From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Kroah-Hartman Subject: Re: [PATCH 1/2] serdev: do not generate modaliases for controllers Date: Tue, 9 Jan 2018 16:48:03 +0100 Message-ID: <20180109154803.GA10213@kroah.com> References: <20180108124233.26729-1-johan@kernel.org> <20180108124233.26729-2-johan@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180108124233.26729-2-johan@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Johan Hovold Cc: Rob Herring , Jiri Slaby , linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, =?iso-8859-1?Q?Fr=E9d=E9ric?= Danis List-Id: linux-serial@vger.kernel.org On Mon, Jan 08, 2018 at 01:42:32PM +0100, Johan Hovold wrote: > Serdev controllers are not bound to any drivers and it therefore makes > no sense to generate modaliases for them. > > This has already been fixed separately for ACPI controllers for which > uevent errors were also being logged during probe due to the missing > ACPI companions (from which ACPI modaliases are generated). > > This patch moves the modalias handling from the bus type to the client > device type. Specifically, this means that only serdev devices (a.k.a. > clients or slaves) will have have MODALIAS fields in their uevent > environments and corresponding modalias sysfs attributes. > > Reported-by: Hans de Goede > Signed-off-by: Johan Hovold > --- > drivers/tty/serdev/core.c | 72 ++++++++++++++++++++++------------------------- > 1 file changed, 34 insertions(+), 38 deletions(-) > > diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c > index 5dc88f61f506..61c85e49e178 100644 > --- a/drivers/tty/serdev/core.c > +++ b/drivers/tty/serdev/core.c > @@ -19,6 +19,38 @@ > static bool is_registered; > static DEFINE_IDA(ctrl_ida); > > +static ssize_t modalias_show(struct device *dev, > + struct device_attribute *attr, char *buf) > +{ > + int len; > + > + len = acpi_device_modalias(dev, buf, PAGE_SIZE - 1); > + if (len != -ENODEV) > + return len; > + > + return of_device_modalias(dev, buf, PAGE_SIZE); > +} > +DEVICE_ATTR_RO(modalias); static? Sorry, minor nit :(