On 23-10-27, Sascha Hauer wrote:
> On Fri, Oct 27, 2023 at 10:09:43AM +0200, Marco Felsch wrote:
> > On 23-10-27, Sascha Hauer wrote:
> > > On Thu, Oct 26, 2023 at 11:32:10PM +0200, Ahmad Fatoum wrote:
> > > > On 26.10.23 16:43, Marco Felsch wrote:
> > > > > Windows hosts do require the serial number to be set to any ascii
> > > > > string
> > > > > to enumerate correctly. Set the serial number if provided or to
> > > > > "unset"
> > > > > if not to provide a sane default which works for both hosts.
> > > > >
> > > > > Reported-by: Andrey Zhizhikin <andrey.zhizhi...@leica-geosystems.com>
> > > > > Signed-off-by: Marco Felsch <m.fel...@pengutronix.de>
> > > >
> > > > Reviewed-by: Ahmad Fatoum <a.fat...@pengutronix.de>
> > > >
> > > > > ---
> > > > > Changelog
> > > > >
> > > > > v2:
> > > > > - adapt commit message
> > > > > - use barebox_get_serial_number() and "unset"
> > > > >
> > > > > drivers/usb/gadget/udc/core.c | 2 +-
> > > > > 1 file changed, 1 insertion(+), 1 deletion(-)
> > > > >
> > > > > diff --git a/drivers/usb/gadget/udc/core.c
> > > > > b/drivers/usb/gadget/udc/core.c
> > > > > index b58498680ad1..e7cfa0d5d836 100644
> > > > > --- a/drivers/usb/gadget/udc/core.c
> > > > > +++ b/drivers/usb/gadget/udc/core.c
> > > > > @@ -1204,7 +1204,7 @@ int usb_add_gadget(struct usb_gadget *gadget)
> > > > > gadget->productname = xstrdup(barebox_get_model());
> > > > > dev_add_param_string(&gadget->dev, "productname", NULL, NULL,
> > > > > &gadget->productname, NULL);
> > > > > - gadget->serialnumber = xstrdup("");
> > > > > + gadget->serialnumber = xstrdup(barebox_get_serial_number() ? :
> > > > > "unset");
> > > >
> > > > Nitpick: xstrdup(NULL) == NULL, so the ternary could be moved out the
> > > > xstrdup.
> > >
> > > gadget->serialnumber is freed when the value of the variable is changed,
> > > so it must be an allocated string. gadget->serialnumber = "unset" would
> > > be wrong.
> >
> > I would have done the following:
> >
> > xstrdup(barebox_get_serial_number()) ? : xstrdup("unset");
>
> Your original code looked better. This one looks like the ?: handles
> failures in xstrdup().
Right, thanks for the input.
Regards,
Marco
