2020-04-21 12:36:49

by Fabrice Gasnier

[permalink] [raw]
Subject: [PATCH 1/4] usb: dwc2: gadget: move gadget resume after the core is in L0 state

When the remote wakeup interrupt is triggered, lx_state is resumed from L2
to L0 state. But when the gadget resume is called, lx_state is still L2.
This prevents the resume callback to queue any request. Any attempt
to queue a request from resume callback will result in:
- "submit request only in active state" debug message to be issued
- dwc2_hsotg_ep_queue() returns -EAGAIN

Move the call to resume gadget after the core is put in DWC2_L0 state.

Signed-off-by: Fabrice Gasnier <[email protected]>
---
drivers/usb/dwc2/core_intr.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 876ff31..b8ebda5 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -404,9 +404,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
}

if (dwc2_is_device_mode(hsotg)) {
+ enum dwc2_lx_state lx_state = hsotg->lx_state;
+
dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
dwc2_readl(hsotg, DSTS));
- if (hsotg->lx_state == DWC2_L2) {
+ if (lx_state == DWC2_L2) {
u32 dctl = dwc2_readl(hsotg, DCTL);

/* Clear Remote Wakeup Signaling */
@@ -415,11 +417,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
ret = dwc2_exit_partial_power_down(hsotg, true);
if (ret && (ret != -ENOTSUPP))
dev_err(hsotg->dev, "exit power_down failed\n");
-
- call_gadget(hsotg, resume);
}
/* Change to L0 state */
hsotg->lx_state = DWC2_L0;
+
+ /* Gadget may queue new requests upon resume to L0 state */
+ if (lx_state == DWC2_L2)
+ call_gadget(hsotg, resume);
} else {
if (hsotg->params.power_down)
return;
--
2.7.4


2020-04-22 14:50:39

by Minas Harutyunyan

[permalink] [raw]
Subject: Re: [PATCH 1/4] usb: dwc2: gadget: move gadget resume after the core is in L0 state

Hi Fabrice,

On 4/21/2020 4:32 PM, Fabrice Gasnier wrote:
> When the remote wakeup interrupt is triggered, lx_state is resumed from L2
> to L0 state. But when the gadget resume is called, lx_state is still L2.
> This prevents the resume callback to queue any request. Any attempt
> to queue a request from resume callback will result in:
> - "submit request only in active state" debug message to be issued
> - dwc2_hsotg_ep_queue() returns -EAGAIN
>
> Move the call to resume gadget after the core is put in DWC2_L0 state.
>
> Signed-off-by: Fabrice Gasnier <[email protected]>
> ---
> drivers/usb/dwc2/core_intr.c | 10 +++++++---
> 1 file changed, 7 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
> index 876ff31..b8ebda5 100644
> --- a/drivers/usb/dwc2/core_intr.c
> +++ b/drivers/usb/dwc2/core_intr.c
> @@ -404,9 +404,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
> }
>
> if (dwc2_is_device_mode(hsotg)) {
> + enum dwc2_lx_state lx_state = hsotg->lx_state;
> +
> dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
> dwc2_readl(hsotg, DSTS));
> - if (hsotg->lx_state == DWC2_L2) {
> + if (lx_state == DWC2_L2) {
> u32 dctl = dwc2_readl(hsotg, DCTL);
>
> /* Clear Remote Wakeup Signaling */
> @@ -415,11 +417,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
> ret = dwc2_exit_partial_power_down(hsotg, true);
> if (ret && (ret != -ENOTSUPP))
> dev_err(hsotg->dev, "exit power_down failed\n");
> -
> - call_gadget(hsotg, resume);
> }
> /* Change to L0 state */
> hsotg->lx_state = DWC2_L0;
> +
> + /* Gadget may queue new requests upon resume to L0 state */
> + if (lx_state == DWC2_L2)
> + call_gadget(hsotg, resume);
> } else {
> if (hsotg->params.power_down)
> return;
>

