From 1b4977c793d3d9818ff04df1a09f3c60166626fa Mon Sep 17 00:00:00 2001 From: Razmik Karapetyan Date: Fri, 19 Jan 2018 14:40:49 +0400 Subject: [PATCH] usb: dwc2: Update dwc2_handle_incomplete_isoc_in() function Disabled only that ISOC endpoints,for which interrupt bit was set in the DAINTMSK register. This will allow to minimize incomplete ISOC IN interrupt handling. Acked-by: John Youn Signed-off-by: Razmik Karapetyan Signed-off-by: Minas Harutyunyan Signed-off-by: Grigor Tovmasyan Signed-off-by: Felipe Balbi --- drivers/usb/dwc2/gadget.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 3cc1e3747b7d..8e42537847d4 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -3412,14 +3412,21 @@ static void dwc2_gadget_handle_incomplete_isoc_in(struct dwc2_hsotg *hsotg) { struct dwc2_hsotg_ep *hs_ep; u32 epctrl; + u32 daintmsk; u32 idx; dev_dbg(hsotg->dev, "Incomplete isoc in interrupt received:\n"); + daintmsk = dwc2_readl(hsotg->regs + DAINTMSK); + for (idx = 1; idx <= hsotg->num_of_eps; idx++) { hs_ep = hsotg->eps_in[idx]; + /* Proceed only unmasked ISOC EPs */ + if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk)) + continue; + epctrl = dwc2_readl(hsotg->regs + DIEPCTL(idx)); - if ((epctrl & DXEPCTL_EPENA) && hs_ep->isochronous && + if ((epctrl & DXEPCTL_EPENA) && dwc2_gadget_target_frame_elapsed(hs_ep)) { epctrl |= DXEPCTL_SNAK; epctrl |= DXEPCTL_EPDIS; -- 2.30.2