Received-SPF: pass (google.com: domain of linux-kernel+bounces-63690-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.80.249 as permitted sender) client-ip=147.75.80.249;
From: "Ricardo B. Marliere" <ricardo@marliere.net>
Date: Tue, 13 Feb 2024 11:38:02 -0300
Subject: [PATCH] parisc: make parisc_bus_type const
Precedence: bulk
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <20240213-bus_cleanup-parisc-v1-1-2e61c77e66c6@marliere.net>
To: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>, 
 Helge Deller <deller@gmx.de>
Cc: linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, 
 Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@marliere.net>

Since commit d492cc2573a0 ("driver core: device.h: make struct
bus_type a const *"), the driver core can properly handle constant
struct bus_type, move the parisc_bus_type variable to be a constant
structure as well, placing it into read-only memory which can not be
modified at runtime.

Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
---
 arch/parisc/include/asm/parisc-device.h | 2 +-
 arch/parisc/kernel/drivers.c            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/parisc/include/asm/parisc-device.h b/arch/parisc/include/asm/parisc-device.h
index 4de3b391d812..7ddd7f433367 100644
--- a/arch/parisc/include/asm/parisc-device.h
+++ b/arch/parisc/include/asm/parisc-device.h
@@ -61,7 +61,7 @@ parisc_get_drvdata(struct parisc_device *d)
 	return dev_get_drvdata(&d->dev);
 }
 
-extern struct bus_type parisc_bus_type;
+extern const struct bus_type parisc_bus_type;
 
 int iosapic_serial_irq(struct parisc_device *dev);
 
diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c
index c7ff339732ba..ac19d685e4a5 100644
--- a/arch/parisc/kernel/drivers.c
+++ b/arch/parisc/kernel/drivers.c
@@ -618,7 +618,7 @@ static struct attribute *parisc_device_attrs[] = {
 };
 ATTRIBUTE_GROUPS(parisc_device);
 
-struct bus_type parisc_bus_type = {
+const struct bus_type parisc_bus_type = {
 	.name = "parisc",
 	.match = parisc_generic_match,
 	.uevent = parisc_uevent,

---
base-commit: 82b143aeb169b8b55798d7d2063032e1a6ceeeb0
change-id: 20240213-bus_cleanup-parisc-93098359acbe

Best regards,
-- 
Ricardo B. Marliere <ricardo@marliere.net>