| Message ID | 20210407063629.43685-1-pawell@gli-login.cadence.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] usb: cdnsp: Fixes issue with Configure Endpoint command | expand |
On 21-04-07 08:36:29, Pawel Laszczak wrote: > From: Pawel Laszczak <pawell@cadence.com> > > Patch adds flag EP_UNCONFIGURED to detect whether endpoint was > unconfigured. This flag is set in cdnsp_reset_device after Reset Device > command. Among others this command disables all non control endpoints. > Flag is used in cdnsp_gadget_ep_disable to protect controller against > invoking Configure Endpoint command on disabled endpoint. Lack of this > protection in some cases caused that Configure Endpoint command completed > with Context State Error code completion. > > Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") > Signed-off-by: Pawel Laszczak <pawell@cadence.com> Pawel, it is a little later for v5.12. I queue it to v5.13-rc1 if you don't mind. Peter > > --- > Changelog: > v2: > - removed useless blank line > - changed the EP_UNCONFIGURED to limit changes in patch > > drivers/usb/cdns3/cdnsp-gadget.c | 17 ++++++++++++----- > drivers/usb/cdns3/cdnsp-gadget.h | 1 + > 2 files changed, 13 insertions(+), 5 deletions(-) > > diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c > index d7d4bdd57f46..56707b6b0f57 100644 > --- a/drivers/usb/cdns3/cdnsp-gadget.c > +++ b/drivers/usb/cdns3/cdnsp-gadget.c > @@ -727,7 +727,7 @@ int cdnsp_reset_device(struct cdnsp_device *pdev) > * are in Disabled state. > */ > for (i = 1; i < CDNSP_ENDPOINTS_NUM; ++i) > - pdev->eps[i].ep_state |= EP_STOPPED; > + pdev->eps[i].ep_state |= EP_STOPPED | EP_UNCONFIGURED; > > trace_cdnsp_handle_cmd_reset_dev(slot_ctx); > > @@ -942,6 +942,7 @@ static int cdnsp_gadget_ep_enable(struct usb_ep *ep, > > pep = to_cdnsp_ep(ep); > pdev = pep->pdev; > + pep->ep_state &= ~EP_UNCONFIGURED; > > if (dev_WARN_ONCE(pdev->dev, pep->ep_state & EP_ENABLED, > "%s is already enabled\n", pep->name)) > @@ -1023,9 +1024,13 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) > goto finish; > } > > - cdnsp_cmd_stop_ep(pdev, pep); > pep->ep_state |= EP_DIS_IN_RROGRESS; > - cdnsp_cmd_flush_ep(pdev, pep); > + > + /* Endpoint was unconfigured by Reset Device command. */ > + if (!(pep->ep_state & EP_UNCONFIGURED)) { > + cdnsp_cmd_stop_ep(pdev, pep); > + cdnsp_cmd_flush_ep(pdev, pep); > + } > > /* Remove all queued USB requests. */ > while (!list_empty(&pep->pending_list)) { > @@ -1043,10 +1048,12 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) > > cdnsp_endpoint_zero(pdev, pep); > > - ret = cdnsp_update_eps_configuration(pdev, pep); > + if (!(pep->ep_state & EP_UNCONFIGURED)) > + ret = cdnsp_update_eps_configuration(pdev, pep); > + > cdnsp_free_endpoint_rings(pdev, pep); > > - pep->ep_state &= ~EP_ENABLED; > + pep->ep_state &= ~(EP_ENABLED | EP_UNCONFIGURED); > pep->ep_state |= EP_STOPPED; > > finish: > diff --git a/drivers/usb/cdns3/cdnsp-gadget.h b/drivers/usb/cdns3/cdnsp-gadget.h > index 6bbb26548c04..783ca8ffde00 100644 > --- a/drivers/usb/cdns3/cdnsp-gadget.h > +++ b/drivers/usb/cdns3/cdnsp-gadget.h > @@ -835,6 +835,7 @@ struct cdnsp_ep { > #define EP_WEDGE BIT(4) > #define EP0_HALTED_STATUS BIT(5) > #define EP_HAS_STREAMS BIT(6) > +#define EP_UNCONFIGURED BIT(7) > > bool skip; > }; > -- > 2.25.1 > -- Thanks, Peter Chen
