From: Stephen Boyd <swboyd@chromium.org>
To: Rob Herring <robh+dt@kernel.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Arnd Bergmann <arnd@arndb.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Frank Rowand <frowand.list@gmail.com>
Subject: Re: [PATCH 10/10] of/device: Don't NULLify match table in of_match_device() with CONFIG_OF=n
Date: Thu, 17 Oct 2019 13:48:06 -0700 [thread overview]
Message-ID: <5da8d386.1c69fb81.4cb85.a19a@mx.google.com> (raw)
In-Reply-To: <CAL_JsqLf+dLgva+xYNr56xQx3fsLNWsdJBxaJo8nyJDtRxoiyA@mail.gmail.com>
Quoting Rob Herring (2019-10-17 13:24:23)
> On Thu, Oct 17, 2019 at 12:48 PM Frank Rowand <frowand.list@gmail.com> wrote:
> >
> > On 10/04/2019 16:43, Stephen Boyd wrote:
> > > This effectively reverts 1db73ae39a97 ("of/device: Nullify match table
> > > in of_match_device() for CONFIG_OF=n") because that commit makes it more
> > > surprising to users of this API that the arguments may never be
> > > referenced by any code. This is because the pre-processor will replace
> > > the argument with NULL and then the match table will be left unreferenced
> > > by any code but the compiler optimizer doesn't know to drop it. This can
> > > lead to compilers warning that match tables are unused, when we really
> > > want to pass the match table to the API but have the compiler see that
> > > it's all inlined and not used and then drop the match table while
> > > silencing the warning. We're being too smart here and not giving the
> > > compiler the chance to do dead code elimination.
> > >
> > > Cc: Arnd Bergmann <arnd@arndb.de>
> > > Cc: Geert Uytterhoeven <geert@linux-m68k.org>
> > > Cc: Rob Herring <robh+dt@kernel.org>
> > > Cc: Frank Rowand <frowand.list@gmail.com>
> > > Signed-off-by: Stephen Boyd <swboyd@chromium.org>
> > > ---
> > >
> > > Please ack or pick for immediate merge so the last patch can be merged.
>
> As this one is the last patch, I guess you don't want it picked up by itself.
>
> It seems everyone has acked rather than applying. Do you want me to
> take the series?
>
It would be great if you could take the series.
Mark applied the ASoC and spi patches. I guess you can try to see if
those merged into mainline and then base on top, or just apply the same
patches on your tree and let the duplicates drop out in the merge path.
prev parent reply other threads:[~2019-10-17 20:48 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-04 21:43 [PATCH 00/10] Stop NULLifying match pointer in of_match_device() Stephen Boyd
2019-10-04 21:43 ` Stephen Boyd
2019-10-04 21:43 ` Stephen Boyd
2019-10-04 21:43 ` [PATCH 01/10] leds: pca953x: Use of_device_get_match_data() Stephen Boyd
2019-10-06 12:15 ` Jacek Anaszewski
2019-10-07 8:01 ` Geert Uytterhoeven
2019-10-13 12:10 ` Pavel Machek
2019-10-14 17:50 ` Andy Shevchenko
2019-10-14 20:54 ` Stephen Boyd
2019-10-15 9:02 ` Andy Shevchenko
2019-10-15 22:41 ` Stephen Boyd
2019-10-16 13:46 ` Andy Shevchenko
2019-11-04 9:09 ` Pavel Machek
2019-10-04 21:43 ` [PATCH 02/10] media: renesas-ceu: " Stephen Boyd
2019-10-09 12:54 ` Mauro Carvalho Chehab
2019-10-09 13:14 ` Jacopo Mondi
2019-10-04 21:43 ` [PATCH 03/10] rtc: armada38x: " Stephen Boyd
2019-10-07 13:53 ` Alexandre Belloni
2019-10-04 21:43 ` [PATCH 04/10] drivers: net: davinci_mdio: " Stephen Boyd
2019-10-04 21:43 ` [PATCH 05/10] serial: stm32: " Stephen Boyd
2019-10-05 6:53 ` Greg Kroah-Hartman
2019-10-04 21:43 ` [PATCH 06/10] usb: usb251xb: " Stephen Boyd
2019-10-05 6:53 ` Greg Kroah-Hartman
2019-10-04 21:43 ` [alsa-devel] [PATCH 07/10] ASoC: jz4740: " Stephen Boyd
2019-10-04 21:43 ` Stephen Boyd
2019-10-07 13:03 ` [alsa-devel] Applied "ASoC: jz4740: Use of_device_get_match_data()" to the asoc tree Mark Brown
2019-10-07 13:03 ` Mark Brown
2019-10-04 21:43 ` [PATCH 08/10] spi: gpio: Look for a device node instead of match Stephen Boyd
2019-10-07 13:03 ` Applied "spi: gpio: Look for a device node instead of match" to the spi tree Mark Brown
2019-10-07 13:03 ` Mark Brown
2019-10-04 21:43 ` [PATCH 09/10] hwmon: (lm70) Avoid undefined reference to match table Stephen Boyd
2019-10-04 23:03 ` Guenter Roeck
2019-10-04 21:43 ` [PATCH 10/10] of/device: Don't NULLify match table in of_match_device() with CONFIG_OF=n Stephen Boyd
2019-10-17 17:47 ` Frank Rowand
2019-10-17 20:24 ` Rob Herring
2019-10-17 20:48 ` Stephen Boyd [this message]
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