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Open Source and information security mailing list archives
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Date: Wed, 7 Jul 2021 16:24:38 +0200
From: Benjamin Tissoires <benjamin.tissoires@...hat.com>
To: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: kernel@...gutronix.de, Cornelia Huck <cohuck@...hat.com>,
linux-kernel@...r.kernel.org, Russell King <linux@...linux.org.uk>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
"James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
Helge Deller <deller@....de>,
Geoff Levand <geoff@...radead.org>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
"Rafael J. Wysocki" <rjw@...ysocki.net>,
Len Brown <lenb@...nel.org>,
William Breathitt Gray <vilhelm.gray@...il.com>,
Rafał Miłecki <zajec5@...il.com>,
Maxime Ripard <mripard@...nel.org>,
Chen-Yu Tsai <wens@...e.org>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Alison Schofield <alison.schofield@...el.com>,
Vishal Verma <vishal.l.verma@...el.com>,
Ira Weiny <ira.weiny@...el.com>,
Ben Widawsky <ben.widawsky@...el.com>,
Dan Williams <dan.j.williams@...el.com>,
Dave Jiang <dave.jiang@...el.com>,
Vinod Koul <vkoul@...nel.org>,
Stefan Richter <stefanr@...6.in-berlin.de>,
Sudeep Holla <sudeep.holla@....com>,
Cristian Marussi <cristian.marussi@....com>,
Wu Hao <hao.wu@...el.com>, Tom Rix <trix@...hat.com>,
Moritz Fischer <mdf@...nel.org>,
Jiri Kosina <jikos@...nel.org>,
Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
"K. Y. Srinivasan" <kys@...rosoft.com>,
Haiyang Zhang <haiyangz@...rosoft.com>,
Stephen Hemminger <sthemmin@...rosoft.com>,
Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Wolfram Sang <wsa@...nel.org>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Dmitry Torokhov <dmitry.torokhov@...il.com>,
Samuel Iglesias Gonsalvez <siglesias@...lia.com>,
Jens Taprogge <jens.taprogge@...rogge.org>,
Johannes Thumshirn <morbidrsa@...il.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Maxim Levitsky <maximlevitsky@...il.com>,
Alex Dubov <oakad@...oo.com>,
Ulf Hansson <ulf.hansson@...aro.org>,
Lee Jones <lee.jones@...aro.org>,
Tomas Winkler <tomas.winkler@...el.com>,
Arnd Bergmann <arnd@...db.de>,
Jakub Kicinski <kuba@...nel.org>,
"David S. Miller" <davem@...emloft.net>,
Jon Mason <jdmason@...zu.us>, Allen Hubbe <allenbh@...il.com>,
Kishon Vijay Abraham I <kishon@...com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Krzysztof Wilczyński <kw@...ux.com>,
Bjorn Helgaas <bhelgaas@...gle.com>,
Dominik Brodowski <linux@...inikbrodowski.net>,
Maximilian Luz <luzmaximilian@...il.com>,
Hans de Goede <hdegoede@...hat.com>,
Mark Gross <mgross@...ux.intel.com>,
Matt Porter <mporter@...nel.crashing.org>,
Alexandre Bounine <alex.bou9@...il.com>,
Ohad Ben-Cohen <ohad@...ery.com>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Thorsten Scherer <t.scherer@...elmann.de>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
Andy Gross <agross@...nel.org>,
Mark Brown <broonie@...nel.org>,
Stephen Boyd <sboyd@...nel.org>, Michael Buesch <m@...s.ch>,
Sven Van Asbroeck <TheSven73@...il.com>,
Johan Hovold <johan@...nel.org>, Alex Elder <elder@...nel.org>,
Andreas Noever <andreas.noever@...il.com>,
Michael Jamet <michael.jamet@...el.com>,
Mika Westerberg <mika.westerberg@...ux.intel.com>,
Yehezkel Bernat <YehezkelShB@...il.com>,
Rob Herring <robh@...nel.org>,
Jiri Slaby <jirislaby@...nel.org>,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
"Michael S. Tsirkin" <mst@...hat.com>,
Jason Wang <jasowang@...hat.com>,
Kirti Wankhede <kwankhede@...dia.com>,
Alex Williamson <alex.williamson@...hat.com>,
Martyn Welch <martyn@...chs.me.uk>,
Manohar Vanga <manohar.vanga@...il.com>,
Boris Ostrovsky <boris.ostrovsky@...cle.com>,
Juergen Gross <jgross@...e.com>,
Stefano Stabellini <sstabellini@...nel.org>,
Johannes Berg <johannes@...solutions.net>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>, Marc Zyngier <maz@...nel.org>,
Tyrel Datwyler <tyreld@...ux.ibm.com>,
Vladimir Zapolskiy <vz@...ia.com>,
Samuel Holland <samuel@...lland.org>,
Qinglang Miao <miaoqinglang@...wei.com>,
Alexey Kardashevskiy <aik@...abs.ru>,
Kai-Heng Feng <kai.heng.feng@...onical.com>,
Joey Pabalan <jpabalanb@...il.com>,
Pali Rohár <pali@...nel.org>,
Adrian Hunter <adrian.hunter@...el.com>,
Frank Li <lznuaa@...il.com>,
Mike Christie <michael.christie@...cle.com>,
Bodo Stroesser <bostroesser@...il.com>,
Hannes Reinecke <hare@...e.de>,
David Woodhouse <dwmw@...zon.co.uk>,
SeongJae Park <sjpark@...zon.de>,
Julien Grall <jgrall@...zon.com>,
linux-arm-kernel@...ts.infradead.org, linux-mips@...r.kernel.org,
linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-acpi@...r.kernel.org, linux-wireless@...r.kernel.org,
linux-sunxi@...ts.linux.dev, linux-cxl@...r.kernel.org,
nvdimm@...ts.linux.dev, dmaengine@...r.kernel.org,
linux1394-devel@...ts.sourceforge.net, linux-fpga@...r.kernel.org,
linux-input@...r.kernel.org, linux-hyperv@...r.kernel.org,
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industrypack-devel@...ts.sourceforge.net,
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netdev@...r.kernel.org, linux-ntb@...glegroups.com,
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virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
xen-devel@...ts.xenproject.org,
Russell King <rmk+kernel@...linux.org.uk>,
Johannes Thumshirn <jth@...nel.org>
Subject: Re: [PATCH v2 4/4] bus: Make remove callback return void
On 7/6/21 5:48 PM, Uwe Kleine-König wrote:
> The driver core ignores the return value of this callback because there
> is only little it can do when a device disappears.
