diff options
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 87d0cfb7b29e..889dbabc7c2d 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -982,12 +982,28 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->hird_threshold = hird_threshold | (dwc->is_utmi_l1_suspend << 4); + dwc->imod_interval = 0; +} + +/* check whether the core supports IMOD */ +bool dwc3_has_imod(struct dwc3 *dwc) +{ + return ((dwc3_is_usb3(dwc) && + dwc->revision >= DWC3_REVISION_300A) || + (dwc3_is_usb31(dwc) && + dwc->revision >= DWC3_USB31_REVISION_120A)); } static void dwc3_check_params(struct dwc3 *dwc) { struct device *dev = dwc->dev; + /* Check for proper value of imod_interval */ + if (dwc->imod_interval && !dwc3_has_imod(dwc)) { + dev_warn(dwc->dev, "Interrupt moderation not supported\n"); + dwc->imod_interval = 0; + } + /* Check the maximum_speed parameter */ switch (dwc->maximum_speed) { case USB_SPEED_LOW: |