In xhci_queue_command(), when the command is not 'reset endpoint',
'stop endpoint' or 'set TR dequeue pointer', endpoint ID should not
be encoded in the TRB.
Signed-off-by: Bin Meng <bmeng...@gmail.com>
---
drivers/usb/host/xhci-ring.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 2675a8f..579e670 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -280,8 +280,15 @@ void xhci_queue_command(struct xhci_ctrl *ctrl, u8 *ptr,
u32 slot_id,
fields[0] = lower_32_bits(val_64);
fields[1] = upper_32_bits(val_64);
fields[2] = 0;
- fields[3] = TRB_TYPE(cmd) | EP_ID_FOR_TRB(ep_index) |
- SLOT_ID_FOR_TRB(slot_id) | ctrl->cmd_ring->cycle_state;
+ fields[3] = TRB_TYPE(cmd) | SLOT_ID_FOR_TRB(slot_id) |
+ ctrl->cmd_ring->cycle_state;
+
+ /*
+ * Only 'reset endpoint', 'stop endpoint' and 'set TR dequeue pointer'
+ * commands need endpoint id encoded.
+ */
+ if (cmd >= TRB_RESET_EP && cmd <= TRB_SET_DEQ)
+ fields[3] |= EP_ID_FOR_TRB(ep_index);
queue_trb(ctrl, ctrl->cmd_ring, false, fields);
--
2.9.2
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