diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/xhci-ring.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 2cbdc4537e73..d9714cea6dfa 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -429,9 +429,8 @@ void xhci_ring_ep_doorbell(struct xhci_hcd *xhci, trace_xhci_ring_ep_doorbell(slot_id, DB_VALUE(ep_index, stream_id)); writel(DB_VALUE(ep_index, stream_id), db_addr); - /* The CPU has better things to do at this point than wait for a - * write-posting flush. It'll get there soon enough. - */ + /* flush the write */ + readl(db_addr); } /* Ring the doorbell for any rings with pending URBs */ |