linux-kernel - [PATCH v1 3/8] gpiolib: Warn on drivers still using static gpiobase allocation

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Message-Id: <92aaf098d7039fd4040015b07ba1f99daf674f50.1661789204.git.christophe.leroy@csgroup.eu>
Date:   Mon, 29 Aug 2022 18:15:05 +0200
From:   Christophe Leroy <christophe.leroy@...roup.eu>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Keerthy <j-keerthy@...com>, Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Jonathan Corbet <corbet@....net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
Cc:     Christophe Leroy <christophe.leroy@...roup.eu>,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-arch@...r.kernel.org,
        linux-doc@...r.kernel.org, x86@...nel.org
Subject: [PATCH v1 3/8] gpiolib: Warn on drivers still using static gpiobase allocation

In the preparation of getting completely rid of static gpiobase
allocation in the future, emit a warning in drivers still doing so.

Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 drivers/gpio/gpiolib.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index cc9c0a12259e..3a6f29eeb72d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -715,6 +715,9 @@ int gpiochip_add_data_with_key(struct gpio_chip *gc, void *data,
 		 * a poison instead.
 		 */
 		gc->base = base;
+	} else {
+		dev_warn(&gdev->dev, "Static allocation of GPIO base is "
+				     "deprecated, use dynamic allocation.");
 	}
 	gdev->base = base;
 
-- 
2.37.1