From 38370c4e25af7f5670787a1bb1861b289f2ad770 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 13 Mar 2023 19:29:09 +0100 Subject: [PATCH] driver core: bus: constify bus_get() It's funny to think about getting a reference count of a constant structure pointer, but this locks into place the private data "underneath" the struct bus_type() which is important to not go away while we are working with the bus structure for some callbacks. Cc: "Rafael J. Wysocki" Link: https://lore.kernel.org/r/20230313182918.1312597-27-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 8fea26c22521..84a21084d67d 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -84,7 +84,7 @@ done: return sp; } -static struct bus_type *bus_get(struct bus_type *bus) +static const struct bus_type *bus_get(const struct bus_type *bus) { struct subsys_private *sp = bus_to_subsys(bus); @@ -233,7 +233,7 @@ static const struct kset_uevent_ops bus_uevent_ops = { static ssize_t unbind_store(struct device_driver *drv, const char *buf, size_t count) { - struct bus_type *bus = bus_get(drv->bus); + const struct bus_type *bus = bus_get(drv->bus); struct device *dev; int err = -ENODEV; @@ -256,7 +256,7 @@ static DRIVER_ATTR_IGNORE_LOCKDEP(unbind, 0200, NULL, unbind_store); static ssize_t bind_store(struct device_driver *drv, const char *buf, size_t count) { - struct bus_type *bus = bus_get(drv->bus); + const struct bus_type *bus = bus_get(drv->bus); struct device *dev; int err = -ENODEV; -- 2.11.0