On 21-04-07 08:36:29, Pawel Laszczak wrote: > From: Pawel Laszczak <pawell@cadence.com> > > Patch adds flag EP_UNCONFIGURED to detect whether endpoint was > unconfigured. This flag is set in cdnsp_reset_device after Reset Device > command. Among others this command disables all non control endpoints. > Flag is used in cdnsp_gadget_ep_disable to protect controller against > invoking Configure Endpoint command on disabled endpoint. Lack of this > protection in some cases caused that Configure Endpoint command completed > with Context State Error code completion. > > Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") > Signed-off-by: Pawel Laszczak <pawell@cadence.com> Pawel, it is a little late for v5.12, I apply it to v5.13-rc1 if you don't mind. Peter > > --- > Changelog: > v2: > - removed useless blank line > - changed the EP_UNCONFIGURED to limit changes in patch > > drivers/usb/cdns3/cdnsp-gadget.c | 17 ++++++++++++----- > drivers/usb/cdns3/cdnsp-gadget.h | 1 + > 2 files changed, 13 insertions(+), 5 deletions(-) > > diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c > index d7d4bdd57f46..56707b6b0f57 100644 > --- a/drivers/usb/cdns3/cdnsp-gadget.c > +++ b/drivers/usb/cdns3/cdnsp-gadget.c > @@ -727,7 +727,7 @@ int cdnsp_reset_device(struct cdnsp_device *pdev) > * are in Disabled state. > */ > for (i = 1; i < CDNSP_ENDPOINTS_NUM; ++i) > - pdev->eps[i].ep_state |= EP_STOPPED; > + pdev->eps[i].ep_state |= EP_STOPPED | EP_UNCONFIGURED; > > trace_cdnsp_handle_cmd_reset_dev(slot_ctx); > > @@ -942,6 +942,7 @@ static int cdnsp_gadget_ep_enable(struct usb_ep *ep, > > pep = to_cdnsp_ep(ep); > pdev = pep->pdev; > + pep->ep_state &= ~EP_UNCONFIGURED; > > if (dev_WARN_ONCE(pdev->dev, pep->ep_state & EP_ENABLED, > "%s is already enabled\n", pep->name)) > @@ -1023,9 +1024,13 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) > goto finish; > } > > - cdnsp_cmd_stop_ep(pdev, pep); > pep->ep_state |= EP_DIS_IN_RROGRESS; > - cdnsp_cmd_flush_ep(pdev, pep); > + > + /* Endpoint was unconfigured by Reset Device command. */ > + if (!(pep->ep_state & EP_UNCONFIGURED)) { > + cdnsp_cmd_stop_ep(pdev, pep); > + cdnsp_cmd_flush_ep(pdev, pep); > + } > > /* Remove all queued USB requests. */ > while (!list_empty(&pep->pending_list)) { > @@ -1043,10 +1048,12 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) > > cdnsp_endpoint_zero(pdev, pep); > > - ret = cdnsp_update_eps_configuration(pdev, pep); > + if (!