In 'for' loop skipped masked and non-ISOC EPs. Also breaked 'for' loop
after setting SGOUTNAK in DCTL,when one enabled EP was detected.
This will allow to minimize incomplete ISOC OUT interrupt handling.
Signed-off-by: Razmik Karapetyan <raz...@synopsys.com>
---
drivers/usb/dwc2/gadget.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 543ecf1..52f7db9 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -3492,16 +3492,24 @@ static void
dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg)
{
u32 gintsts;
u32 gintmsk;
+ u32 daintmsk;
u32 epctrl;
struct dwc2_hsotg_ep *hs_ep;
int idx;
dev_dbg(hsotg->dev, "%s: GINTSTS_INCOMPL_SOOUT\n", __func__);
+ daintmsk = dwc2_readl(hsotg->regs + DAINTMSK);
+ daintmsk >>= DAINT_OUTEP_SHIFT;
+
for (idx = 1; idx <= hsotg->num_of_eps; idx++) {
hs_ep = hsotg->eps_out[idx];
+ /* Proceed only unmasked ISOC EPs */
+ if (!hs_ep->isochronous || (BIT(idx) & ~daintmsk))
+ continue;
+
epctrl = dwc2_readl(hsotg->regs + DOEPCTL(idx));
- if ((epctrl & DXEPCTL_EPENA) && hs_ep->isochronous &&
+ if ((epctrl & DXEPCTL_EPENA) &&
dwc2_gadget_target_frame_elapsed(hs_ep)) {
/* Unmask GOUTNAKEFF interrupt */
gintmsk = dwc2_readl(hsotg->regs + GINTMSK);
@@ -3509,8 +3517,10 @@ static void
dwc2_gadget_handle_incomplete_isoc_out(struct dwc2_hsotg *hsotg)
dwc2_writel(gintmsk, hsotg->regs + GINTMSK);
gintsts = dwc2_readl(hsotg->regs + GINTSTS);
- if (!(gintsts & GINTSTS_GOUTNAKEFF))
+ if (!(gintsts & GINTSTS_GOUTNAKEFF)) {
__orr32(hsotg->regs + DCTL, DCTL_SGOUTNAK);
+ break;
+ }
}
}
--
2.7.4
--
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
