diff options
Diffstat (limited to 'drivers/mtd/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 956382cea256..e7ea842ba3db 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -40,6 +40,7 @@ #include <linux/slab.h> #include <linux/reboot.h> #include <linux/leds.h> +#include <linux/debugfs.h> #include <linux/mtd/mtd.h> #include <linux/mtd/partitions.h> @@ -339,7 +340,7 @@ static struct attribute *mtd_attrs[] = { }; ATTRIBUTE_GROUPS(mtd); -static struct device_type mtd_devtype = { +static const struct device_type mtd_devtype = { .name = "mtd", .groups = mtd_groups, .release = mtd_release, @@ -477,6 +478,8 @@ int mtd_pairing_groups(struct mtd_info *mtd) } EXPORT_SYMBOL_GPL(mtd_pairing_groups); +static struct dentry *dfs_dir_mtd; + /** * add_mtd_device - register an MTD device * @mtd: pointer to new MTD device info structure @@ -552,6 +555,14 @@ int add_mtd_device(struct mtd_info *mtd) if (error) goto fail_added; + if (!IS_ERR_OR_NULL(dfs_dir_mtd)) { + mtd->dbg.dfs_dir = debugfs_create_dir(dev_name(&mtd->dev), dfs_dir_mtd); + if (IS_ERR_OR_NULL(mtd->dbg.dfs_dir)) { + pr_debug("mtd device %s won't show data in debugfs\n", + dev_name(&mtd->dev)); + } + } + device_create(&mtd_class, mtd->dev.parent, MTD_DEVT(i) + 1, NULL, "mtd%dro", i); @@ -594,6 +605,8 @@ int del_mtd_device(struct mtd_info *mtd) mutex_lock(&mtd_table_mutex); + debugfs_remove_recursive(mtd->dbg.dfs_dir); + if (idr_find(&mtd_idr, mtd->index) != mtd) { ret = -ENODEV; goto out_error; @@ -1811,6 +1824,8 @@ static int __init init_mtd(void) if (ret) goto out_procfs; + dfs_dir_mtd = debugfs_create_dir("mtd", NULL); + return 0; out_procfs: @@ -1826,6 +1841,7 @@ err_reg: static void __exit cleanup_mtd(void) { + debugfs_remove_recursive(dfs_dir_mtd); cleanup_mtdchar(); if (proc_mtd) remove_proc_entry("mtd", NULL); |