diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2017-09-25 17:01:23 +0900 |
|---|---|---|
| committer | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-09-28 12:31:26 +0300 |
| commit | 4dcf4bab4a409e81284b8202137e4a85b96b34de (patch) | |
| tree | 82a7003e407085ddbd194eebb19bd6dd05b03cbb /drivers/usb/gadget/udc/renesas_usb3.c | |
| parent | 7dbd8f4cabd96db5a50513de9d83a8105a5ffc81 (diff) | |
| download | linux-4dcf4bab4a409e81284b8202137e4a85b96b34de.tar.bz2 | |
usb: gadget: udc: renesas_usb3: fix for no-data control transfer
When bRequestType & USB_DIR_IN is false and req.length is 0 in control
transfer, since it means non-data, this driver should not set the mode
as control write. So, this patch fixes it.
Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Cc: <stable@vger.kernel.org> # v4.5+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Diffstat (limited to 'drivers/usb/gadget/udc/renesas_usb3.c')
| -rw-r--r-- | drivers/usb/gadget/udc/renesas_usb3.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index df37c1e6e9d5..555c105e82df 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -1150,7 +1150,8 @@ static void usb3_start_pipe0(struct renesas_usb3_ep *usb3_ep, usb3_set_p0_con_for_ctrl_read_data(usb3); } else { usb3_clear_bit(usb3, P0_MOD_DIR, USB3_P0_MOD); - usb3_set_p0_con_for_ctrl_write_data(usb3); + if (usb3_req->req.length) + usb3_set_p0_con_for_ctrl_write_data(usb3); } usb3_p0_xfer(usb3_ep, usb3_req); |