What about below patch without introducing additional variable.

diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 876ff31261d5..543865e31c72 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -416,6 +416,8 @@ static void dwc2_handle_wakeup_detected_intr(struct
dwc2_hsotg *hsotg)
if (ret && (ret != -ENOTSUPP))
dev_err(hsotg->dev, "exit power_down
failed\n");

+ /* Change to L0 state */
+ hsotg->lx_state = DWC2_L0;
call_gadget(hsotg, resume);
}
/* Change to L0 state */


Thanks,
Minas

2020-04-22 15:58:47

by Fabrice Gasnier

[permalink] [raw]
Subject: Re: [PATCH 1/4] usb: dwc2: gadget: move gadget resume after the core is in L0 state

On 4/22/20 4:48 PM, Minas Harutyunyan wrote:
> Hi Fabrice,
>
> On 4/21/2020 4:32 PM, Fabrice Gasnier wrote:
>> When the remote wakeup interrupt is triggered, lx_state is resumed from L2
>> to L0 state. But when the gadget resume is called, lx_state is still L2.
>> This prevents the resume callback to queue any request. Any attempt
>> to queue a request from resume callback will result in:
>> - "submit request only in active state" debug message to be issued
>> - dwc2_hsotg_ep_queue() returns -EAGAIN
>>
>> Move the call to resume gadget after the core is put in DWC2_L0 state.
>>
>> Signed-off-by: Fabrice Gasnier <[email protected]>
>> ---
>> drivers/usb/dwc2/core_intr.c | 10 +++++++---
>> 1 file changed, 7 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>> index 876ff31..b8ebda5 100644
>> --- a/drivers/usb/dwc2/core_intr.c
>> +++ b/drivers/usb/dwc2/core_intr.c
>> @@ -404,9 +404,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>> }
>>
>> if (dwc2_is_device_mode(hsotg)) {
>> + enum dwc2_lx_state lx_state = hsotg->lx_state;
>> +
>> dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
>> dwc2_readl(hsotg, DSTS));
>> - if (hsotg->lx_state == DWC2_L2) {
>> + if (lx_state == DWC2_L2) {
>> u32 dctl = dwc2_readl(hsotg, DCTL);
>>
>> /* Clear Remote Wakeup Signaling */
>> @@ -415,11 +417,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>> ret = dwc2_exit_partial_power_down(hsotg, true);
>> if (ret && (ret != -ENOTSUPP))
>> dev_err(hsotg->dev, "exit power_down failed\n");
>> -
>> - call_gadget(hsotg, resume);
>> }
>> /* Change to L0 state */
>> hsotg->lx_state = DWC2_L0;
>> +
>> + /* Gadget may queue new requests upon resume to L0 state */
>> + if (lx_state == DWC2_L2)
>> + call_gadget(hsotg, resume);
>> } else {
>> if (hsotg->params.power_down)
>> return;
>>
>
> What about below patch without introducing additional variable.
>
> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
> index 876ff31261d5..543865e31c72 100644
> --- a/drivers/usb/dwc2/core_intr.c
> +++ b/drivers/usb/dwc2/core_intr.c
> @@ -416,6 +416,8 @@ static void dwc2_handle_wakeup_detected_intr(struct
> dwc2_hsotg *hsotg)
> if (ret && (ret != -ENOTSUPP))
> dev_err(hsotg->dev, "exit power_down
> failed\n");
>
> + /* Change to L0 state */
> + hsotg->lx_state = DWC2_L0;

Hi Minas,

That was my first approach locally, but I added a variable to avoid do
it twice... few lines after.

But if you prefer, I can change in V2 ?

Please let me know.