>
> This is the final bit of a long lasting cleanup quest where several
> buses were converted to also return void from their remove callback.
> Additionally some resource leaks were fixed that were caused by drivers
> returning an error code in the expectation that the driver won't go
> away.
>
> With struct bus_type::remove returning void it's prevented that newly
> implemented buses return an ignored error code and so don't anticipate
> wrong expectations for driver authors.
>
> Acked-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk> (For ARM, Amba and related parts)
> Acked-by: Mark Brown <broonie@...nel.org>
> Acked-by: Chen-Yu Tsai <wens@...e.org> (for drivers/bus/sunxi-rsb.c)
> Acked-by: Pali Rohár <pali@...nel.org>
> Acked-by: Mauro Carvalho Chehab <mchehab@...nel.org> (for drivers/media)
> Acked-by: Hans de Goede <hdegoede@...hat.com> (For drivers/platform)
> Acked-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
> Acked-By: Vinod Koul <vkoul@...nel.org>
> Acked-by: Juergen Gross <jgross@...e.com> (For Xen)
> Acked-by: Lee Jones <lee.jones@...aro.org> (For drivers/mfd)
> Acked-by: Johannes Thumshirn <jth@...nel.org> (For drivers/mcb)
> Acked-by: Johan Hovold <johan@...nel.org>
> Acked-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org> (For drivers/slimbus)
> Acked-by: Kirti Wankhede <kwankhede@...dia.com> (For drivers/vfio)
> Acked-by: Maximilian Luz <luzmaximilian@...il.com>
> Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com> (For ulpi and typec)
> Acked-by: Samuel Iglesias Gonsálvez <siglesias@...lia.com> (For ipack)
> Reviewed-by: Tom Rix <trix@...hat.com> (For fpga)
> Acked-by: Geoff Levand <geoff@...radead.org> (For ps3)
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> ---
>
[...]
> drivers/hid/hid-core.c | 4 +---
> drivers/hid/intel-ish-hid/ishtp/bus.c | 4 +---
[...]
> diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
> index 7db332139f7d..dbed2524fd47 100644
> --- a/drivers/hid/hid-core.c
> +++ b/drivers/hid/hid-core.c
> @@ -2302,7 +2302,7 @@ static int hid_device_probe(struct device *dev)
> return ret;
> }
>
> -static int hid_device_remove(struct device *dev)
> +static void hid_device_remove(struct device *dev)
> {
> struct hid_device *hdev = to_hid_device(dev);
> struct hid_driver *hdrv;
> @@ -2322,8 +2322,6 @@ static int hid_device_remove(struct device *dev)
>
> if (!hdev->io_started)
> up(&hdev->driver_input_lock);
> -
> - return 0;
> }
>
> static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
> diff --git a/drivers/hid/intel-ish-hid/ishtp/bus.c b/drivers/hid/intel-ish-hid/ishtp/bus.c
> index f0802b047ed8..8a51bd9cd093 100644
> --- a/drivers/hid/intel-ish-hid/ishtp/bus.c
> +++ b/drivers/hid/intel-ish-hid/ishtp/bus.c
> @@ -255,7 +255,7 @@ static int ishtp_cl_bus_match(struct device *dev, struct device_driver *drv)
> *
> * Return: Return value from driver remove() call.
> */
> -static int ishtp_cl_device_remove(struct device *dev)
> +static void ishtp_cl_device_remove(struct device *dev)
> {
> struct ishtp_cl_device *device = to_ishtp_cl_device(dev);
> struct ishtp_cl_driver *driver = to_ishtp_cl_driver(dev->driver);
> @@ -267,8 +267,6 @@ static int ishtp_cl_device_remove(struct device *dev)
>
> if (driver->remove)
> driver->remove(device);
> -
> - return 0;
> }
>
> /**
For the HID part:
Acked-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cheers,
Benjamin
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