On Fri, 04 Jan 2013 17:29:11 +0900 Jingoo Han <jg1....@samsung.com> wrote:
> NULL deference of name is checked when device is registered. > If the name is null, it will cause a kernel oops in dev_set_name(). > > ... > > --- a/drivers/video/backlight/backlight.c > +++ b/drivers/video/backlight/backlight.c > @@ -292,6 +292,11 @@ struct backlight_device *backlight_device_register(const > char *name, > struct backlight_device *new_bd; > int rc; > > + if (name == NULL) { > + pr_err("backlight name is null\n"); > + return ERR_PTR(-EINVAL); > + } > + > pr_debug("backlight_device_register: name=%s\n", name); I don't understand this. Is there some driver which is calling these functions with name=NULL? If so, which one(s)? If "no" then why don't we declare that "passing name=NULL is a bug" and leave the code as-is? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/