For function ehci_bus_resume()
- Added flag resume_needed
No need to wait for 20ms if no port was suspended
- Change mdelay to msleep
- release and reacquire the spinlock around mdelay
Signed-off-by: vikram pandita <vikram.pandita@ti.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
u32 temp;
u32 power_okay;
int i;
u32 temp;
u32 power_okay;
int i;
if (time_before (jiffies, ehci->next_statechange))
msleep(5);
if (time_before (jiffies, ehci->next_statechange))
msleep(5);
/* Some controller/firmware combinations need a delay during which
* they set up the port statuses. See Bugzilla #8190. */
/* Some controller/firmware combinations need a delay during which
* they set up the port statuses. See Bugzilla #8190. */
+ spin_unlock_irq(&ehci->lock);
+ msleep(8);
+ spin_lock_irq(&ehci->lock);
/* manually resume the ports we suspended during bus_suspend() */
i = HCS_N_PORTS (ehci->hcs_params);
/* manually resume the ports we suspended during bus_suspend() */
i = HCS_N_PORTS (ehci->hcs_params);
temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
if (test_bit(i, &ehci->bus_suspended) &&
temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
if (test_bit(i, &ehci->bus_suspended) &&
+ (temp & PORT_SUSPEND)) {
ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
}
ehci_writel(ehci, temp, &ehci->regs->port_status [i]);
}
+
+ /* msleep for 20ms only if code is trying to resume port */
+ if (resume_needed) {
+ spin_unlock_irq(&ehci->lock);
+ msleep(20);
+ spin_lock_irq(&ehci->lock);
+ }
+
i = HCS_N_PORTS (ehci->hcs_params);
i = HCS_N_PORTS (ehci->hcs_params);
while (i--) {
temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
if (test_bit(i, &ehci->bus_suspended) &&
while (i--) {
temp = ehci_readl(ehci, &ehci->regs->port_status [i]);
if (test_bit(i, &ehci->bus_suspended) &&