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usb: xhci-hcd: add a gratuitous doorbell read #6430

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usb: xhci-hcd: add a gratuitous doorbell read #6430

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236b3d1
usb: xhci-hcd: add a gratuitous doorbell read
P33M Oct 22, 2024
14717de
HACK: bluetooth: extend timeouts to 20 seconds
P33M Oct 30, 2024
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2 changes: 2 additions & 0 deletions drivers/usb/host/xhci-ring.c
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Original file line number Diff line number Diff line change
Expand Up @@ -505,6 +505,8 @@ void xhci_ring_ep_doorbell(struct xhci_hcd *xhci,

trace_xhci_ring_ep_doorbell(slot_id, DB_VALUE(ep_index, stream_id));

/* Incurs ~1.2us round-trip time (and wakes the link) */
readl(db_addr);
writel(DB_VALUE(ep_index, stream_id), db_addr);
/* flush the write */
readl(db_addr);
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4 changes: 2 additions & 2 deletions include/net/bluetooth/hci.h
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Expand Up @@ -425,8 +425,8 @@ enum {
/* HCI timeouts */
#define HCI_DISCONN_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
#define HCI_PAIRING_TIMEOUT msecs_to_jiffies(60000) /* 60 seconds */
#define HCI_INIT_TIMEOUT msecs_to_jiffies(10000) /* 10 seconds */
#define HCI_CMD_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
#define HCI_INIT_TIMEOUT msecs_to_jiffies(20000) /* 20 seconds */
#define HCI_CMD_TIMEOUT msecs_to_jiffies(20000) /* 20 seconds */
#define HCI_NCMD_TIMEOUT msecs_to_jiffies(4000) /* 4 seconds */
#define HCI_ACL_TX_TIMEOUT msecs_to_jiffies(45000) /* 45 seconds */
#define HCI_AUTO_OFF_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */
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