From: Sakari Ailus <sakari.ailus@linux.intel.com>
To: Daniel Scally <djrscally@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Linux Media Mailing List <linux-media@vger.kernel.org>,
devel@acpica.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Yong Zhi <yong.zhi@intel.com>, Bingbu Cao <bingbu.cao@intel.com>,
Tian Shu Qiu <tian.shu.qiu@intel.com>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Robert Moore <robert.moore@intel.com>,
Erik Kaneda <erik.kaneda@intel.com>,
Petr Mladek <pmladek@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
Jacopo Mondi <jacopo+renesas@jmondi.org>,
kieran.bingham+renesas@ideasonboard.com,
Linus Walleij <linus.walleij@linaro.org>,
"Krogerus, Heikki" <heikki.krogerus@linux.intel.com>,
Tsuchiya Yuto <kitakar@gmail.com>,
jorhand@linux.microsoft.com
Subject: Re: [PATCH v2 12/12] ipu3-cio2: Add cio2-bridge to ipu3-cio2 driver
Date: Mon, 21 Dec 2020 12:57:32 +0200 [thread overview]
Message-ID: <20201221105732.GL26370@paasikivi.fi.intel.com> (raw)
In-Reply-To: <5ba6ada9-c8a6-fa66-b8d6-5769b7bcdfea@gmail.com>
On Mon, Dec 21, 2020 at 10:52:52AM +0000, Daniel Scally wrote:
>
> On 21/12/2020 10:21, Sakari Ailus wrote:
> > Hi Daniel, Andy,
> >
> > On Sat, Dec 19, 2020 at 11:48:51PM +0000, Daniel Scally wrote:
> >> On 19/12/2020 18:52, Andy Shevchenko wrote:
> >>> On Sat, Dec 19, 2020 at 2:25 AM Daniel Scally <djrscally@gmail.com> wrote:
> >>>> On 18/12/2020 21:17, Andy Shevchenko wrote:
> >>>>> On Thu, Dec 17, 2020 at 11:43:37PM +0000, Daniel Scally wrote:
> >>> ...
> >>>
> >>>>>> + sensor->ep_properties[0] = PROPERTY_ENTRY_U32(sensor->prop_names.bus_type, 4);
> >>>>> Does 4 has any meaning that can be described by #define ?
> >>>> It's V4L2_FWNODE_BUS_TYPE_CSI2_DPHY:
> >>>>
> >>>> https://elixir.bootlin.com/linux/latest/source/drivers/media/v4l2-core/v4l2-fwnode.c#L36
> >>>>
> >>>> That enum's not in an accessible header, but I can define it in this
> >>>> module's header
> >>> Maybe you can do a preparatory patch to make it visible to v4l2
> >>> drivers? (Like moving to one of v4l2 headers)
> >> Sure ok, guess media/v4l2-fwnode.h makes the most sense.
> > Yes, please.
> Done for the next version
> >
> >>> ...
> >>>
> >>>>>> + if (bridge->n_sensors >= CIO2_NUM_PORTS) {
> >>>>>> + dev_warn(&cio2->dev, "Exceeded available CIO2 ports\n");
> >>>>>> + /* overflow i so outer loop ceases */
> >>>>>> + i = ARRAY_SIZE(cio2_supported_sensors);
> >>>>>> + break;
> >>>>> Why not to create a new label below and assign ret here with probably comment
> >>>>> why it's not an error?
> >>>> Sure, I can do that, but since it wouldn't need any cleanup I could also
> >>>> just return 0 here as Laurent suggest (but with a comment explaining why
> >>>> that's ok as you say) - do you have a preference?
> >>> While it's a good suggestion it will bring a bit of inconsistency into
> >>> approach. Everywhere else in the function you are using the goto
> >>> approach.
> >>> So yes, I have a preference.
> >> No problem
> > Laurent also commented on the return code.
> >
> > I might just handle this as an error. The earlier ports are fine, but
> > there's also a problem with the data here. It'd be easier to spot that this
> > way, and we can change this in the future if need be.
>
>
> You mean just raise an error with dev_err()? Or fail the probe and
> unwind the 4 sensors that were already connected successfully? I'm fine
Both.
> with that if so - we have no in scope devices where that will be a
> problem at the moment.
I guess there will be quite a few additional things to address before
getting anything with four sensors working.
