diff options
| author | Li Jun <jun.li@freescale.com> | 2015-01-27 11:30:35 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-01-28 11:08:36 +0800 |
| commit | c7c554fdcd714d0a858e12d7bdca316c509c1197 (patch) | |
| tree | 5ebdb0fe0f2a328cc9eb1eaeff18dc69bc6d619d | |
| parent | 42e09a4febb98f10019e442378c2118b105e59bf (diff) | |
MLK-10101-2 usb: chipidea: otg: delay to enter low power mode for a_host
There is 2s delay for controller resume from usb wakeup case already,
in OTG fsm mode, A-dev can start a new session via sys input file(means
not via usb wakeup), in this case, A-dev still need the 2s delay for
host root hub access registers, otherwise system will hang due to access
register at low power mode.
Signed-off-by: Li Jun <jun.li@freescale.com>
| -rw-r--r-- | drivers/usb/chipidea/otg_fsm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/otg_fsm.c b/drivers/usb/chipidea/otg_fsm.c index ac3dcf3837a0..04cdecec8672 100644 --- a/drivers/usb/chipidea/otg_fsm.c +++ b/drivers/usb/chipidea/otg_fsm.c @@ -699,6 +699,10 @@ int ci_otg_fsm_work(struct ci_hdrc *ci) */ ci_otg_queue_work(ci); } + } else if (ci->fsm.otg->state == OTG_STATE_A_HOST) { + pm_runtime_mark_last_busy(ci->dev); + pm_runtime_put_autosuspend(ci->dev); + return 0; } } pm_runtime_put_sync(ci->dev); |