linux-kernel - [PATCH 1/4] powerpc: cell: make spu

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Message-Id: <20240204-bus_cleanup-powerpc-v1-1-c763f0e142e9@marliere.net>
Date: Sun, 04 Feb 2024 11:21:55 -0300
From: "Ricardo B. Marliere" <ricardo@...liere.net>
To: Arnd Bergmann <arnd@...db.de>, Michael Ellerman <mpe@...erman.id.au>, 
 Nicholas Piggin <npiggin@...il.com>, 
 Christophe Leroy <christophe.leroy@...roup.eu>, 
 Geoff Levand <geoff@...radead.org>
Cc: linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 "Ricardo B. Marliere" <ricardo@...liere.net>
Subject: [PATCH 1/4] powerpc: cell: make spu_subsys const

Now that the driver core can properly handle constant struct bus_type,
move the spu_subsys 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@...uxfoundation.org>
Suggested-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Ricardo B. Marliere <ricardo@...liere.net>
---
 arch/powerpc/platforms/cell/spu_base.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c
index dea6f0f25897..346e433d2706 100644
--- a/arch/powerpc/platforms/cell/spu_base.c
+++ b/arch/powerpc/platforms/cell/spu_base.c
@@ -465,7 +465,7 @@ void spu_init_channels(struct spu *spu)
 }
 EXPORT_SYMBOL_GPL(spu_init_channels);

-static struct bus_type spu_subsys = {
+static const struct bus_type spu_subsys = {
 	.name = "spu",
 	.dev_name = "spu",
 };

-- 
2.43.0