mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-08-24 09:50:04 +00:00
Code Issues Releases Wiki Activity

usb: dwc3: gadget: CSP is only valid for OUT endpoints

Browse source 
CSP bit is only valid for OUT endpoints. Synopsys
databook is unclear if HW ignores CSP for IN
endpoints (chances are, it does) but to avoid
problems, let's make sure to set CSP only when valid
to do so.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2016-10-06 17:10:39 +03:00
parent b9bd138e06
commit 58f29034b4
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/usb/dwc3/gadget.c
View file

@ -875,7 +875,8 @@ static void dwc3_prepare_one_trb(struct dwc3_ep *dep,
}
/* always enable Continue on Short Packet */
trb->ctrl |= DWC3_TRB_CTRL_CSP;
if (usb_endpoint_dir_out(dep->endpoint.desc))
trb->ctrl |= DWC3_TRB_CTRL_CSP;
if ((!req->request.no_interrupt && !chain) ||
(dwc3_calc_trbs_left(dep) == 0))