Re: [PATCH v2] usbip: convert to use faux_device

[Greg KH <gregkh@linuxfoundation.org>]

On Wed, Jun 04, 2025 at 02:54:10PM +0800, Zongmin Zhou wrote:
> From: Zongmin Zhou <zhouzongmin@kylinos.cn>
> 
> The vhci driver does not need to create a platform device,
> it only did so because it was simple to do that in order to
> get a place in sysfs to hang some device-specific attributes.
> Now the faux device interface is more appropriate,change it
> over to use the faux bus instead.
> 
> Signed-off-by: Zongmin Zhou <zhouzongmin@kylinos.cn>
> ---
> Changes in v2:
> - don't change faux create api,just call probe on vhci_hcd_init.
> 
>  drivers/usb/usbip/vhci.h             |  4 +-
>  drivers/usb/usbip/vhci_hcd.c         | 86 +++++++++++-----------------
>  drivers/usb/usbip/vhci_sysfs.c       | 68 +++++++++++-----------
>  tools/usb/usbip/libsrc/vhci_driver.h |  2 +-
>  4 files changed, 72 insertions(+), 88 deletions(-)

I get the following build errors from this patch:

drivers/usb/usbip/vhci_hcd.c:1462:12: error: ‘vhci_hcd_resume’ defined but not used [-Werror=unused-function]
 1462 | static int vhci_hcd_resume(struct faux_device *fdev)
      |            ^~~~~~~~~~~~~~~
drivers/usb/usbip/vhci_hcd.c:1418:12: error: ‘vhci_hcd_suspend’ defined but not used [-Werror=unused-function]
 1418 | static int vhci_hcd_suspend(struct faux_device *fdev, pm_message_t state)
      |            ^~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors

Are you sure you tested this?

thanks,

greg k-h