Thanks,
Fabrice

> call_gadget(hsotg, resume);
> }
> /* Change to L0 state */
>
>
> Thanks,
> Minas
>

2020-04-22 16:18:17

by Minas Harutyunyan

[permalink] [raw]
Subject: Re: [PATCH 1/4] usb: dwc2: gadget: move gadget resume after the core is in L0 state

Hi Fabrice,

On 4/22/2020 7:57 PM, Fabrice Gasnier wrote:
> On 4/22/20 4:48 PM, Minas Harutyunyan wrote:
>> Hi Fabrice,
>>
>> On 4/21/2020 4:32 PM, Fabrice Gasnier wrote:
>>> When the remote wakeup interrupt is triggered, lx_state is resumed from L2
>>> to L0 state. But when the gadget resume is called, lx_state is still L2.
>>> This prevents the resume callback to queue any request. Any attempt
>>> to queue a request from resume callback will result in:
>>> - "submit request only in active state" debug message to be issued
>>> - dwc2_hsotg_ep_queue() returns -EAGAIN
>>>
>>> Move the call to resume gadget after the core is put in DWC2_L0 state.
>>>
>>> Signed-off-by: Fabrice Gasnier <[email protected]>
>>> ---
>>> drivers/usb/dwc2/core_intr.c | 10 +++++++---
>>> 1 file changed, 7 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>>> index 876ff31..b8ebda5 100644
>>> --- a/drivers/usb/dwc2/core_intr.c
>>> +++ b/drivers/usb/dwc2/core_intr.c
>>> @@ -404,9 +404,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>>> }
>>>
>>> if (dwc2_is_device_mode(hsotg)) {
>>> + enum dwc2_lx_state lx_state = hsotg->lx_state;
>>> +
>>> dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
>>> dwc2_readl(hsotg, DSTS));
>>> - if (hsotg->lx_state == DWC2_L2) {
>>> + if (lx_state == DWC2_L2) {
>>> u32 dctl = dwc2_readl(hsotg, DCTL);
>>>
>>> /* Clear Remote Wakeup Signaling */
>>> @@ -415,11 +417,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>>> ret = dwc2_exit_partial_power_down(hsotg, true);
>>> if (ret && (ret != -ENOTSUPP))
>>> dev_err(hsotg->dev, "exit power_down failed\n");
>>> -
>>> - call_gadget(hsotg, resume);
>>> }
>>> /* Change to L0 state */
>>> hsotg->lx_state = DWC2_L0;
>>> +
>>> + /* Gadget may queue new requests upon resume to L0 state */
>>> + if (lx_state == DWC2_L2)
>>> + call_gadget(hsotg, resume);
>>> } else {
>>> if (hsotg->params.power_down)
>>> return;
>>>
>>
>> What about below patch without introducing additional variable.
>>
>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>> index 876ff31261d5..543865e31c72 100644
>> --- a/drivers/usb/dwc2/core_intr.c
>> +++ b/drivers/usb/dwc2/core_intr.c
>> @@ -416,6 +416,8 @@ static void dwc2_handle_wakeup_detected_intr(struct
>> dwc2_hsotg *hsotg)
>> if (ret && (ret != -ENOTSUPP))
>> dev_err(hsotg->dev, "exit power_down
>> failed\n");
>>
>> + /* Change to L0 state */
>> + hsotg->lx_state = DWC2_L0;
>
> Hi Minas,
>
> That was my first approach locally, but I added a variable to avoid do
> it twice... few lines after.
>
> But if you prefer, I can change in V2 ?
>
> Please let me know.
>
> Thanks,
> Fabrice
>
>> call_gadget(hsotg, resume);
>> }
>> /* Change to L0 state */
>>
>>
>> Thanks,
>> Minas
>>
To avoid twice setting lx_state you can add 'else' before second setting.

diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
index 876ff31261d5..f59dabd46e60 100644
--- a/drivers/usb/dwc2/core_intr.c
+++ b/drivers/usb/dwc2/core_intr.c
@@ -416,10 +416,14 @@ static void
dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
if (ret && (ret != -ENOTSUPP))
dev_err(hsotg->dev, "exit power_down
failed\n");

+ /* Change to L0 state */
+ hsotg->lx_state = DWC2_L0;
call_gadget(hsotg, resume);
}
- /* Change to L0 state */
- hsotg->lx_state = DWC2_L0;
+ else {
+ /* Change to L0 state */
+ hsotg->lx_state = DWC2_L0;
+ }
} else {
if (hsotg->params.power_down)
return;



Am I missed something?

