From: Dmitry Torokhov <dmitry.torokhov@gmail.com>
To: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Mika Westerberg <mika.westerberg@linux.intel.com>,
Linus Walleij <linus.walleij@linaro.org>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
platform-driver-x86@vger.kernel.org
Subject: Re: [PATCH v5 05/14] software node: clean up property_copy_string_array()
Date: Wed, 16 Oct 2019 10:00:59 -0700 [thread overview]
Message-ID: <20191016170059.GE35946@dtor-ws> (raw)
In-Reply-To: <20191016075300.GO32742@smile.fi.intel.com>
On Wed, Oct 16, 2019 at 10:53:00AM +0300, Andy Shevchenko wrote:
> On Tue, Oct 15, 2019 at 11:12:11AM -0700, Dmitry Torokhov wrote:
> > On Tue, Oct 15, 2019 at 03:07:26PM +0300, Andy Shevchenko wrote:
> > > On Fri, Oct 11, 2019 at 04:07:12PM -0700, Dmitry Torokhov wrote:
> > > > Because property_copy_string_array() stores the newly allocated pointer in the
> > > > destination property, we have an awkward code in property_entry_copy_data()
> > > > where we fetch the new pointer from dst.
> > >
> > > I don't see a problem in this function.
> > >
> > > Rather 'awkward code' is a result of use property_set_pointer() which relies on
> > > data type.
> >
> > No, the awkwardness is that we set the pointer once in
> > property_copy_string_array(), then fetch it in
> > property_entry_copy_data() only to set it again via
> > property_set_pointer().
>
> Yes, since property_set_pointer is called independently
> on the type of the value.
We still call property_set_pointer() independently of the type of the
value even with this patch. The point is that we do not set the pointer
in property_copy_string_array(), so we only set the pointer once.
We used to have essentially for string arrays:
copy data
set pointer in dst
get pointer from dst
set pointer in dst
With this patch we have:
copy data
set pointer in dst
>
>
> > This is confising and awkward and I believe it
> > is cleaner for property_copy_string_array() to give a pointer to a copy
> > of a string array, and then property_entry_copy_data() use it when
> > handling the destination structure.
>
> We probably need a 3rd opinion here.
I think I can still convince you ;)
Thanks.
--
Dmitry
next prev parent reply other threads:[~2019-10-16 17:01 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-11 23:07 [PATCH v5 00/14] software node: add support for reference properties Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 01/14] software node: remove DEV_PROP_MAX Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 02/14] software node: introduce PROPERTY_ENTRY_ARRAY_XXX_LEN() Dmitry Torokhov
2019-10-15 12:02 ` Andy Shevchenko
2019-10-11 23:07 ` [PATCH v5 03/14] efi/apple-properties: use PROPERTY_ENTRY_U8_ARRAY_LEN Dmitry Torokhov
2019-10-15 12:01 ` Andy Shevchenko
2019-10-15 18:02 ` Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 04/14] software node: mark internal macros with double underscores Dmitry Torokhov
2019-10-15 12:03 ` Andy Shevchenko
2019-10-15 18:09 ` Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 05/14] software node: clean up property_copy_string_array() Dmitry Torokhov
2019-10-15 12:07 ` Andy Shevchenko
2019-10-15 18:12 ` Dmitry Torokhov
2019-10-16 7:53 ` Andy Shevchenko
2019-10-16 17:00 ` Dmitry Torokhov [this message]
2019-10-17 7:02 ` Andy Shevchenko
2019-10-11 23:07 ` [PATCH v5 06/14] software node: get rid of property_set_pointer() Dmitry Torokhov
2019-10-15 12:09 ` Andy Shevchenko
2019-10-15 18:14 ` Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 07/14] software node: remove property_entry_read_uNN_array functions Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 08/14] software node: unify PROPERTY_ENTRY_XXX macros Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 09/14] software node: simplify property_entry_read_string_array() Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 10/14] software node: rename is_array to is_inline Dmitry Torokhov
2019-10-14 7:37 ` Andy Shevchenko
2019-10-15 18:22 ` Dmitry Torokhov
2019-10-16 7:59 ` Andy Shevchenko
2019-10-16 16:54 ` Dmitry Torokhov
2019-10-17 7:16 ` Andy Shevchenko
2019-10-17 16:00 ` Dmitry Torokhov
2019-10-17 16:02 ` Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 11/14] software node: move small properties inline when copying Dmitry Torokhov
2019-10-15 12:20 ` Andy Shevchenko
2019-10-15 18:25 ` Dmitry Torokhov
2019-10-16 7:48 ` Andy Shevchenko
2019-10-16 16:01 ` Dmitry Torokhov
2019-10-16 16:18 ` Andy Shevchenko
2019-10-16 16:23 ` Andy Shevchenko
2019-10-16 16:44 ` Dmitry Torokhov
2019-10-17 16:04 ` Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 12/14] software node: implement reference properties Dmitry Torokhov
2019-10-11 23:07 ` [PATCH v5 13/14] platform/x86: intel_cht_int33fe: use inline " Dmitry Torokhov
2019-10-16 8:01 ` Andy Shevchenko
2019-10-11 23:07 ` [PATCH v5 14/14] software node: remove separate handling of references Dmitry Torokhov
2019-10-14 7:38 ` [PATCH v5 00/14] software node: add support for reference properties Andy Shevchenko
2019-10-14 23:57 ` Dmitry Torokhov
2019-10-16 8:02 ` Andy Shevchenko
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