Re: [PATCH v2 12/13] usb: gadget: udc: gr_udc: create debugfs directory under usb root

[Chunfeng Yun]

On Thu, 2019-11-14 at 11:21 +0800, Greg Kroah-Hartman wrote:
> On Tue, Nov 12, 2019 at 02:51:58PM +0800, Chunfeng Yun wrote:
> > Now the USB gadget subsystem can use the USB debugfs root directory,
> > so move it's directory from the root of the debugfs filesystem into
> > the root of usb
> > 
> > Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
> > ---
> > v2:
> >   1. abandon new API usb_debugfs_create_dir(), and use usb_debug_root
> > ---
> >  drivers/usb/gadget/udc/gr_udc.c | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/usb/gadget/udc/gr_udc.c b/drivers/usb/gadget/udc/gr_udc.c
> > index 7a0e9a58c2d8..5faa09a6c770 100644
> > --- a/drivers/usb/gadget/udc/gr_udc.c
> > +++ b/drivers/usb/gadget/udc/gr_udc.c
> > @@ -208,7 +208,7 @@ static void gr_dfs_create(struct gr_udc *dev)
> >  {
> >  	const char *name = "gr_udc_state";
> >  
> > -	dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), NULL);
> > +	dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), usb_debug_root);
> >  	debugfs_create_file(name, 0444, dev->dfs_root, dev, &gr_dfs_fops);
> >  }
> >  
> 
> This breaks the build:
> drivers/usb/gadget/udc/gr_udc.c: In function âgr_dfs_createâ:
> drivers/usb/gadget/udc/gr_udc.c:211:57: error: âusb_debug_rootâ undeclared (first use in this function)
>   211 |  dev->dfs_root = debugfs_create_dir(dev_name(dev->dev), usb_debug_root);
>       |                                                         ^~~~~~~~~~~~~~
> drivers/usb/gadget/udc/gr_udc.c:211:57: note: each undeclared identifier is reported only once for each function it appears in
> make[4]: *** [scripts/Makefile.build:265: drivers/usb/gadget/udc/gr_udc.o] Error 1
> 
> so I've dropped it from the patch series.
> 
> Please fix up and resend.
Ok
> 
> And of course, always test-build your patches before you send them
> out...
Sorry, will do it
> 
> greg k-h