openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

usb: ohci-at91: Set RemoteWakeupConnected bit explicitly. 

The reset value of RWC is 0, set RemoteWakeupConnected bit explicitly
before calling ohci_run, it also fixes the issue that the mass
storage stick connected wasn't suspended when the system suspend.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wenyou Yang 2016-09-29 18:07:07 +08:00 committed by Greg Kroah-Hartman
parent 36de70ea8d
commit ed19ece135
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/usb/host/ohci-at91.c
View File

@ -221,6 +221,12 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
ohci->num_ports = board->ports;
at91_start_hc(pdev);
/*
* The RemoteWakeupConnected bit has to be set explicitly
* before calling ohci_run. The reset value of this bit is 0.
*/
ohci->hc_control = OHCI_CTRL_RWC;
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (retval == 0) {
device_wakeup_enable(hcd->self.controller);
@ -677,9 +683,6 @@ ohci_hcd_at91_drv_suspend(struct device *dev)
* REVISIT: some boards will be able to turn VBUS off...
*/
if (!ohci_at91->wakeup) {
ohci->hc_control = ohci_readl(ohci, &ohci->regs->control);
ohci->hc_control &= OHCI_CTRL_RWC;
ohci_writel(ohci, ohci->hc_control, &ohci->regs->control);
ohci->rh_state = OHCI_RH_HALTED;
/* flush the writes */