On Tue, Jan 26, 2021 at 6:01 PM Greg KH [off-list ref] wrote:

On Tue, Jan 26, 2021 at 05:49:13PM +0800, Ray Chi wrote:

quoted

Currently, role init functions are used in dwc3 driver but
can't be called from kernel modules.
  dwc3_host_init
  dwc3_host_exit
  dwc3_gadget_init
  dwc3_gadget_exit
  dwc3_event_buffers_setup
  dwc3_event_buffers_cleanup

If other kernel modules want to use these functions, it needs
EXPORT_SYMBOL_GPL() to get compile pass.

Signed-off-by: Ray Chi <redacted>

What current kernel configuration fails without this patch applied?  I
don't see any in-tree users of this as a module that would break, or am
I missing something?

thanks,

greg k-h

There is no failure for current status. This patch is just used for
any kernel modules
which want to call these functions. I think it is an expandability of
dwc3 core driver.