On 07/09/15 04:24, Peter Chen wrote:
> On Mon, Aug 24, 2015 at 04:21:15PM +0300, Roger Quadros wrote:
>> This is to prevent missing symbol build error if OTG is
>> enabled (built-in) and HCD core (CONFIG_USB) is module.
>>
>> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
>> Acked-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
>> ---
>> drivers/usb/common/usb-otg-fsm.c | 6 ++++--
>> drivers/usb/phy/phy-fsl-usb.c | 2 ++
>> include/linux/usb/otg-fsm.h | 1 +
>> 3 files changed, 7 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/usb/common/usb-otg-fsm.c b/drivers/usb/common/usb-otg-fsm.c
>> index a46f29a..6e56c8c 100644
>> --- a/drivers/usb/common/usb-otg-fsm.c
>> +++ b/drivers/usb/common/usb-otg-fsm.c
>> @@ -165,8 +165,10 @@ static int otg_set_state(struct otg_fsm *fsm, enum usb_otg_state new_state)
>> otg_loc_conn(fsm, 0);
>> otg_loc_sof(fsm, 1);
>> otg_set_protocol(fsm, PROTO_HOST);
>> - usb_bus_start_enum(fsm->otg->host,
>> - fsm->otg->host->otg_port);usb_bus_start_enum
>> + if (fsm->ops->start_enum) {
>> + fsm->ops->start_enum(fsm->otg->host,
>> + fsm->otg->host->otg_port);
>> + }
>> break;
>> case OTG_STATE_A_IDLE:
>> otg_drv_vbus(fsm, 0);
>> diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c
>> index ee3f2c2..19541ed 100644
>> --- a/drivers/usb/phy/phy-fsl-usb.c
>> +++ b/drivers/usb/phy/phy-fsl-usb.c
>> @@ -783,6 +783,8 @@ static struct otg_fsm_ops fsl_otg_ops = {
>>
>> .start_host = fsl_otg_start_host,
>> .start_gadget = fsl_otg_start_gadget,
>> +
>> + .start_enum = usb_bus_start_enum,
>> };
>>
>> /* Initialize the global variable fsl_otg_dev and request IRQ for OTG */
>> diff --git a/include/linux/usb/otg-fsm.h b/include/linux/usb/otg-fsm.h
>> index 672551c..75e82cc 100644
>> --- a/include/linux/usb/otg-fsm.h
>> +++ b/include/linux/usb/otg-fsm.h
>> @@ -199,6 +199,7 @@ struct otg_fsm_ops {
>> void (*del_timer)(struct otg_fsm *fsm, enum otg_fsm_timer timer);
>> int (*start_host)(struct otg_fsm *fsm, int on);
>> int (*start_gadget)(struct otg_fsm *fsm, int on);
>> + int (*start_enum)(struct usb_bus *bus, unsigned port_num);
>> };
>>
>>
>
> Get one build warning:
>
> In file included from /u/home/b29397/work/projects/usb/drivers/usb/chipidea/udc.c:23:0:
> /u/home/b29397/work/projects/usb/include/linux/usb/otg-fsm.h:207:27: warning: 'struct usb_bus' declared inside parameter list
> int (*start_enum)(struct usb_bus *bus, unsigned port_num);
> ^
> /u/home/b29397/work/projects/usb/include/linux/usb/otg-fsm.h:207:27: warning: its scope is only this definition or declaration, which is probably not what you want
>
> It probably dues to we should not have struct usb_bus* at udc driver
>
How about changing it to struct otg_fsm instead like the other APIs?
And do we leave usb_bus_start_enum() as it is?
cheers,
-roger
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