(pep->ep_state & EP_UNCONFIGURED)) > + ret = cdnsp_update_eps_configuration(pdev, pep); > + > cdnsp_free_endpoint_rings(pdev, pep); > > - pep->ep_state &= ~EP_ENABLED; > + pep->ep_state &= ~(EP_ENABLED | EP_UNCONFIGURED); > pep->ep_state |= EP_STOPPED; > > finish: > diff --git a/drivers/usb/cdns3/cdnsp-gadget.h b/drivers/usb/cdns3/cdnsp-gadget.h > index 6bbb26548c04..783ca8ffde00 100644 > --- a/drivers/usb/cdns3/cdnsp-gadget.h > +++ b/drivers/usb/cdns3/cdnsp-gadget.h > @@ -835,6 +835,7 @@ struct cdnsp_ep { > #define EP_WEDGE BIT(4) > #define EP0_HALTED_STATUS BIT(5) > #define EP_HAS_STREAMS BIT(6) > +#define EP_UNCONFIGURED BIT(7) > > bool skip; > }; > -- > 2.25.1 > -- Thanks, Peter Chen
> >On 21-04-07 08:36:29, Pawel Laszczak wrote: >> From: Pawel Laszczak <pawell@cadence.com> >> >> Patch adds flag EP_UNCONFIGURED to detect whether endpoint was >> unconfigured. This flag is set in cdnsp_reset_device after Reset Device >> command. Among others this command disables all non control endpoints. >> Flag is used in cdnsp_gadget_ep_disable to protect controller against >> invoking Configure Endpoint command on disabled endpoint. Lack of this >> protection in some cases caused that Configure Endpoint command completed >> with Context State Error code completion. >> >> Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") >> Signed-off-by: Pawel Laszczak <pawell@cadence.com> > >Pawel, it is a little late for v5.12, I apply it to v5.13-rc1 if you >don't mind. > >Peter Yes, you can apply it to v5.13-rc1. Thanks. r >> >> --- >> Changelog: >> v2: >> - removed useless blank line >> - changed the EP_UNCONFIGURED to limit changes in patch >> >> drivers/usb/cdns3/cdnsp-gadget.c | 17 ++++++++++++----- >> drivers/usb/cdns3/cdnsp-gadget.h | 1 + >> 2 files changed, 13 insertions(+), 5 deletions(-) >> >> diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c >> index d7d4bdd57f46..56707b6b0f57 100644 >> --- a/drivers/usb/cdns3/cdnsp-gadget.c >> +++ b/drivers/usb/cdns3/cdnsp-gadget.c >> @@ -727,7 +727,7 @@ int cdnsp_reset_device(struct cdnsp_device *pdev) >> * are in Disabled state. >> */ >> for (i = 1; i < CDNSP_ENDPOINTS_NUM; ++i) >> - pdev->eps[i].ep_state |= EP_STOPPED; >> + pdev->eps[i].ep_state |= EP_STOPPED | EP_UNCONFIGURED; >> >> trace_cdnsp_handle_cmd_reset_dev(slot_ctx); >> >> @@ -942,6 +942,7 @@ static int cdnsp_gadget_ep_enable(struct usb_ep *ep, >> >> pep = to_cdnsp_ep(ep); >> pdev = pep->pdev; >> + pep->ep_state &= ~EP_UNCONFIGURED; >> >> if (dev_WARN_ONCE(pdev->dev, pep->ep_state & EP_ENABLED, >> "%s is already enabled\n", pep->name)) >> @@ -1023,9 +1024,13 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) >> goto finish; >> } >> >> - cdnsp_cmd_stop_ep(pdev, pep); >> pep->ep_state |= EP_DIS_IN_RROGRESS; >> - cdnsp_cmd_flush_ep(pdev, pep); >> + >> + /* Endpoint was unconfigured by Reset Device command. */ >> + if (!