diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2017-09-25 08:01:23 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-10-12 09:51:15 (GMT) |
| commit | 25533678e58068487ffaa1b21b392cbfbc07bde5 (patch) | |
| tree | fd95257f3bcded02ab6a291e0ecbdc57988737ef /drivers/usb | |
| parent | 744f9e1da2a59881e9e5bdc5e264c47b69f56ed5 (diff) | |
| download | linux-25533678e58068487ffaa1b21b392cbfbc07bde5.tar.xz | |
usb: gadget: udc: renesas_usb3: fix for no-data control transfer
commit 4dcf4bab4a409e81284b8202137e4a85b96b34de upstream.
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")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -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 d2cfefa..27499ff 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -991,7 +991,8 @@ 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); |