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path: root/drivers/usb/host/xhci-hub.c
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Diffstat (limited to 'drivers/usb/host/xhci-hub.c')
-rw-r--r--drivers/usb/host/xhci-hub.c69
1 files changed, 11 insertions, 58 deletions
diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c
index 0980ade2a2..61f083de6e 100644
--- a/drivers/usb/host/xhci-hub.c
+++ b/drivers/usb/host/xhci-hub.c
@@ -448,38 +448,6 @@ u32 xhci_port_state_to_neutral(u32 state)
}
EXPORT_SYMBOL_GPL(xhci_port_state_to_neutral);
-/**
- * xhci_find_slot_id_by_port() - Find slot id of a usb device on a roothub port
- * @hcd: pointer to hcd of the roothub
- * @xhci: pointer to xhci structure
- * @port: one-based port number of the port in this roothub.
- *
- * Return: Slot id of the usb device connected to the root port, 0 if not found
- */
-
-int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
- u16 port)
-{
- int slot_id;
- int i;
- enum usb_device_speed speed;
-
- slot_id = 0;
- for (i = 0; i < MAX_HC_SLOTS; i++) {
- if (!xhci->devs[i] || !xhci->devs[i]->udev)
- continue;
- speed = xhci->devs[i]->udev->speed;
- if (((speed >= USB_SPEED_SUPER) == (hcd->speed >= HCD_USB3))
- && xhci->devs[i]->fake_port == port) {
- slot_id = i;
- break;
- }
- }
-
- return slot_id;
-}
-EXPORT_SYMBOL_GPL(xhci_find_slot_id_by_port);
-
/*
* Stop device
* It issues stop endpoint command for EP 0 to 30. And wait the last command
@@ -930,7 +898,6 @@ static int xhci_handle_usb2_port_link_resume(struct xhci_port *port,
struct xhci_bus_state *bus_state;
struct xhci_hcd *xhci;
struct usb_hcd *hcd;
- int slot_id;
u32 wIndex;
hcd = port->rhub->hcd;
@@ -986,13 +953,11 @@ static int xhci_handle_usb2_port_link_resume(struct xhci_port *port,
spin_lock_irqsave(&xhci->lock, *flags);
if (time_left) {
- slot_id = xhci_find_slot_id_by_port(hcd, xhci,
- wIndex + 1);
- if (!slot_id) {
+ if (!port->slot_id) {
xhci_dbg(xhci, "slot_id is zero\n");
return -ENODEV;
}
- xhci_ring_device(xhci, slot_id);
+ xhci_ring_device(xhci, port->slot_id);
} else {
int port_status = readl(port->addr);
@@ -1202,7 +1167,6 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
unsigned long flags;
u32 temp, status;
int retval = 0;
- int slot_id;
struct xhci_bus_state *bus_state;
u16 link_state = 0;
u16 wake_mask = 0;
@@ -1332,15 +1296,13 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
goto error;
}
- slot_id = xhci_find_slot_id_by_port(hcd, xhci,
- portnum1);
- if (!slot_id) {
+ if (!port->slot_id) {
xhci_warn(xhci, "slot_id is zero\n");
goto error;
}
/* unlock to execute stop endpoint commands */
spin_unlock_irqrestore(&xhci->lock, flags);
- xhci_stop_device(xhci, slot_id, 1);
+ xhci_stop_device(xhci, port->slot_id, 1);
spin_lock_irqsave(&xhci->lock, flags);
xhci_set_link_state(xhci, port, XDEV_U3);
@@ -1463,14 +1425,12 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
if (link_state == USB_SS_PORT_LS_U3) {
int retries = 16;
- slot_id = xhci_find_slot_id_by_port(hcd, xhci,
- portnum1);
- if (slot_id) {
+ if (port->slot_id) {
/* unlock to execute stop endpoint
* commands */
spin_unlock_irqrestore(&xhci->lock,
flags);
- xhci_stop_device(xhci, slot_id, 1);
+ xhci_stop_device(xhci, port->slot_id, 1);
spin_lock_irqsave(&xhci->lock, flags);
}
xhci_set_link_state(xhci, port, USB_SS_PORT_LS_U3);
@@ -1584,13 +1544,11 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
}
bus_state->port_c_suspend |= 1 << wIndex;
- slot_id = xhci_find_slot_id_by_port(hcd, xhci,
- portnum1);
- if (!slot_id) {
+ if (!port->slot_id) {
xhci_dbg(xhci, "slot_id is zero\n");
goto error;
}
- xhci_ring_device(xhci, slot_id);
+ xhci_ring_device(xhci, port->slot_id);
break;
case USB_PORT_FEAT_C_SUSPEND:
bus_state->port_c_suspend &= ~(1 << wIndex);
@@ -1821,10 +1779,7 @@ retry:
if (!portsc_buf[port_index])
continue;
if (test_bit(port_index, &bus_state->bus_suspended)) {
- int slot_id;
-
- slot_id = xhci_find_slot_id_by_port(hcd, xhci,
- port_index + 1);
+ int slot_id = ports[port_index]->slot_id;
if (slot_id) {
spin_unlock_irqrestore(&xhci->lock, flags);
xhci_stop_device(xhci, slot_id, 1);
@@ -1877,7 +1832,6 @@ int xhci_bus_resume(struct usb_hcd *hcd)
struct xhci_bus_state *bus_state;
unsigned long flags;
int max_ports, port_index;
- int slot_id;
int sret;
u32 next_state;
u32 temp, portsc;
@@ -1970,9 +1924,8 @@ int xhci_bus_resume(struct usb_hcd *hcd)
continue;
}
xhci_test_and_clear_bit(xhci, ports[port_index], PORT_PLC);
- slot_id = xhci_find_slot_id_by_port(hcd, xhci, port_index + 1);
- if (slot_id)
- xhci_ring_device(xhci, slot_id);
+ if (ports[port_index]->slot_id)
+ xhci_ring_device(xhci, ports[port_index]->slot_id);
}
(void) readl(&xhci->op_regs->command);