayload/drivers/usb/xhci_commands.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/payloads/libpayload/drivers/usb/xhci_commands.c b/payloads/libpayload/drivers/usb/xhci_commands.c
index d633cc5762..a4078030c6 100644
--- a/payloads/libpayload/drivers/usb/xhci_commands.c
+++ b/payloads/libpayload/drivers/usb/xhci_commands.c
@@ -75,7 +75,13 @@ xhci_wait_for_command(xhci_t *const xhci,
/* Abort command on timeout */
xhci_debug("Aborting command (@%p), CRCR: 0x%"PRIx32"\n",
cmd_trb, xhci->opreg->crcr_lo);
- xhci->opreg->crcr_lo |= CRCR_CS | CRCR_CA;
+ /*
+ * Ref. xHCI Specification Revision 1.2, May 2019.
+ * Section 5.4.5, Table 5-24.
+ *
+ * Abort the command and stop the ring.
+ */
+ xhci->opreg->crcr_lo |= CRCR_CA;
xhci->opreg->crcr_hi = 0;
cc = xhci_wait_for_command_aborted(xhci, cmd_trb);