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authorIvan Orlov <ivan.orlov0322@gmail.com>2023-08-11 10:30:41 +0300
committerXu Yilun <yilun.xu@intel.com>2023-08-11 18:03:37 +0300
commit7bb2d2190d43264eea34d71de7627117db79f9c1 (patch)
tree317a0d64af1a760bedf34764f6fc057ca32c9ffe /drivers/fpga
parent8607d9c1bd57da0a2d5f8ab2ec32b6ef7d85e66a (diff)
downloadlinux-7bb2d2190d43264eea34d71de7627117db79f9c1.tar.xz
fpga: bridge: make fpga_bridge_class a static const structure
Now that the driver core allows for struct class to be in read-only memory, move the fpga_bridge_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ivan Orlov <ivan.orlov0322@gmail.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20230811073043.52808-1-ivan.orlov0322@gmail.com Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Diffstat (limited to 'drivers/fpga')
-rw-r--r--drivers/fpga/fpga-bridge.c25
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/fpga/fpga-bridge.c b/drivers/fpga/fpga-bridge.c
index 0b76c67c50e5..a024be2b84e2 100644
--- a/drivers/fpga/fpga-bridge.c
+++ b/drivers/fpga/fpga-bridge.c
@@ -14,7 +14,7 @@
#include <linux/spinlock.h>
static DEFINE_IDA(fpga_bridge_ida);
-static struct class *fpga_bridge_class;
+static const struct class fpga_bridge_class;
/* Lock for adding/removing bridges to linked lists*/
static DEFINE_SPINLOCK(bridge_list_lock);
@@ -100,7 +100,7 @@ struct fpga_bridge *of_fpga_bridge_get(struct device_node *np,
{
struct device *dev;
- dev = class_find_device_by_of_node(fpga_bridge_class, np);
+ dev = class_find_device_by_of_node(&fpga_bridge_class, np);
if (!dev)
return ERR_PTR(-ENODEV);
@@ -127,7 +127,7 @@ struct fpga_bridge *fpga_bridge_get(struct device *dev,
{
struct device *bridge_dev;
- bridge_dev = class_find_device(fpga_bridge_class, NULL, dev,
+ bridge_dev = class_find_device(&fpga_bridge_class, NULL, dev,
fpga_bridge_dev_match);
if (!bridge_dev)
return ERR_PTR(-ENODEV);
@@ -360,7 +360,7 @@ fpga_bridge_register(struct device *parent, const char *name,
bridge->priv = priv;
bridge->dev.groups = br_ops->groups;
- bridge->dev.class = fpga_bridge_class;
+ bridge->dev.class = &fpga_bridge_class;
bridge->dev.parent = parent;
bridge->dev.of_node = parent->of_node;
bridge->dev.id = id;
@@ -416,21 +416,20 @@ static void fpga_bridge_dev_release(struct device *dev)
kfree(bridge);
}
+static const struct class fpga_bridge_class = {
+ .name = "fpga_bridge",
+ .dev_groups = fpga_bridge_groups,
+ .dev_release = fpga_bridge_dev_release,
+};
+
static int __init fpga_bridge_dev_init(void)
{
- fpga_bridge_class = class_create("fpga_bridge");
- if (IS_ERR(fpga_bridge_class))
- return PTR_ERR(fpga_bridge_class);
-
- fpga_bridge_class->dev_groups = fpga_bridge_groups;
- fpga_bridge_class->dev_release = fpga_bridge_dev_release;
-
- return 0;
+ return class_register(&fpga_bridge_class);
}
static void __exit fpga_bridge_dev_exit(void)
{
- class_destroy(fpga_bridge_class);
+ class_unregister(&fpga_bridge_class);
ida_destroy(&fpga_bridge_ida);
}