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SubjectRe: [PATCH v2 0/6] Stop NULLifying match pointer in of_match_device()
On Fri, Jan 22, 2021 at 9:44 PM Stephen Boyd <swboyd@chromium.org> wrote:
>
> (This is a continuation of this series[1] per Rob's request. I've picked
> up the acks, etc. with b4 and compile tested the patches along with an
> arm64 allmodconfig build. Presumably Rob will pick these up directly.)
>
> of_match_device() uses of_match_ptr() to make the match table argument
> NULL via the pre-processor when CONFIG_OF=n. This makes life harder for
> compilers who think that match tables are never used and warn about
> unused variables when CONFIG_OF=n. This series changes various callers
> to use of_device_get_match_data() instead, which doesn't have this
> problem, and removes the of_match_ptr() usage from of_match_device() so
> that the compiler can stop complaining about unused variables. It will
> do dead code elimination instead and remove the match table if it isn't
> actually used.
>
> [1] https://lore.kernel.org/r/20191004214334.149976-1-swboyd@chromium.org
>
> Cc: Alexandre Torgue <alexandre.torgue@st.com>
> Cc: Arnd Bergmann <arnd@arndb.de>
> Cc: "David S. Miller" <davem@davemloft.net>
> Cc: Frank Rowand <frowand.list@gmail.com>
> Cc: Geert Uytterhoeven <geert@linux-m68k.org>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: Grygorii Strashko <grygorii.strashko@ti.com>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: Jacopo Mondi <jacopo@jmondi.org>
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: Jiri Slaby <jslaby@suse.com>
> Cc: <linux-hwmon@vger.kernel.org>
> Cc: <linux-kernel@vger.kernel.org>,
> Cc: <linux-media@vger.kernel.org>
> Cc: <linux-omap@vger.kernel.org>
> Cc: <linux-renesas-soc@vger.kernel.org>
> Cc: <linux-serial@vger.kernel.org>
> Cc: <linux-usb@vger.kernel.org>
> Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
> Cc: Richard Leitner <richard.leitner@skidata.com>
> Cc: Rob Herring <robh+dt@kernel.org>
>
> Stephen Boyd (6):
> media: renesas-ceu: Use of_device_get_match_data()
> drivers: net: davinci_mdio: Use of_device_get_match_data()
> serial: stm32: Use of_device_get_match_data()
> usb: usb251xb: Use of_device_get_match_data()
> hwmon: (lm70) Avoid undefined reference to match table
> of/device: Don't NULLify match table in of_match_device() with
> CONFIG_OF=n
>
> drivers/hwmon/lm70.c | 2 +-
> drivers/media/platform/renesas-ceu.c | 2 +-
> drivers/net/ethernet/ti/davinci_mdio.c | 12 ++---
> drivers/tty/serial/stm32-usart.c | 71 ++++++++++++--------------
> drivers/tty/serial/stm32-usart.h | 2 +-
> drivers/usb/misc/usb251xb.c | 12 ++---
> include/linux/of_device.h | 4 +-
> 7 files changed, 47 insertions(+), 58 deletions(-)

Series applied.


Rob

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