Thanks,
Minas

2020-04-23 09:29:41

by Fabrice Gasnier

[permalink] [raw]
Subject: Re: [PATCH 1/4] usb: dwc2: gadget: move gadget resume after the core is in L0 state

On 4/22/20 6:16 PM, Minas Harutyunyan wrote:
> Hi Fabrice,
>
> On 4/22/2020 7:57 PM, Fabrice Gasnier wrote:
>> On 4/22/20 4:48 PM, Minas Harutyunyan wrote:
>>> Hi Fabrice,
>>>
>>> On 4/21/2020 4:32 PM, Fabrice Gasnier wrote:
>>>> When the remote wakeup interrupt is triggered, lx_state is resumed from L2
>>>> to L0 state. But when the gadget resume is called, lx_state is still L2.
>>>> This prevents the resume callback to queue any request. Any attempt
>>>> to queue a request from resume callback will result in:
>>>> - "submit request only in active state" debug message to be issued
>>>> - dwc2_hsotg_ep_queue() returns -EAGAIN
>>>>
>>>> Move the call to resume gadget after the core is put in DWC2_L0 state.
>>>>
>>>> Signed-off-by: Fabrice Gasnier <[email protected]>
>>>> ---
>>>> drivers/usb/dwc2/core_intr.c | 10 +++++++---
>>>> 1 file changed, 7 insertions(+), 3 deletions(-)
>>>>
>>>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>>>> index 876ff31..b8ebda5 100644
>>>> --- a/drivers/usb/dwc2/core_intr.c
>>>> +++ b/drivers/usb/dwc2/core_intr.c
>>>> @@ -404,9 +404,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>>>> }
>>>>
>>>> if (dwc2_is_device_mode(hsotg)) {
>>>> + enum dwc2_lx_state lx_state = hsotg->lx_state;
>>>> +
>>>> dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
>>>> dwc2_readl(hsotg, DSTS));
>>>> - if (hsotg->lx_state == DWC2_L2) {
>>>> + if (lx_state == DWC2_L2) {
>>>> u32 dctl = dwc2_readl(hsotg, DCTL);
>>>>
>>>> /* Clear Remote Wakeup Signaling */
>>>> @@ -415,11 +417,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>>>> ret = dwc2_exit_partial_power_down(hsotg, true);
>>>> if (ret && (ret != -ENOTSUPP))
>>>> dev_err(hsotg->dev, "exit power_down failed\n");
>>>> -
>>>> - call_gadget(hsotg, resume);
>>>> }
>>>> /* Change to L0 state */
>>>> hsotg->lx_state = DWC2_L0;
>>>> +
>>>> + /* Gadget may queue new requests upon resume to L0 state */
>>>> + if (lx_state == DWC2_L2)
>>>> + call_gadget(hsotg, resume);
>>>> } else {
>>>> if (hsotg->params.power_down)
>>>> return;
>>>>
>>>
>>> What about below patch without introducing additional variable.
>>>
>>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>>> index 876ff31261d5..543865e31c72 100644
>>> --- a/drivers/usb/dwc2/core_intr.c
>>> +++ b/drivers/usb/dwc2/core_intr.c
>>> @@ -416,6 +416,8 @@ static void dwc2_handle_wakeup_detected_intr(struct
>>> dwc2_hsotg *hsotg)
>>> if (ret && (ret != -ENOTSUPP))
>>> dev_err(hsotg->dev, "exit power_down
>>> failed\n");
>>>
>>> + /* Change to L0 state */
>>> + hsotg->lx_state = DWC2_L0;
>>
>> Hi Minas,
>>
>> That was my first approach locally, but I added a variable to avoid do
>> it twice... few lines after.
>>
>> But if you prefer, I can change in V2 ?
>>
>> Please let me know.
>>
>> Thanks,
>> Fabrice
>>
>>> call_gadget(hsotg, resume);
>>> }
>>> /* Change to L0 state */
>>>
>>>
>>> Thanks,
>>> Minas
>>>
> To avoid twice setting lx_state you can add 'else' before second setting.

