diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2019-07-26 15:05:33 +1000 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2019-08-12 08:54:48 +0300 |
| commit | ef9d34686bae33de38b0198a4c6c1a50daab31d7 (patch) | |
| tree | 11856e25cf8e3755678476cb85463f06dd2bbe28 /drivers/usb/gadget/udc/aspeed-vhub | |
| parent | 7e420cef9047dc945b019dc235ec91c792c30f2d (diff) | |
| download | linux-ef9d34686bae33de38b0198a4c6c1a50daab31d7.tar.bz2 | |
usb: gadget: aspeed: Don't reject requests on suspended devices
A disconnect may just suspend the hub in absence of a physical
disconnect detection. If we start rejecting requests, the mass
storage function gets into a spin trying to requeue the same
request for ever and hangs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget/udc/aspeed-vhub')
| -rw-r--r-- | drivers/usb/gadget/udc/aspeed-vhub/dev.c | 13 | ||||
| -rw-r--r-- | drivers/usb/gadget/udc/aspeed-vhub/ep0.c | 2 | ||||
| -rw-r--r-- | drivers/usb/gadget/udc/aspeed-vhub/epn.c | 2 |
3 files changed, 11 insertions, 6 deletions
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c b/drivers/usb/gadget/udc/aspeed-vhub/dev.c index 678bbdbd0971..71e2416858fd 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c @@ -204,14 +204,19 @@ int ast_vhub_std_dev_request(struct ast_vhub_ep *ep, u16 wValue, wIndex; /* No driver, we shouldn't be enabled ... */ - if (!d->driver || !d->enabled || d->suspended) { + if (!d->driver || !d->enabled) { EPDBG(ep, - "Device is wrong state driver=%p enabled=%d" - " suspended=%d\n", - d->driver, d->enabled, d->suspended); + "Device is wrong state driver=%p enabled=%d\n", + d->driver, d->enabled); return std_req_stall; } + /* + * Note: we used to reject/stall requests while suspended, + * we don't do that anymore as we seem to have cases of + * mass storage getting very upset. + */ + /* First packet, grab speed */ if (d->gadget.speed == USB_SPEED_UNKNOWN) { d->gadget.speed = ep->vhub->speed; diff --git a/drivers/usb/gadget/udc/aspeed-vhub/ep0.c b/drivers/usb/gadget/udc/aspeed-vhub/ep0.c index b64dca7933b0..022b777b85f8 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/ep0.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/ep0.c @@ -379,7 +379,7 @@ static int ast_vhub_ep0_queue(struct usb_ep* u_ep, struct usb_request *u_req, return -EINVAL; /* Disabled device */ - if (ep->dev && (!ep->dev->enabled || ep->dev->suspended)) + if (ep->dev && !ep->dev->enabled) return -ESHUTDOWN; /* Data, no buffer and not internal ? */ diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c b/drivers/usb/gadget/udc/aspeed-vhub/epn.c index 35941dc125f9..7475c74aa5c5 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c @@ -352,7 +352,7 @@ static int ast_vhub_epn_queue(struct usb_ep* u_ep, struct usb_request *u_req, /* Endpoint enabled ? */ if (!ep->epn.enabled || !u_ep->desc || !ep->dev || !ep->d_idx || - !ep->dev->enabled || ep->dev->suspended) { + !ep->dev->enabled) { EPDBG(ep, "Enqueuing request on wrong or disabled EP\n"); return -ESHUTDOWN; } |