Hi,
On 11/13/2015 06:57 PM, Greg KH wrote:
On Fri, Nov 13, 2015 at 03:45:24PM -0600, Bin Liu wrote:
Change the permission of usb_dma parameter so it can be used for runtime
debug without reboot.
Why would you want to do that? This is only used at init time, so if
you change it while the driver is running, I don't think you will
actually affect anything.
During debug, I want to run with CPPI enabled or disabled without reboot
the board to load different kernel image.
With this patch, I can archive this by
- unbind musb_hdrc
- change usb_dma param
- bind musb_hdrc
Have you tested this out?
Yes, I did and it works for me.
Regards,
-Bin.
thanks,
greg k-h
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