diff options
| author | Dave Airlie <airlied@redhat.com> | 2020-03-11 07:27:21 +1000 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2020-03-11 07:27:21 +1000 |
| commit | d3bd37f587b4438d47751d0f1d5aaae3d39bd416 (patch) | |
| tree | 9414a8fd1ca74c47fe1a3966e0a22469ac0b73a3 /drivers/usb/dwc3/gadget.c | |
| parent | 60347451ddb0646c1a9cc5b9581e5bcf648ad1aa (diff) | |
| parent | 2c523b344dfa65a3738e7039832044aa133c75fb (diff) | |
| download | linux-d3bd37f587b4438d47751d0f1d5aaae3d39bd416.tar.bz2 | |
Merge v5.6-rc5 into drm-next
Requested my mripard for some misc patches that need this as a base.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1b8014ab0b25..1e00bf2d65a2 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1071,7 +1071,14 @@ static void dwc3_prepare_one_trb_sg(struct dwc3_ep *dep, unsigned int rem = length % maxp; unsigned chain = true; - if (sg_is_last(s)) + /* + * IOMMU driver is coalescing the list of sgs which shares a + * page boundary into one and giving it to USB driver. With + * this the number of sgs mapped is not equal to the number of + * sgs passed. So mark the chain bit to false if it isthe last + * mapped sg. + */ + if (i == remaining - 1) chain = false; if (rem && usb_endpoint_dir_out(dep->endpoint.desc) && !chain) { @@ -2429,7 +2436,8 @@ static int dwc3_gadget_ep_reclaim_completed_trb(struct dwc3_ep *dep, if (event->status & DEPEVT_STATUS_SHORT && !chain) return 1; - if (event->status & DEPEVT_STATUS_IOC) + if ((trb->ctrl & DWC3_TRB_CTRL_IOC) || + (trb->ctrl & DWC3_TRB_CTRL_LST)) return 1; return 0; |