From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: Saravana Kannan <saravanak@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Sudeep Holla <sudeep.holla@arm.com>,
Cristian Marussi <cristian.marussi@arm.com>,
Linus Walleij <linus.walleij@linaro.org>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>, Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
NXP Linux Team <linux-imx@nxp.com>,
Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Geert Uytterhoeven <geert+renesas@glider.be>,
Magnus Damm <magnus.damm@gmail.com>, Len Brown <lenb@kernel.org>,
Daniel Scally <djrscally@gmail.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Tony Lindgren <tony@atomide.com>,
Linux Kernel Functional Testing <lkft@linaro.org>,
Naresh Kamboju <naresh.kamboju@linaro.org>,
Abel Vesa <abel.vesa@linaro.org>,
Alexander Stein <alexander.stein@ew.tq-group.com>,
Geert Uytterhoeven <geert@linux-m68k.org>,
John Stultz <jstultz@google.com>,
Doug Anderson <dianders@chromium.org>,
Guenter Roeck <linux@roeck-us.net>,
Dmitry Baryshkov <dmitry.baryshkov@linaro.org>,
Maxim Kiselev <bigunclemax@gmail.com>,
Maxim Kochetkov <fido_max@inbox.ru>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Luca Weiss <luca.weiss@fairphone.com>,
Colin Foster <colin.foster@in-advantage.com>,
Martin Kepplinger <martin.kepplinger@puri.sm>,
Jean-Philippe Brucker <jpb@kernel.org>,
kernel-team@android.com, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org,
devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH v2 06/11] driver core: fw_devlink: Allow marking a fwnode link as being part of a cycle
Date: Fri, 27 Jan 2023 11:33:28 +0200 [thread overview]
Message-ID: <Y9OaaC806Ywg7rM9@smile.fi.intel.com> (raw)
In-Reply-To: <20230127001141.407071-7-saravanak@google.com>
On Thu, Jan 26, 2023 at 04:11:33PM -0800, Saravana Kannan wrote:
> To improve detection and handling of dependency cycles, we need to be
> able to mark fwnode links as being part of cycles. fwnode links marked
> as being part of a cycle should not block their consumers from probing.
...
> + list_for_each_entry(link, &fwnode->suppliers, c_hook) {
> + if (link->flags & FWLINK_FLAG_CYCLE)
> + continue;
> + return link->supplier;
Hmm...
if (!(link->flags & FWLINK_FLAG_CYCLE))
return link->supplier;
?
> + }
> +
> + return NULL;
...
> - if (dev->fwnode && !list_empty(&dev->fwnode->suppliers) &&
> - !fw_devlink_is_permissive()) {
> - sup_fw = list_first_entry(&dev->fwnode->suppliers,
> - struct fwnode_link,
> - c_hook)->supplier;
> + sup_fw = fwnode_links_check_suppliers(dev->fwnode);
dev_fwnode() ?
...
> - val = !list_empty(&dev->fwnode->suppliers);
> + mutex_lock(&fwnode_link_lock);
> + val = !!fwnode_links_check_suppliers(dev->fwnode);
Ditto?
