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authorAlan Stern <stern@rowland.harvard.edu>2010-03-04 17:05:08 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-20 13:21:31 -0700
commit749da5f82fe33ff68dd4aa1a5e35cd9aa6246dab (patch)
tree2c0a7c689ab6a58f3a799ae51e41ac885e212194 /drivers/usb/host/sl811-hcd.c
parent288ead45fa6637e959015d055304f521cbbc0575 (diff)
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>
Diffstat (limited to 'drivers/usb/host/sl811-hcd.c')
-rw-r--r--drivers/usb/host/sl811-hcd.c52
1 files changed, 26 insertions, 26 deletions
diff --git a/drivers/usb/host/sl811-hcd.c b/drivers/usb/host/sl811-hcd.c
index dcd7fab7179..bcf9f0e809d 100644
--- a/drivers/usb/host/sl811-hcd.c
+++ b/drivers/usb/host/sl811-hcd.c
@@ -90,10 +90,10 @@ static void port_power(struct sl811 *sl811, int is_on)
/* hub is inactive unless the port is powered */
if (is_on) {
- if (sl811->port1 & (1 << USB_PORT_FEAT_POWER))
+ if (sl811->port1 & USB_PORT_STAT_POWER)
return;
- sl811->port1 = (1 << USB_PORT_FEAT_POWER);
+ sl811->port1 = USB_PORT_STAT_POWER;
sl811->irq_enable = SL11H_INTMASK_INSRMV;
} else {
sl811->port1 = 0;
@@ -407,7 +407,7 @@ static struct sl811h_ep *start(struct sl811 *sl811, u8 bank)
static inline void start_transfer(struct sl811 *sl811)
{
- if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND))
+ if (sl811->port1 & USB_PORT_STAT_SUSPEND)
return;
if (sl811->active_a == NULL) {
sl811->active_a = start(sl811, SL811_EP_A(SL811_HOST_BUF));
@@ -721,23 +721,23 @@ retry:
* force the reset and make khubd clean up later.
*/
if (irqstat & SL11H_INTMASK_RD)
- sl811->port1 &= ~(1 << USB_PORT_FEAT_CONNECTION);
+ sl811->port1 &= ~USB_PORT_STAT_CONNECTION;
else
- sl811->port1 |= 1 << USB_PORT_FEAT_CONNECTION;
+ sl811->port1 |= USB_PORT_STAT_CONNECTION;
- sl811->port1 |= 1 << USB_PORT_FEAT_C_CONNECTION;
+ sl811->port1 |= USB_PORT_STAT_C_CONNECTION << 16;
} else if (irqstat & SL11H_INTMASK_RD) {
- if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)) {
+ if (sl811->port1 & USB_PORT_STAT_SUSPEND) {
DBG("wakeup\n");
- sl811->port1 |= 1 << USB_PORT_FEAT_C_SUSPEND;
+ sl811->port1 |= USB_PORT_STAT_C_SUSPEND << 16;
sl811->stat_wake++;
} else
irqstat &= ~SL11H_INTMASK_RD;
}
if (irqstat) {
- if (sl811->port1 & (1 << USB_PORT_FEAT_ENABLE))
+ if (sl811->port1 & USB_PORT_STAT_ENABLE)
start_transfer(sl811);
ret = IRQ_HANDLED;
if (retries--)
@@ -819,7 +819,7 @@ static int sl811h_urb_enqueue(
spin_lock_irqsave(&sl811->lock, flags);
/* don't submit to a dead or disabled port */
- if (!(sl811->port1 & (1 << USB_PORT_FEAT_ENABLE))
+ if (!(sl811->port1 & USB_PORT_STAT_ENABLE)
|| !HC_IS_RUNNING(hcd->state)) {
retval = -ENODEV;
kfree(ep);
@@ -1119,8 +1119,8 @@ sl811h_timer(unsigned long _sl811)
unsigned long flags;
u8 irqstat;
u8 signaling = sl811->ctrl1 & SL11H_CTL1MASK_FORCE;
- const u32 mask = (1 << USB_PORT_FEAT_CONNECTION)
- | (1 << USB_PORT_FEAT_ENABLE)
+ const u32 mask = USB_PORT_STAT_CONNECTION
+ | USB_PORT_STAT_ENABLE
| USB_PORT_STAT_LOW_SPEED;
