diff options
| author | Greg Kroah-Hartman | 2023-10-24 13:49:04 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-10-25 11:09:04 +0200 |
| commit | cf3c415d7d2c21288fc85d7ed5da9b9af36d0de9 (patch) | |
| tree | 31fcace2d71d332f25b25e7e72f069b3a78720a2 /drivers/misc | |
| parent | d223192634ffac3182cc38fda3cca0a8814276ea (diff) | |
ocxl: make ocxl_class constant
Now that the driver core allows for struct class to be in read-only
memory, we should make all 'class' structures declared at build time
placing them into read-only memory, instead of having to be dynamically
allocated at runtime.
Cc: Andrew Donnellan <ajd@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: linuxppc-dev@lists.ozlabs.org
Acked-by: Frederic Barrat <fbarrat@linux.ibm.com>
Link: https://lore.kernel.org/r/2023102403-squirt-defraud-6c0c@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/ocxl/file.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/drivers/misc/ocxl/file.c b/drivers/misc/ocxl/file.c index 6e63f060e4cc..ac69b7f361f5 100644 --- a/drivers/misc/ocxl/file.c +++ b/drivers/misc/ocxl/file.c @@ -14,7 +14,6 @@ #define OCXL_NUM_MINORS 256 /* Total to reserve */ static dev_t ocxl_dev; -static struct class *ocxl_class; static DEFINE_MUTEX(minors_idr_lock); static struct idr minors_idr; @@ -509,6 +508,16 @@ static void ocxl_file_make_invisible(struct ocxl_file_info *info) cdev_del(&info->cdev); } +static char *ocxl_devnode(const struct device *dev, umode_t *mode) +{ + return kasprintf(GFP_KERNEL, "ocxl/%s", dev_name(dev)); +} + +static const struct class ocxl_class = { + .name = "ocxl", + .devnode = ocxl_devnode, +}; + int ocxl_file_register_afu(struct ocxl_afu *afu) { int minor; @@ -529,7 +538,7 @@ int ocxl_file_register_afu(struct ocxl_afu *afu) info->dev.parent = &fn->dev; info->dev.devt = MKDEV(MAJOR(ocxl_dev), minor); - info->dev.class = ocxl_class; + info->dev.class = &ocxl_class; info->dev.release = info_release; info->afu = afu; @@ -584,11 +593,6 @@ void ocxl_file_unregister_afu(struct ocxl_afu *afu) device_unregister(&info->dev); } -static char *ocxl_devnode(const struct device *dev, umode_t *mode) -{ - return kasprintf(GFP_KERNEL, "ocxl/%s", dev_name(dev)); -} - int ocxl_file_init(void) { int rc; @@ -601,20 +605,19 @@ int ocxl_file_init(void) return rc; } - ocxl_class = class_create("ocxl"); - if (IS_ERR(ocxl_class)) { + rc = class_register(&ocxl_class); + if (rc) { pr_err("Unable to create ocxl class\n"); unregister_chrdev_region(ocxl_dev, OCXL_NUM_MINORS); - return PTR_ERR(ocxl_class); + return rc; } - ocxl_class->devnode = ocxl_devnode; return 0; } void ocxl_file_exit(void) { - class_destroy(ocxl_class); + class_unregister(&ocxl_class); unregister_chrdev_region(ocxl_dev, OCXL_NUM_MINORS); idr_destroy(&minors_idr); } |