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usb: dwc_otg_310: hcd: Giveback URB in tasklet context

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In commit 94dfd7edfd ("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 dwc_otg_310.

This speeds up the dwc_otg_310 interrupt handler considerably, it means
we've got a better chance of not missing SOF interrupts.

TEST=Unable to preview yuyv format usb camera on rk3288 board when use
dwc usb controller because of missing SOF interrupts.

Change-Id: I52194d7fbddaf684c601d328e2a3c0f28fcb83b8
Signed-off-by: Feng Mingli <fml@rock-chips.com>
This commit is contained in:
Feng Mingli 2018-01-30 17:14:22 +08:00 committed by Tao Huang
parent 109121e68d
commit cdfac2ac67
1 changed files with 1 additions and 3 deletions
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4
drivers/usb/dwc_otg_310/dwc_otg_hcd_linux.c
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@ -115,7 +115,7 @@ static struct hc_driver dwc_otg_hc_driver = {
.irq = dwc_otg_hcd_irq,
.flags = HCD_MEMORY | HCD_USB2,
.flags = HCD_MEMORY | HCD_USB2 | HCD_BH,
/* .reset = */
.start = hcd_start,
@ -330,13 +330,11 @@ static int _complete(dwc_otg_hcd_t *hcd, void *urb_handle,
usb_hcd_unlink_urb_from_ep(dwc_otg_hcd_to_hcd(hcd), urb);
DWC_SPINUNLOCK(hcd->lock);
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 28)
usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb);
#else
usb_hcd_giveback_urb(dwc_otg_hcd_to_hcd(hcd), urb, status);
#endif
DWC_SPINLOCK(hcd->lock);
return 0;
}