spin_lock_irqsave(&sl811->lock, flags);
@@ -1135,8 +1135,8 @@ sl811h_timer(unsigned long _sl811)
switch (signaling) {
case SL11H_CTL1MASK_SE0:
DBG("end reset\n");
- sl811->port1 = (1 << USB_PORT_FEAT_C_RESET)
- | (1 << USB_PORT_FEAT_POWER);
+ sl811->port1 = (USB_PORT_STAT_C_RESET << 16)
+ | USB_PORT_STAT_POWER;
sl811->ctrl1 = 0;
/* don't wrongly ack RD */
if (irqstat & SL11H_INTMASK_INSRMV)
@@ -1144,7 +1144,7 @@ sl811h_timer(unsigned long _sl811)
break;
case SL11H_CTL1MASK_K:
DBG("end resume\n");
- sl811->port1 &= ~(1 << USB_PORT_FEAT_SUSPEND);
+ sl811->port1 &= ~USB_PORT_STAT_SUSPEND;
break;
default:
DBG("odd timer signaling: %02x\n", signaling);
@@ -1154,9 +1154,9 @@ sl811h_timer(unsigned long _sl811)
if (irqstat & SL11H_INTMASK_RD) {
/* usbcore nukes all pending transactions on disconnect */
- if (sl811->port1 & (1 << USB_PORT_FEAT_CONNECTION))
- sl811->port1 |= (1 << USB_PORT_FEAT_C_CONNECTION)
- | (1 << USB_PORT_FEAT_C_ENABLE);
+ if (sl811->port1 & USB_PORT_STAT_CONNECTION)
+ sl811->port1 |= (USB_PORT_STAT_C_CONNECTION << 16)
+ | (USB_PORT_STAT_C_ENABLE << 16);
sl811->port1 &= ~mask;
sl811->irq_enable = SL11H_INTMASK_INSRMV;
} else {
@@ -1166,7 +1166,7 @@ sl811h_timer(unsigned long _sl811)
sl811->irq_enable = SL11H_INTMASK_INSRMV | SL11H_INTMASK_RD;
}
- if (sl811->port1 & (1 << USB_PORT_FEAT_CONNECTION)) {
+ if (sl811->port1 & USB_PORT_STAT_CONNECTION) {
u8 ctrl2 = SL811HS_CTL2_INIT;
sl811->irq_enable |= SL11H_INTMASK_DONE_A;
@@ -1233,7 +1233,7 @@ sl811h_hub_control(
switch (wValue) {
case USB_PORT_FEAT_ENABLE:
- sl811->port1 &= (1 << USB_PORT_FEAT_POWER);
+ sl811->port1 &= USB_PORT_STAT_POWER;
sl811->ctrl1 = 0;
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
sl811->irq_enable = SL11H_INTMASK_INSRMV;
@@ -1241,7 +1241,7 @@ sl811h_hub_control(
sl811->irq_enable);
break;
case USB_PORT_FEAT_SUSPEND:
- if (!(sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND)))
+ if (!(sl811->port1 & USB_PORT_STAT_SUSPEND))
break;
/* 20 msec of resume/K signaling, other irqs blocked */
@@ -1290,9 +1290,9 @@ sl811h_hub_control(
goto error;
switch (wValue) {
case USB_PORT_FEAT_SUSPEND:
- if (sl811->port1 & (1 << USB_PORT_FEAT_RESET))
+ if (sl811->port1 & USB_PORT_STAT_RESET)
goto error;
- if (!(sl811->port1 & (1 << USB_PORT_FEAT_ENABLE)))
+ if (!(sl811->port1 & USB_PORT_STAT_ENABLE))
goto error;
DBG("suspend...\n");
@@ -1303,9 +1303,9 @@ sl811h_hub_control(
port_power(sl811, 1);
break;
case USB_PORT_FEAT_RESET:
- if (sl811->port1 & (1 << USB_PORT_FEAT_SUSPEND))
+ if (sl811->port1 & USB_PORT_STAT_SUSPEND)
goto error;
- if (!(sl811->port1 & (1 << USB_PORT_FEAT_POWER)))
+ if (!(sl811->port1 & USB_PORT_STAT_POWER))
break;
/* 50 msec of reset/SE0 signaling, irqs blocked */
@@ -1314,7 +1314,7 @@ sl811h_hub_control(
sl811->irq_enable);
sl811->ctrl1 = SL11H_CTL1MASK_SE0;
sl811_write(sl811, SL11H_CTLREG1, sl811->ctrl1);
- sl811->port1 |= (1 << USB_PORT_FEAT_RESET);
+ sl811->port1 |= USB_PORT_STAT_RESET;
mod_timer(&sl811->timer, jiffies
+ msecs_to_jiffies(50));
break;