--
Regards,
Sakari Ailus
prev parent reply other threads:[~2020-12-21 10:59 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-17 23:43 [PATCH v2 00/12] Add functionality to ipu3-cio2 driver allowing software_node connections to sensors on platforms designed for Windows Daniel Scally
2020-12-17 23:43 ` [PATCH v2 01/12] software_node: Fix refcounts in software_node_get_next_child() Daniel Scally
2020-12-21 9:08 ` Sakari Ailus
2020-12-17 23:43 ` [PATCH v2 02/12] property: Return true in fwnode_device_is_available for NULL ops Daniel Scally
2020-12-21 9:10 ` Sakari Ailus
2020-12-17 23:43 ` [PATCH v2 03/12] property: Call fwnode_graph_get_endpoint_by_id() for fwnode->secondary Daniel Scally
2020-12-17 23:43 ` [PATCH v2 04/12] software_node: Enforce parent before child ordering of nodes arrays Daniel Scally
2020-12-18 16:02 ` Laurent Pinchart
2020-12-18 22:19 ` Daniel Scally
2020-12-18 20:29 ` Andy Shevchenko
2020-12-19 23:33 ` Daniel Scally
2020-12-17 23:43 ` [PATCH v2 05/12] software_node: unregister software_nodes in reverse order Daniel Scally
2020-12-18 20:31 ` Andy Shevchenko
2020-12-21 9:21 ` Sakari Ailus
2020-12-21 11:26 ` Andy Shevchenko
2020-12-23 22:24 ` Daniel Scally
2020-12-17 23:43 ` [PATCH v2 06/12] software_node: Add support for fwnode_graph*() family of functions Daniel Scally
2020-12-18 16:22 ` Laurent Pinchart
2020-12-18 22:13 ` Daniel Scally
2020-12-18 23:46 ` Daniel Scally
2020-12-18 20:37 ` Andy Shevchenko
2020-12-18 22:26 ` Daniel Scally
2020-12-21 9:34 ` Sakari Ailus
2020-12-21 10:01 ` Daniel Scally
2020-12-17 23:43 ` [PATCH v2 07/12] lib/test_printf.c: Use helper function to unwind array of software_nodes Daniel Scally
2020-12-17 23:43 ` [PATCH v2 08/12] ipu3-cio2: Add T: entry to MAINTAINERS Daniel Scally
2020-12-17 23:43 ` [PATCH v2 09/12] ipu3-cio2: Rename ipu3-cio2.c Daniel Scally
2020-12-17 23:43 ` [PATCH v2 10/12] media: v4l2-core: v4l2-async: Check sd->fwnode->secondary in match_fwnode() Daniel Scally
2020-12-17 23:43 ` [PATCH v2 11/12] acpi: Add acpi_dev_get_next_match_dev() and helper macro Daniel Scally
2020-12-18 20:42 ` Andy Shevchenko
2020-12-21 9:47 ` Sakari Ailus
2020-12-17 23:43 ` [PATCH v2 12/12] ipu3-cio2: Add cio2-bridge to ipu3-cio2 driver Daniel Scally
2020-12-18 16:53 ` Laurent Pinchart
2020-12-18 23:57 ` Daniel Scally
2020-12-19 0:39 ` Laurent Pinchart
2020-12-19 23:24 ` Daniel Scally
2020-12-18 21:17 ` Andy Shevchenko
2020-12-19 0:22 ` Daniel Scally
2020-12-19 18:52 ` Andy Shevchenko
2020-12-19 23:48 ` Daniel Scally
2020-12-21 10:21 ` Sakari Ailus
2020-12-21 10:52 ` Daniel Scally
2020-12-21 10:57 ` Sakari Ailus [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201221105732.GL26370@paasikivi.fi.intel.com \
--to=sakari.ailus@linux.intel.com \
--cc=andriy.shevchenko@linux.intel.com \
--cc=andy.shevchenko@gmail.com \
--cc=bingbu.cao@intel.com \
--cc=devel@acpica.org \
--cc=djrscally@gmail.com \
--cc=erik.kaneda@intel.com \
--cc=gregkh@linuxfoundation.org \
--cc=heikki.krogerus@linux.intel.com \
--cc=jacopo+renesas@jmondi.org \
--cc=jorhand@linux.microsoft.com \
--cc=kieran.bingham+renesas@ideasonboard.com \
--cc=kitakar@gmail.com \
--cc=laurent.pinchart+renesas@ideasonboard.com \
--cc=lenb@kernel.org \
--cc=linus.walleij@linaro.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=linux@rasmusvillemoes.dk \
--cc=mchehab@kernel.org \
--cc=pmladek@suse.com \
--cc=rjw@rjwysocki.net \
--cc=robert.moore@intel.com \
--cc=rostedt@goodmis.org \
--cc=sergey.senozhatsky@gmail.com \
--cc=tian.shu.qiu@intel.com \
--cc=yong.zhi@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).