diff options
| author | Ivan Orlov <ivan.orlov0322@gmail.com> | 2023-08-11 11:30:43 +0400 |
|---|---|---|
| committer | Xu Yilun <yilun.xu@intel.com> | 2023-08-11 23:04:21 +0800 |
| commit | 1a22ec09a2c1d367a43cb7f837c7a8719e7fe975 (patch) | |
| tree | 7f597875efb611812750bdcd661400858485d5b5 /drivers/fpga | |
| parent | 909960e2e29d9ebda8ef303e338e43c03b3d1faf (diff) | |
fpga: region: make fpga_region_class a static const structure
Now that the driver core allows for struct class to be in read-only
memory, move the fpga_region_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/20230811073043.52808-3-ivan.orlov0322@gmail.com
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Diffstat (limited to 'drivers/fpga')
| -rw-r--r-- | drivers/fpga/fpga-region.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/fpga/fpga-region.c b/drivers/fpga/fpga-region.c index c9d065a6961b..b364a929425c 100644 --- a/drivers/fpga/fpga-region.c +++ b/drivers/fpga/fpga-region.c @@ -16,7 +16,7 @@ #include <linux/spinlock.h> static DEFINE_IDA(fpga_region_ida); -static struct class *fpga_region_class; +static const struct class fpga_region_class; struct fpga_region * fpga_region_class_find(struct device *start, const void *data, @@ -24,7 +24,7 @@ fpga_region_class_find(struct device *start, const void *data, { struct device *dev; - dev = class_find_device(fpga_region_class, start, data, match); + dev = class_find_device(&fpga_region_class, start, data, match); if (!dev) return NULL; @@ -217,7 +217,7 @@ fpga_region_register_full(struct device *parent, const struct fpga_region_info * mutex_init(®ion->mutex); INIT_LIST_HEAD(®ion->bridge_list); - region->dev.class = fpga_region_class; + region->dev.class = &fpga_region_class; region->dev.parent = parent; region->dev.of_node = parent->of_node; region->dev.id = id; @@ -288,6 +288,12 @@ static void fpga_region_dev_release(struct device *dev) kfree(region); } +static const struct class fpga_region_class = { + .name = "fpga_region", + .dev_groups = fpga_region_groups, + .dev_release = fpga_region_dev_release, +}; + /** * fpga_region_init - creates the fpga_region class. * @@ -295,19 +301,12 @@ static void fpga_region_dev_release(struct device *dev) */ static int __init fpga_region_init(void) { - fpga_region_class = class_create("fpga_region"); - if (IS_ERR(fpga_region_class)) - return PTR_ERR(fpga_region_class); - - fpga_region_class->dev_groups = fpga_region_groups; - fpga_region_class->dev_release = fpga_region_dev_release; - - return 0; + return class_register(&fpga_region_class); } static void __exit fpga_region_exit(void) { - class_destroy(fpga_region_class); + class_unregister(&fpga_region_class); ida_destroy(&fpga_region_ida); } |