Hi Minas,

Thanks for your quick answer. Sure, I'll update it in v2.

Also, do you think this can/should be marked as a fix ?
- e.g. add a Fixes tag?

Fixes: f81f46e1f530 ("usb: dwc2: implement hibernation during bus
suspend/resume")

Please advise,
Best Regards,
Fabrice

>
> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
> index 876ff31261d5..f59dabd46e60 100644
> --- a/drivers/usb/dwc2/core_intr.c
> +++ b/drivers/usb/dwc2/core_intr.c
> @@ -416,10 +416,14 @@ static void
> dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
> if (ret && (ret != -ENOTSUPP))
> dev_err(hsotg->dev, "exit power_down
> failed\n");
>
> + /* Change to L0 state */
> + hsotg->lx_state = DWC2_L0;
> call_gadget(hsotg, resume);
> }
> - /* Change to L0 state */
> - hsotg->lx_state = DWC2_L0;
> + else {
> + /* Change to L0 state */
> + hsotg->lx_state = DWC2_L0;
> + }
> } else {
> if (hsotg->params.power_down)
> return;
>
>
>
> Am I missed something?
>
> Thanks,
> Minas
>

2020-04-23 10:39:10

by Minas Harutyunyan

[permalink] [raw]
Subject: Re: [PATCH 1/4] usb: dwc2: gadget: move gadget resume after the core is in L0 state

