| Message ID | 20191204073456.57616-1-ejh@nvidia.com (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | e5b5da96da50ef30abb39cb9f694e99366404d24 |
| Headers | show |
| Series | [v3] usb: gadget: fix wrong endpoint desc | expand |
Reviewed-by: Peter Chen <peter.chen@nxp.com>
Add a "Reviewed-by" from Peter since this patch has been reviewed in v2 and only typo fix in v3.
Thanks,
EJ
--nvpublic
diff --git a/drivers/usb/gadget/function/f_ecm.c b/drivers/usb/gadget/function/f_ecm.c index 6ce044008cf6..460d5d7c984f 100644 --- a/drivers/usb/gadget/function/f_ecm.c +++ b/drivers/usb/gadget/function/f_ecm.c @@ -621,8 +621,12 @@ static void ecm_disable(struct usb_function *f) DBG(cdev, "ecm deactivated\n"); - if (ecm->port.in_ep->enabled) + if (ecm->port.in_ep->enabled) { gether_disconnect(&ecm->port); + } else { + ecm->port.in_ep->desc = NULL; + ecm->port.out_ep->desc = NULL; + } usb_ep_disable(ecm->notify); ecm->notify->desc = NULL; diff --git a/drivers/usb/gadget/function/f_rndis.c b/drivers/usb/gadget/function/f_rndis.c index d48df36622b7..0d8e4a364ca6 100644 --- a/drivers/usb/gadget/function/f_rndis.c +++ b/drivers/usb/gadget/function/f_rndis.c @@ -618,6 +618,7 @@ static void rndis_disable(struct usb_function *f) gether_disconnect(&rndis->port); usb_ep_disable(rndis->notify); + rndis->notify->desc = NULL; } /*-------------------------------------------------------------------------*/
Gadget driver should always use config_ep_by_speed() to initialize usb_ep struct according to usb device's operating speed. Otherwise, usb_ep struct may be wrong if usb devcie's operating speed is changed. The key point in this patch is that we want to make sure the desc pointer in usb_ep struct will be set to NULL when gadget is disconnected. This will force it to call config_ep_by_speed() to correctly initialize usb_ep struct based on the new operating speed when gadget is re-connected later. Signed-off-by: EJ Hsu <ejh@nvidia.com> --- v2: fix the coding style v3: fix the typo --- drivers/usb/gadget/function/f_ecm.c | 6 +++++- drivers/usb/gadget/function/f_rndis.c | 1 + 2 files changed, 6 insertions(+), 1 deletion(-)