forked from Minki/linux
d9140a0da4
This commit fixes the issue that USB-DMAC hangs silently after system
resumes on R-Car Gen3 hence renesas_usbhs will not work correctly
when using USB-DMAC for bulk transfer e.g. ethernet or serial
gadgets.
The issue can be reproduced by these steps:
1. modprobe g_serial
2. Suspend and resume system.
3. connect a usb cable to host side
4. Transfer data from Host to Target
5. cat /dev/ttyGS0 (Target side)
6. echo "test" > /dev/ttyACM0 (Host side)
The 'cat' will not result anything. However, system still can work
normally.
Currently, USB-DMAC driver does not have system sleep callbacks hence
this driver relies on the PM core to force runtime suspend/resume to
suspend and reinitialize USB-DMAC during system resume. After
the commit
|
||
---|---|---|
.. | ||
Kconfig | ||
Makefile | ||
rcar-dmac.c | ||
shdma-arm.h | ||
shdma-base.c | ||
shdma-of.c | ||
shdma.h | ||
shdmac.c | ||
sudmac.c | ||
usb-dmac.c |