> + mutex_unlock(&fwnode_link_lock);
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2023-01-27 9:34 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-27 0:11 [PATCH v2 00/11] fw_devlink improvements Saravana Kannan
2023-01-27 0:11 ` [PATCH v2 01/11] driver core: fw_devlink: Don't purge child fwnode's consumer links Saravana Kannan
2023-01-27 9:21 ` Andy Shevchenko
2023-01-28 7:33 ` Saravana Kannan
2023-01-30 12:04 ` Andy Shevchenko
2023-01-27 0:11 ` [PATCH v2 02/11] driver core: fw_devlink: Improve check for fwnode with no device/driver Saravana Kannan
2023-01-27 0:11 ` [PATCH v2 03/11] soc: renesas: Move away from using OF_POPULATED for fw_devlink Saravana Kannan
2023-01-27 8:11 ` Geert Uytterhoeven
2023-01-28 7:18 ` Saravana Kannan
2023-01-30 8:42 ` Geert Uytterhoeven
2023-01-30 20:00 ` Saravana Kannan
2023-01-31 8:14 ` Geert Uytterhoeven
2023-02-04 22:30 ` Saravana Kannan
2023-01-27 9:25 ` Andy Shevchenko
2023-01-27 9:30 ` Geert Uytterhoeven
2023-01-27 9:44 ` Andy Shevchenko
2023-01-27 0:11 ` [PATCH v2 04/11] gpiolib: Clear the gpio_device's fwnode initialized flag before adding Saravana Kannan
2023-01-27 9:27 ` Andy Shevchenko
2023-01-28 7:33 ` Saravana Kannan
2023-01-30 12:05 ` Andy Shevchenko
2023-01-30 14:31 ` Sudeep Holla
2023-01-30 15:14 ` Andy Shevchenko
2023-01-31 4:01 ` Saravana Kannan
2023-01-31 10:13 ` Sudeep Holla
2023-02-04 22:32 ` Saravana Kannan
2023-01-27 0:11 ` [PATCH v2 05/11] driver core: fw_devlink: Add DL_FLAG_CYCLE support to device links Saravana Kannan
2023-01-27 9:29 ` Andy Shevchenko
2023-01-27 9:30 ` Andy Shevchenko
2023-01-27 9:55 ` Geert Uytterhoeven
2023-01-28 7:34 ` Saravana Kannan
2023-01-30 12:08 ` Andy Shevchenko
2023-01-27 0:11 ` [PATCH v2 06/11] driver core: fw_devlink: Allow marking a fwnode link as being part of a cycle Saravana Kannan
2023-01-27 9:33 ` Andy Shevchenko [this message]
2023-01-28 7:34 ` Saravana Kannan
2023-01-30 12:09 ` Andy Shevchenko
2023-01-27 0:11 ` [PATCH v2 07/11] driver core: fw_devlink: Consolidate device link flag computation Saravana Kannan
2023-01-27 0:11 ` [PATCH v2 08/11] driver core: fw_devlink: Make cycle detection more robust Saravana Kannan
2023-01-27 9:43 ` Andy Shevchenko
2023-01-27 9:52 ` Geert Uytterhoeven
2023-01-27 10:10 ` Andy Shevchenko
2023-01-27 10:29 ` Geert Uytterhoeven
2023-01-28 7:34 ` Saravana Kannan
2023-01-30 12:15 ` Andy Shevchenko
2023-01-30 14:36 ` Geert Uytterhoeven
2023-01-30 15:16 ` Andy Shevchenko
2023-01-27 0:11 ` [PATCH v2 09/11] of: property: Simplify of_link_to_phandle() Saravana Kannan
2023-01-30 14:39 ` Sakari Ailus
2023-01-31 3:51 ` Saravana Kannan
2023-01-27 0:11 ` [PATCH v2 10/11] irqchip/irq-imx-gpcv2: Mark fwnode device as not initialized Saravana Kannan
2023-01-27 9:51 ` Andy Shevchenko
2023-01-28 7:34 ` Saravana Kannan
2023-01-27 0:11 ` [PATCH v2 11/11] firmware: arm_scmi: Set fwnode for the scmi_device Saravana Kannan
2023-01-27 9:52 ` Andy Shevchenko
2023-01-27 10:48 ` Sudeep Holla
2023-01-27 20:30 ` [PATCH v2 00/11] fw_devlink improvements Colin Foster
2023-01-27 21:35 ` Saravana Kannan
2023-01-30 8:55 ` Naresh Kamboju
2023-01-30 10:49 ` Marc Zyngier
2023-01-30 23:03 ` Saravana Kannan
2023-01-31 10:18 ` Sudeep Holla
2023-02-02 17:36 ` Maxim Kiselev
2023-02-03 6:07 ` Saravana Kannan
2023-02-03 9:39 ` Maxim Kiselev
2023-02-06 1:32 ` Saravana Kannan
2023-02-06 2:17 ` Saravana Kannan
2023-02-06 9:39 ` Miquel Raynal
2023-02-06 20:08 ` Saravana Kannan
2023-02-24 14:46 ` Miquel Raynal
2023-02-06 15:18 ` Rob Herring
2023-02-06 19:59 ` Saravana Kannan
2023-01-30 10:48 ` Miquel Raynal
2023-01-30 12:08 ` Maxim Kiselev
2023-01-31 1:20 ` Saravana Kannan
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