Messages in this thread | | | Date | Mon, 13 Jul 2015 13:13:54 +0300 | From | Roger Quadros <> | Subject | Re: [PATCH v3 04/11] otg-fsm: move usb_bus_start_enum into otg-fsm->ops |
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Peter,
On 13/07/15 04:58, Peter Chen wrote: > On Wed, Jul 08, 2015 at 01:19:30PM +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. >> > > We may let the OTG-DRD/OTG-FSM depends on CONFIG_USB to fix it.
CONFIG_OTG already depends on CONFIG_USB as it is a sub-option of CONFIG_USB. It doesn't depend on CONFIG_USB_GADGET and that can be fixed.
But dependency is not the problem here. Symbols not available to OTG driver when USB/GADGET is 'm' is the problem.
e.g. CONFIG_USB_OTG is always built-in. we need to work if CONFIG_USB is 'm'/'y' _and_ if CONFIG_USB_GADGET is 'm'/'y'
cheers, -roger
> > Peter > >> Signed-off-by: Roger Quadros <rogerq@ti.com> >> --- >> 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 1873eb3..156fd25 100644 >> --- a/drivers/usb/common/usb-otg-fsm.c >> +++ b/drivers/usb/common/usb-otg-fsm.c >> @@ -166,8 +166,10 @@ 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); >> + 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 c631dde..22d8baa 100644 >> --- a/include/linux/usb/otg-fsm.h >> +++ b/include/linux/usb/otg-fsm.h >> @@ -198,6 +198,7 @@ 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); >> }; >> >> >> -- >> 2.1.4 >> >
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