Hi Fabrice,

On 4/23/2020 1:27 PM, Fabrice Gasnier wrote:
> On 4/22/20 6:16 PM, Minas Harutyunyan wrote:
>> Hi Fabrice,
>>
>> On 4/22/2020 7:57 PM, Fabrice Gasnier wrote:
>>> On 4/22/20 4:48 PM, Minas Harutyunyan wrote:
>>>> Hi Fabrice,
>>>>
>>>> On 4/21/2020 4:32 PM, Fabrice Gasnier wrote:
>>>>> When the remote wakeup interrupt is triggered, lx_state is resumed from L2
>>>>> to L0 state. But when the gadget resume is called, lx_state is still L2.
>>>>> This prevents the resume callback to queue any request. Any attempt
>>>>> to queue a request from resume callback will result in:
>>>>> - "submit request only in active state" debug message to be issued
>>>>> - dwc2_hsotg_ep_queue() returns -EAGAIN
>>>>>
>>>>> Move the call to resume gadget after the core is put in DWC2_L0 state.
>>>>>
>>>>> Signed-off-by: Fabrice Gasnier <[email protected]>
>>>>> ---
>>>>> drivers/usb/dwc2/core_intr.c | 10 +++++++---
>>>>> 1 file changed, 7 insertions(+), 3 deletions(-)
>>>>>
>>>>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>>>>> index 876ff31..b8ebda5 100644
>>>>> --- a/drivers/usb/dwc2/core_intr.c
>>>>> +++ b/drivers/usb/dwc2/core_intr.c
>>>>> @@ -404,9 +404,11 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>>>>> }
>>>>>
>>>>> if (dwc2_is_device_mode(hsotg)) {
>>>>> + enum dwc2_lx_state lx_state = hsotg->lx_state;
>>>>> +
>>>>> dev_dbg(hsotg->dev, "DSTS=0x%0x\n",
>>>>> dwc2_readl(hsotg, DSTS));
>>>>> - if (hsotg->lx_state == DWC2_L2) {
>>>>> + if (lx_state == DWC2_L2) {
>>>>> u32 dctl = dwc2_readl(hsotg, DCTL);
>>>>>
>>>>> /* Clear Remote Wakeup Signaling */
>>>>> @@ -415,11 +417,13 @@ static void dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>>>>> ret = dwc2_exit_partial_power_down(hsotg, true);
>>>>> if (ret && (ret != -ENOTSUPP))
>>>>> dev_err(hsotg->dev, "exit power_down failed\n");
>>>>> -
>>>>> - call_gadget(hsotg, resume);
>>>>> }
>>>>> /* Change to L0 state */
>>>>> hsotg->lx_state = DWC2_L0;
>>>>> +
>>>>> + /* Gadget may queue new requests upon resume to L0 state */
>>>>> + if (lx_state == DWC2_L2)
>>>>> + call_gadget(hsotg, resume);
>>>>> } else {
>>>>> if (hsotg->params.power_down)
>>>>> return;
>>>>>
>>>>
>>>> What about below patch without introducing additional variable.
>>>>
>>>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>>>> index 876ff31261d5..543865e31c72 100644
>>>> --- a/drivers/usb/dwc2/core_intr.c
>>>> +++ b/drivers/usb/dwc2/core_intr.c
>>>> @@ -416,6 +416,8 @@ static void dwc2_handle_wakeup_detected_intr(struct
>>>> dwc2_hsotg *hsotg)
>>>> if (ret && (ret != -ENOTSUPP))
>>>> dev_err(hsotg->dev, "exit power_down
>>>> failed\n");
>>>>
>>>> + /* Change to L0 state */
>>>> + hsotg->lx_state = DWC2_L0;
>>>
>>> Hi Minas,
>>>
>>> That was my first approach locally, but I added a variable to avoid do
>>> it twice... few lines after.
>>>
>>> But if you prefer, I can change in V2 ?
>>>
>>> Please let me know.
>>>
>>> Thanks,
>>> Fabrice
>>>
>>>> call_gadget(hsotg, resume);
>>>> }
>>>> /* Change to L0 state */
>>>>
>>>>
>>>> Thanks,
>>>> Minas
>>>>
>> To avoid twice setting lx_state you can add 'else' before second setting.
>
> Hi Minas,
>
> Thanks for your quick answer. Sure, I'll update it in v2.
>
> Also, do you think this can/should be marked as a fix ?
> - e.g. add a Fixes tag?
>
> Fixes: f81f46e1f530 ("usb: dwc2: implement hibernation during bus
> suspend/resume")
>

Yes, go ahead to submit V2 with mentioned "Fixes:" tag.

Thanks,
Minas


> Please advise,
> Best Regards,
> Fabrice
>
>>
>> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c
>> index 876ff31261d5..f59dabd46e60 100644
>> --- a/drivers/usb/dwc2/core_intr.c
>> +++ b/drivers/usb/dwc2/core_intr.c
>> @@ -416,10 +416,14 @@ static void
>> dwc2_handle_wakeup_detected_intr(struct dwc2_hsotg *hsotg)
>> if (ret && (ret != -ENOTSUPP))
>> dev_err(hsotg->dev, "exit power_down
>> failed\n");
>>
>> + /* Change to L0 state */
>> + hsotg->lx_state = DWC2_L0;
>> call_gadget(hsotg, resume);
>> }
>> - /* Change to L0 state */
>> - hsotg->lx_state = DWC2_L0;
>> + else {
>> + /* Change to L0 state */
>> + hsotg->lx_state = DWC2_L0;
>> + }
>> } else {
>> if (hsotg->params.power_down)
>> return;
>>
>>
>>
>> Am I missed something?
>>
>> Thanks,
>> Minas
>>