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Date: Mon, 16 Nov 2015 16:51:24 -0800 From: Douglas Anderson <dianders@...omium.org> To: John Youn <John.Youn@...opsys.com>, balbi@...com Cc: Yunzhi Li <lyz@...k-chips.com>, Heiko Stübner <heiko@...ech.de>, linux-rockchip@...ts.infradead.org, Julius Werner <jwerner@...omium.org>, gregory.herrero@...el.com, yousaf.kaukab@...el.com, dinguyen@...nsource.altera.com, stern@...land.harvard.edu, ming.lei@...onical.com, Douglas Anderson <dianders@...omium.org>, johnyoun@...opsys.com, gregkh@...uxfoundation.org, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: [PATCH v3 8/8] usb: dwc2: host: Giveback URB in tasklet context In commit 94dfd7edfd5c ("USB: HCD: support giveback of URB in tasklet context") support was added to give back the URB in tasklet context. Let's take advantage of this in dwc2. This speeds up the dwc2 interrupt handler considerably. Note that this requires the change ("usb: dwc2: host: Add a delay before releasing periodic bandwidth") to come first. Signed-off-by: Douglas Anderson <dianders@...omium.org> Tested-by: Heiko Stuebner <heiko@...ech.de> --- Changes in v3: None Changes in v2: - Commit message now says that URB giveback change needs delay change. drivers/usb/dwc2/hcd.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index 803992985935..5fc86aad542e 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -2266,9 +2266,7 @@ void dwc2_host_complete(struct dwc2_hsotg *hsotg, struct dwc2_qtd *qtd, kfree(qtd->urb); qtd->urb = NULL; - spin_unlock(&hsotg->lock); usb_hcd_giveback_urb(dwc2_hsotg_to_hcd(hsotg), urb, status); - spin_lock(&hsotg->lock); } /* @@ -2881,7 +2879,7 @@ static struct hc_driver dwc2_hc_driver = { .hcd_priv_size = sizeof(struct wrapper_priv_data), .irq = _dwc2_hcd_irq, - .flags = HCD_MEMORY | HCD_USB2, + .flags = HCD_MEMORY | HCD_USB2 | HCD_BH, .start = _dwc2_hcd_start, .stop = _dwc2_hcd_stop, -- 2.6.0.rc2.230.g3dd15c0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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