On Wed, Jul 30, 2014 at 1:38 PM, Paul Zimmerman <paul.zimmer...@synopsys.com> wrote: >> From: linux-usb-ow...@vger.kernel.org >> [mailto:linux-usb-ow...@vger.kernel.org] On Behalf Of dingu...@altera.com >> Sent: Wednesday, July 30, 2014 8:21 AM >> >> Make dwc2_handle_common_intr call the gadget interrupt function when >> operating >> in peripheral mode. Remove the spinlock functions in s3c_hsotg_irq as >> dwc2_handle_common_intr() already has the spinlocks. >> >> Remove duplicate interrupt conditions that was in gadget, as those are >> handled >> by dwc2 common interrupt handler. >> >> Signed-off-by: Dinh Nguyen <dingu...@altera.com> >> --- >> v2: Keep interrupt handler for host and peripheral modes separate >> --- >> drivers/usb/dwc2/core.h | 3 +++ >> drivers/usb/dwc2/core_intr.c | 3 +++ >> drivers/usb/dwc2/gadget.c | 50 >> ++++-------------------------------------- >> 3 files changed, 10 insertions(+), 46 deletions(-) >> >> diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h >> index 28541a8..b86673c 100644 >> --- a/drivers/usb/dwc2/core.h >> +++ b/drivers/usb/dwc2/core.h >> @@ -961,12 +961,15 @@ extern u16 dwc2_get_otg_version(struct dwc2_hsotg >> *hsotg); >> extern int s3c_hsotg_remove(struct dwc2_hsotg *hsotg); >> extern void s3c_hsotg_core_init(struct dwc2_hsotg *dwc2); >> extern int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq); >> +irqreturn_t s3c_hsotg_irq(int irq, void *pw); >> #else >> static inline void s3c_hsotg_core_init(struct dwc2_hsotg *dwc2) {} >> static inline int s3c_hsotg_remove(struct dwc2_hsotg *dwc2) >> { return 0; } >> static inline int dwc2_gadget_init(struct dwc2_hsotg *hsotg, int irq) >> { return 0; } >> +static inline irqreturn_t s3c_hsotg_irq(int irq, void *pw) >> +{ return IRQ_HANDLED; } >> #endif >> >> #if defined(CONFIG_USB_DWC2_HOST) || defined(CONFIG_USB_DWC2_DUAL_ROLE) >> diff --git a/drivers/usb/dwc2/core_intr.c b/drivers/usb/dwc2/core_intr.c >> index c93918b..24d4c0d 100644 >> --- a/drivers/usb/dwc2/core_intr.c >> +++ b/drivers/usb/dwc2/core_intr.c >> @@ -472,6 +472,9 @@ irqreturn_t dwc2_handle_common_intr(int irq, void *dev) >> >> spin_lock(&hsotg->lock); >> >> + if (dwc2_is_device_mode(hsotg)) >> + retval = s3c_hsotg_irq(irq, dev); >> + > > Don't you want to release the spinlock and exit the function here if in > device mode? Otherwise it continues on and does a bunch of checks for > things that should only happen in host mode. >
This part handles common interrupts for the core that can happen regardless of what mode it's operating in. Things such as disconnect, connect ID change are handle here. Dinh -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
