From: Dmitry Torokhov <dmitry.torokhov@gmail.com> To: "Bjørn Mork" <bjorn@mork.no> Cc: "Rafael J. Wysocki" <rafael@kernel.org>, Heikki Krogerus <heikki.krogerus@linux.intel.com>, Andy Shevchenko <andriy.shevchenko@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 v8 1/6] software node: rename is_array to is_inline Date: Wed, 13 Nov 2019 00:08:13 -0800 Message-ID: <20191113080813.GO13374@dtor-ws> (raw) In-Reply-To: <87woc4s1xg.fsf@miraculix.mork.no> On Wed, Nov 13, 2019 at 07:52:43AM +0100, Bjørn Mork wrote: > Dmitry Torokhov <dmitry.torokhov@gmail.com> writes: > > > We do not need a special flag to know if we are dealing with an array, > > as we can get that data from ratio between element length and the data > > size, however we do need a flag to know whether the data is stored > > directly inside property_entry or separately. > > Doesn't a non-null prop->pointer tell you this? No it does not because pointer is a part of a union. > > And inverting the flag is unnecessarily risky IMHO. An all-zero prop > might now result in dereferencing a NULL prop->pointer instead of using > the empty prop->value. Now I haven't looked at the code to see if this > is a real problem. But I believe it's better not having to do that > anyway... All-zero property is a terminator and thus we will not dereference anything. Thanks. -- Dmitry
next prev parent reply index Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-08 4:22 [PATCH v8 0/6] software node: add support for reference properties Dmitry Torokhov 2019-11-08 4:22 ` [PATCH v8 1/6] software node: rename is_array to is_inline Dmitry Torokhov 2019-11-08 9:49 ` Rafael J. Wysocki 2019-11-13 6:52 ` Bjørn Mork 2019-11-13 8:08 ` Dmitry Torokhov [this message] [not found] ` <CGME20191212111237eucas1p1a278d2d5d2437e3219896367e82604cc@eucas1p1.samsung.com> 2019-12-12 11:12 ` Marek Szyprowski 2019-12-12 11:28 ` Andy Shevchenko 2019-12-12 16:41 ` Rafael J. Wysocki 2019-12-13 6:47 ` Marek Szyprowski 2019-12-13 8:37 ` Rafael J. Wysocki 2019-12-13 1:24 ` Dmitry Torokhov 2019-12-13 6:44 ` Marek Szyprowski 2019-11-08 4:22 ` [PATCH v8 2/6] software node: allow embedding of small arrays into property_entry Dmitry Torokhov 2019-11-08 4:22 ` [PATCH v8 3/6] software node: implement reference properties Dmitry Torokhov [not found] ` <CGME20201109170241eucas1p14c2156334d8c6ef15d52664fa4776f41@eucas1p1.samsung.com> 2020-11-09 17:02 ` Lukasz Stelmach 2020-11-09 17:24 ` Andy Shevchenko [not found] ` <CGME20201109181851eucas1p241de8938e399c0b603c764593b057c41@eucas1p2.samsung.com> 2020-11-09 18:18 ` Lukasz Stelmach 2020-11-09 18:53 ` Dmitry Torokhov 2020-11-09 19:05 ` Andy Shevchenko 2020-11-10 12:39 ` Heikki Krogerus 2020-11-10 12:46 ` Rafael J. Wysocki [not found] ` <CGME20201109195504eucas1p19d493c947d8752e39c26202cf0978fc0@eucas1p1.samsung.com> 2020-11-09 19:54 ` Lukasz Stelmach 2020-11-09 19:02 ` Andy Shevchenko [not found] ` <CGME20201109194725eucas1p2cc9357486879a14b2ad2f6ef968ff4b2@eucas1p2.samsung.com> 2020-11-09 19:47 ` Lukasz Stelmach 2020-11-09 21:20 ` Andy Shevchenko 2019-11-08 4:22 ` [PATCH v8 4/6] platform/x86: intel_cht_int33fe: use inline " Dmitry Torokhov 2019-11-08 4:22 ` [PATCH v8 5/6] software node: remove separate handling of references Dmitry Torokhov 2019-11-08 4:22 ` [PATCH v8 6/6] software node: add basic tests for property entries Dmitry Torokhov
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