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UPSTREAM: usb: dwc3: gadget: Fix dep->interval for fullspeed interrupt

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The dep->interval captures the number of frames/microframes per interval
from bInterval. Fullspeed interrupt endpoint bInterval is the number of
frames per interval and not 2^(bInterval - 1). So fix it here. This
change is only for debugging purpose and should not affect the interrupt
endpoint operation.

Fixes: 72246da40f ("usb: Introduce DesignWare USB3 DRD Driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/1263b563dedc4ab8b0fb854fba06ce4bc56bd495.1612820995.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 4b049f55ed
 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-next)
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If88bae978a3e4b5684b4726f3b9962c882c2e9d9
This commit is contained in:
Thinh Nguyen
2021-02-08 13:53:16 -08:00
committed by Greg Kroah-Hartman
parent 9fe5067163
commit f81406ce8e
1 changed files with 6 additions and 1 deletions
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7
drivers/usb/dwc3/gadget.c
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@@ -615,8 +615,13 @@ static int dwc3_gadget_set_ep_config(struct dwc3_ep *dep, unsigned int action)
if (dwc->gadget->speed == USB_SPEED_FULL)
bInterval_m1 = 0;
if (usb_endpoint_type(desc) == USB_ENDPOINT_XFER_INT &&
dwc->gadget->speed == USB_SPEED_FULL)
dep->interval = desc->bInterval;
else
dep->interval = 1 << (desc->bInterval - 1);
params.param1 |= DWC3_DEPCFG_BINTERVAL_M1(bInterval_m1);
dep->interval = 1 << (desc->bInterval - 1);
}
return dwc3_send_gadget_ep_cmd(dep, DWC3_DEPCMD_SETEPCONFIG, &params);