Messages in this thread Patch in this message | | | From | "Ricardo B. Marliere" <> | Date | Mon, 12 Feb 2024 17:05:00 -0300 | Subject | [PATCH v2 2/5] powerpc: vio: make vio_bus_type const |
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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 vio_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/powerpc/include/asm/vio.h | 2 +- arch/powerpc/platforms/pseries/vio.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/include/asm/vio.h b/arch/powerpc/include/asm/vio.h index cc9b787627ad..6faf2a931755 100644 --- a/arch/powerpc/include/asm/vio.h +++ b/arch/powerpc/include/asm/vio.h @@ -39,7 +39,7 @@ */ #define VIO_CMO_MIN_ENT 1562624 -extern struct bus_type vio_bus_type; +extern const struct bus_type vio_bus_type; struct iommu_table; diff --git a/arch/powerpc/platforms/pseries/vio.c b/arch/powerpc/platforms/pseries/vio.c index 6c58824190a2..90ff85c879bf 100644 --- a/arch/powerpc/platforms/pseries/vio.c +++ b/arch/powerpc/platforms/pseries/vio.c @@ -1615,7 +1615,7 @@ static struct attribute *vio_cmo_dev_attrs[] = { }; ATTRIBUTE_GROUPS(vio_cmo_dev); -struct bus_type vio_bus_type = { +const struct bus_type vio_bus_type = { .name = "vio", .dev_groups = vio_cmo_dev_groups, .bus_groups = vio_bus_groups, @@ -1634,7 +1634,7 @@ static struct attribute *vio_dev_attrs[] = { }; ATTRIBUTE_GROUPS(vio_dev); -struct bus_type vio_bus_type = { +const struct bus_type vio_bus_type = { .name = "vio", .dev_groups = vio_dev_groups, .uevent = vio_hotplug, -- 2.43.0
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