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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2025-07-01 14:07:39 +0200
committerDave Jiang <dave.jiang@intel.com>2025-07-01 08:12:57 -0700
commitac0fe6a5731700bcea6fecfd5d0b76c0454b3a20 (patch)
tree2e0cbd1d2a7d19ff3c3f913216d0105f4f6b4ace
parentd7b9056c3a6c58d41074b7ba19ab7fd34ce9f63e (diff)
cxl: make cxl_bus_type constant
Now that the driver core can properly handle constant struct bus_type, move the cxl_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Jonathan Cameron <jonathan.cameron@huawei.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Alison Schofield <alison.schofield@intel.com> Cc: Vishal Verma <vishal.l.verma@intel.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: linux-cxl@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://patch.msgid.link/2025070138-vigorous-negative-eae7@gregkh Signed-off-by: Dave Jiang <dave.jiang@intel.com>
-rw-r--r--drivers/cxl/core/port.c2
-rw-r--r--drivers/cxl/cxl.h2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c
index eb46c6764d20..0696f7fcef56 100644
--- a/drivers/cxl/core/port.c
+++ b/drivers/cxl/core/port.c
@@ -2293,7 +2293,7 @@ static const struct attribute_group *cxl_bus_attribute_groups[] = {
NULL,
};
-struct bus_type cxl_bus_type = {
+const struct bus_type cxl_bus_type = {
.name = "cxl",
.uevent = cxl_bus_uevent,
.match = cxl_bus_match,
diff --git a/drivers/cxl/cxl.h b/drivers/cxl/cxl.h
index 3f1695c96abc..e7b66ca1d423 100644
--- a/drivers/cxl/cxl.h
+++ b/drivers/cxl/cxl.h
@@ -815,7 +815,7 @@ int cxl_dvsec_rr_decode(struct cxl_dev_state *cxlds,
bool is_cxl_region(struct device *dev);
-extern struct bus_type cxl_bus_type;
+extern const struct bus_type cxl_bus_type;
struct cxl_driver {
const char *name;