diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2015-08-31 19:48:28 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2015-10-12 21:36:13 +0300 |
| commit | d115d7050a0d2c4967532f18c9cb522fea6b7280 (patch) | |
| tree | d86dd422ab49f5d9bef239e47d36ef9e637b2e6e /drivers/usb/dwc3 | |
| parent | e5f68b4a3e7b006f209aba078d6a5ff3a78dd783 (diff) | |
| download | linux-d115d7050a0d2c4967532f18c9cb522fea6b7280.tar.xz | |
Revert "usb: dwc3: gadget: drop unnecessary loop when cleaning up TRBs"
This reverts commit 8f2c9544aba636134303105ecb164190a39dece4.
As it breaks g_ether on my Baytrail FFRD8 device. Everything starts out
fine, but after a bit of data has been transferred it just stops
flowing.
Note that I do get a bunch of these "NOHZ: local_softirq_pending 08"
when booting the machine, but I'm not really sure if they're related
to this problem.
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-usb@vger.kernel.org
Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 37 |
1 files changed, 21 insertions, 16 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 81bfb9ad1e2e..55ba447fdf8b 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1884,27 +1884,32 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, unsigned int i; int ret; - req = next_request(&dep->req_queued); - if (!req) { - WARN_ON_ONCE(1); - return 1; - } - i = 0; do { - slot = req->start_slot + i; - if ((slot == DWC3_TRB_NUM - 1) && + req = next_request(&dep->req_queued); + if (!req) { + WARN_ON_ONCE(1); + return 1; + } + i = 0; + do { + slot = req->start_slot + i; + if ((slot == DWC3_TRB_NUM - 1) && usb_endpoint_xfer_isoc(dep->endpoint.desc)) - slot++; - slot %= DWC3_TRB_NUM; - trb = &dep->trb_pool[slot]; + slot++; + slot %= DWC3_TRB_NUM; + trb = &dep->trb_pool[slot]; + + ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb, + event, status); + if (ret) + break; + } while (++i < req->request.num_mapped_sgs); + + dwc3_gadget_giveback(dep, req, status); - ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb, - event, status); if (ret) break; - } while (++i < req->request.num_mapped_sgs); - - dwc3_gadget_giveback(dep, req, status); + } while (1); if (usb_endpoint_xfer_isoc(dep->endpoint.desc) && list_empty(&dep->req_queued)) { |