Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-21 07:23:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

usb: dwc3: gadget: Skip waiting for CMDACT cleared during endxfer

Browse Source 
For endxfer commands that do not require an endpoint complete interrupt,
avoid having to wait for the command active bit to clear.  This allows for
EP0 events to continue to be handled, which allows for the controller to
complete it.  Otherwise, it is known that the endxfer command will fail if
there is a pending SETUP token that needs to be read.

Suggested-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Reviewed-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Wesley Cheng <quic_wcheng@quicinc.com>
Link: https://lore.kernel.org/r/20220901193625.8727-5-quic_wcheng@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wesley Cheng 2022-09-01 12:36:24 -07:00 committed by Greg Kroah-Hartman
parent 461ee46750
commit b353eb6dc2
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/dwc3/gadget.c
View File

@ -366,7 +366,9 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned int cmd,
dwc3_writel(dep->regs, DWC3_DEPCMD, cmd);
if (!(cmd & DWC3_DEPCMD_CMDACT)) {
if (!(cmd & DWC3_DEPCMD_CMDACT) ||
(DWC3_DEPCMD_CMD(cmd) == DWC3_DEPCMD_ENDTRANSFER &&
!(cmd & DWC3_DEPCMD_CMDIOC))) {
ret = 0;
goto skip_status;
}