fpga: dfl: make dfl_bus_type const

Now that the driver core can properly handle constant struct bus_type,
move the dfl_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>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20240204-bus_cleanup-fpga-v1-1-dae8b5bf7220@marliere.net
Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com>

diff --git a/drivers/fpga/dfl.c b/drivers/fpga/dfl.c
index e6d12fbab653fb9a5fb622497e284ddd553223b3..094ee97ea26cb18db87490c8205f4cb095426f57 100644 (file)
--- a/drivers/fpga/dfl.c
+++ b/drivers/fpga/dfl.c
@@ -327,7 +327,7 @@ static struct attribute *dfl_dev_attrs[] = {
 };
 ATTRIBUTE_GROUPS(dfl_dev);
 
-static struct bus_type dfl_bus_type = {
+static const struct bus_type dfl_bus_type = {
        .name           = "dfl",
        .match          = dfl_bus_match,
        .probe          = dfl_bus_probe,