(pep->ep_state & EP_UNCONFIGURED)) { >> + cdnsp_cmd_stop_ep(pdev, pep); >> + cdnsp_cmd_flush_ep(pdev, pep); >> + } >> >> /* Remove all queued USB requests. */ >> while (!list_empty(&pep->pending_list)) { >> @@ -1043,10 +1048,12 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) >> >> cdnsp_endpoint_zero(pdev, pep); >> >> - ret = cdnsp_update_eps_configuration(pdev, pep); >> + if (!(pep->ep_state & EP_UNCONFIGURED)) >> + ret = cdnsp_update_eps_configuration(pdev, pep); >> + >> cdnsp_free_endpoint_rings(pdev, pep); >> >> - pep->ep_state &= ~EP_ENABLED; >> + pep->ep_state &= ~(EP_ENABLED | EP_UNCONFIGURED); >> pep->ep_state |= EP_STOPPED; >> >> finish: >> diff --git a/drivers/usb/cdns3/cdnsp-gadget.h b/drivers/usb/cdns3/cdnsp-gadget.h >> index 6bbb26548c04..783ca8ffde00 100644 >> --- a/drivers/usb/cdns3/cdnsp-gadget.h >> +++ b/drivers/usb/cdns3/cdnsp-gadget.h >> @@ -835,6 +835,7 @@ struct cdnsp_ep { >> #define EP_WEDGE BIT(4) >> #define EP0_HALTED_STATUS BIT(5) >> #define EP_HAS_STREAMS BIT(6) >> +#define EP_UNCONFIGURED BIT(7) >> >> bool skip; >> }; >> -- >> 2.25.1 >> > >-- > >Thanks, >Peter Chen -- Regards, Pawel Laszczak
diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c index d7d4bdd57f46..56707b6b0f57 100644 --- a/drivers/usb/cdns3/cdnsp-gadget.c +++ b/drivers/usb/cdns3/cdnsp-gadget.c @@ -727,7 +727,7 @@ int cdnsp_reset_device(struct cdnsp_device *pdev) * are in Disabled state. */ for (i = 1; i < CDNSP_ENDPOINTS_NUM; ++i) - pdev->eps[i].ep_state |= EP_STOPPED; + pdev->eps[i].ep_state |= EP_STOPPED | EP_UNCONFIGURED; trace_cdnsp_handle_cmd_reset_dev(slot_ctx); @@ -942,6 +942,7 @@ static int cdnsp_gadget_ep_enable(struct usb_ep *ep, pep = to_cdnsp_ep(ep); pdev = pep->pdev; + pep->ep_state &= ~EP_UNCONFIGURED; if (dev_WARN_ONCE(pdev->dev, pep->ep_state & EP_ENABLED, "%s is already enabled\n", pep->name)) @@ -1023,9 +1024,13 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) goto finish; } - cdnsp_cmd_stop_ep(pdev, pep); pep->ep_state |= EP_DIS_IN_RROGRESS; - cdnsp_cmd_flush_ep(pdev, pep); + + /* Endpoint was unconfigured by Reset Device command. */ + if (!(pep->ep_state & EP_UNCONFIGURED)) { + cdnsp_cmd_stop_ep(pdev, pep); + cdnsp_cmd_flush_ep(pdev, pep); + } /* Remove all queued USB requests. */ while (!list_empty(&pep->pending_list)) { @@ -1043,10 +1048,12 @@ static int cdnsp_gadget_ep_disable(struct usb_ep *ep) cdnsp_endpoint_zero(pdev, pep); - ret = cdnsp_update_eps_configuration(pdev, pep); + if (!(pep->ep_state & EP_UNCONFIGURED)) + ret = cdnsp_update_eps_configuration(pdev, pep); + cdnsp_free_endpoint_rings(pdev, pep); - pep->ep_state &= ~EP_ENABLED; + pep->ep_state &= ~(EP_ENABLED | EP_UNCONFIGURED); pep->ep_state |= EP_STOPPED; finish: diff --git a/drivers/usb/cdns3/cdnsp-gadget.h b/drivers/usb/cdns3/cdnsp-gadget.h index 6bbb26548c04..783ca8ffde00 100644 --- a/drivers/usb/cdns3/cdnsp-gadget.h +++ b/drivers/usb/cdns3/cdnsp-gadget.h @@ -835,6 +835,7 @@ struct cdnsp_ep { #define EP_WEDGE BIT(4) #define EP0_HALTED_STATUS BIT(5) #define EP_HAS_STREAMS BIT(6) +#define EP_UNCONFIGURED BIT(7) bool skip; };