linux-kernel - [PATCH] dio: Have dio_bus_match() callback take a const *

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Message-Id: <20240710074452.2841173-1-geert@linux-m68k.org>
Date: Wed, 10 Jul 2024 09:44:52 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-m68k@...ts.linux-m68k.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] dio: Have dio_bus_match() callback take a const *

drivers/dio/dio-driver.c:128:11: error: initialization of ‘int (*)(struct device *, const struct device_driver *)’ from incompatible pointer type ‘int (*)(struct device *, struct device_driver *)’ [-Werror=incompatible-pointer-types]
  128 |  .match = dio_bus_match,
      |           ^~~~~~~~~~~~~
drivers/dio/dio-driver.c:128:11: note: (near initialization for ‘dio_bus_type.match’)

Reported-by: noreply@...erman.id.au
Fixes: d69d804845985c29 ("driver core: have match() callback in struct bus_type take a const *")
Signed-off-by: Geert Uytterhoeven <geert@...ux-m68k.org>
---
 drivers/dio/dio-driver.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/dio/dio-driver.c b/drivers/dio/dio-driver.c
index 2d9fa6011945d88b..12fa2d209dab9d3c 100644
--- a/drivers/dio/dio-driver.c
+++ b/drivers/dio/dio-driver.c
@@ -110,10 +110,10 @@ void dio_unregister_driver(struct dio_driver *drv)
  *  and 0 if there is no match.
  */
 
-static int dio_bus_match(struct device *dev, struct device_driver *drv)
+static int dio_bus_match(struct device *dev, const struct device_driver *drv)
 {
 	struct dio_dev *d = to_dio_dev(dev);
-	struct dio_driver *dio_drv = to_dio_driver(drv);
+	const struct dio_driver *dio_drv = to_dio_driver(drv);
 	const struct dio_device_id *ids = dio_drv->id_table;
 
 	if (!ids)
-- 
2.34.1