USB: straighten out port feature vs. port status usage
This patch (as1349b) clears up the confusion in many USB host
controller drivers between port features and port statuses. In mosty
cases it's true that the status bit is in the position given by the
corresponding feature value, but that's not always true and it's not
guaranteed in the USB spec.
There's no functional change, just replacing expressions of the form
(1 << USB_PORT_FEAT_x) with USB_PORT_STAT_x, which has the same value.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index c7178bc..c440181 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -659,7 +659,7 @@
* Even if OWNER is set, so the port is owned by the
* companion controller, khubd needs to be able to clear
* the port-change status bits (especially
- * USB_PORT_FEAT_C_CONNECTION).
+ * USB_PORT_STAT_C_CONNECTION).
*/
switch (wValue) {
@@ -729,12 +729,12 @@
// wPortChange bits
if (temp & PORT_CSC)
- status |= 1 << USB_PORT_FEAT_C_CONNECTION;
+ status |= USB_PORT_STAT_C_CONNECTION << 16;
if (temp & PORT_PEC)
- status |= 1 << USB_PORT_FEAT_C_ENABLE;
+ status |= USB_PORT_STAT_C_ENABLE << 16;
if ((temp & PORT_OCC) && !ignore_oc){
- status |= 1 << USB_PORT_FEAT_C_OVER_CURRENT;
+ status |= USB_PORT_STAT_C_OVERCURRENT << 16;
/*
* Hubs should disable port power on over-current.
@@ -791,7 +791,7 @@
if ((temp & PORT_RESET)
&& time_after_eq(jiffies,
ehci->reset_done[wIndex])) {
- status |= 1 << USB_PORT_FEAT_C_RESET;
+ status |= USB_PORT_STAT_C_RESET << 16;
ehci->reset_done [wIndex] = 0;
/* force reset to complete */
@@ -833,7 +833,7 @@
*/
if (temp & PORT_CONNECT) {
- status |= 1 << USB_PORT_FEAT_CONNECTION;
+ status |= USB_PORT_STAT_CONNECTION;
// status may be from integrated TT
if (ehci->has_hostpc) {
temp1 = ehci_readl(ehci, hostpc_reg);
@@ -842,11 +842,11 @@
status |= ehci_port_speed(ehci, temp);
}
if (temp & PORT_PE)
- status |= 1 << USB_PORT_FEAT_ENABLE;
+ status |= USB_PORT_STAT_ENABLE;
/* maybe the port was unsuspended without our knowledge */
if (temp & (PORT_SUSPEND|PORT_RESUME)) {
- status |= 1 << USB_PORT_FEAT_SUSPEND;
+ status |= USB_PORT_STAT_SUSPEND;
} else if (test_bit(wIndex, &ehci->suspended_ports)) {
clear_bit(wIndex, &ehci->suspended_ports);
ehci->reset_done[wIndex] = 0;
@@ -855,13 +855,13 @@
}
if (temp & PORT_OC)
- status |= 1 << USB_PORT_FEAT_OVER_CURRENT;
+ status |= USB_PORT_STAT_OVERCURRENT;
if (temp & PORT_RESET)
- status |= 1 << USB_PORT_FEAT_RESET;
+ status |= USB_PORT_STAT_RESET;
if (temp & PORT_POWER)
- status |= 1 << USB_PORT_FEAT_POWER;
+ status |= USB_PORT_STAT_POWER;
if (test_bit(wIndex, &ehci->port_c_suspend))
- status |= 1 << USB_PORT_FEAT_C_SUSPEND;
+ status |= USB_PORT_STAT_C_SUSPEND << 16;
#ifndef VERBOSE_DEBUG
if (status & ~0xffff) /* only if wPortChange is interesting */