hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

usb: dwc3: gadget: Fix starting microframe for ISOC 

The gadget wants to set the starting microframe for the first ISOC TRB
to 4 microframes in the future, but it does so by multiplying the
dep->interval. This only works if dep->interval = 1. For other intervals
it will put it 4 *intervals* in the future which may be way too much.

Fix so that it always adds just one interval or at least 4 microframes.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
John Youn 2017-01-26 11:58:40 -08:00 committed by Felipe Balbi
parent 3a932b0f50
commit af771d731b
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/dwc3/gadget.c
View File

@ -1184,8 +1184,11 @@ static void __dwc3_gadget_start_isoc(struct dwc3 *dwc,
return;
}
/* 4 micro frames in the future */
uf = cur_uf + dep->interval * 4;
/*
* Schedule the first trb for one interval in the future or at
* least 4 microframes.
*/
uf = cur_uf + max_t(u32, 4, dep->interval);
__dwc3_gadget_kick_transfer(dep, uf);
}