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authorKevin Cernekee <kpc.mtd@gmail.com>2009-04-04 00:00:45 +0400
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-04-04 17:32:39 +0400
commit694bb7fc19c6b87e106f4c85a2707072e2f111a0 (patch)
tree7c5e2f4cfbe89fee0779b8d7d92b51a84a276747 /drivers/mtd
parent1f24b5a8ecbb2a3c7080f418974d40e3ffedb221 (diff)
downloadlinux-694bb7fc19c6b87e106f4c85a2707072e2f111a0.tar.xz
[MTD] driver model updates (part 2)
1) Add more sysfs attributes: flags, size, erasesize, writesize, oobsize, numeraseregions, name 2) Move core_initcall() code into init_mtd(). The original approach does not work if CONFIG_MTD=m . 3) Add device_unregister() in del_mtd_device() so that devices get removed from sysfs as each driver is unloaded. Signed-off-by: Kevin Cernekee <kpc.mtd@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/mtdcore.c111
1 files changed, 90 insertions, 21 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index a88f8bc9a534..89c1e5ddc7c2 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -89,11 +89,89 @@ static ssize_t mtd_type_show(struct device *dev,
return snprintf(buf, PAGE_SIZE, "%s\n", type);
}
-static DEVICE_ATTR(mtd_type, S_IRUGO, mtd_type_show, NULL);
+static DEVICE_ATTR(type, S_IRUGO, mtd_type_show, NULL);
+
+static ssize_t mtd_flags_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "0x%lx\n", (unsigned long)mtd->flags);
+
+}
+static DEVICE_ATTR(flags, S_IRUGO, mtd_flags_show, NULL);
+
+static ssize_t mtd_size_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%llu\n",
+ (unsigned long long)mtd->size);
+
+}
+static DEVICE_ATTR(size, S_IRUGO, mtd_size_show, NULL);
+
+static ssize_t mtd_erasesize_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->erasesize);
+
+}
+static DEVICE_ATTR(erasesize, S_IRUGO, mtd_erasesize_show, NULL);
+
+static ssize_t mtd_writesize_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->writesize);
+
+}
+static DEVICE_ATTR(writesize, S_IRUGO, mtd_writesize_show, NULL);
+
+static ssize_t mtd_oobsize_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%lu\n", (unsigned long)mtd->oobsize);
+
+}
+static DEVICE_ATTR(oobsize, S_IRUGO, mtd_oobsize_show, NULL);
+
+static ssize_t mtd_numeraseregions_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%u\n", mtd->numeraseregions);
+
+}
+static DEVICE_ATTR(numeraseregions, S_IRUGO, mtd_numeraseregions_show,
+ NULL);
+
+static ssize_t mtd_name_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct mtd_info *mtd = dev_to_mtd(dev);
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", mtd->name);
+
+}
+static DEVICE_ATTR(name, S_IRUGO, mtd_name_show, NULL);
static struct attribute *mtd_attrs[] = {
- &dev_attr_mtd_type.attr,
- /* FIXME provide a /proc/mtd superset */
+ &dev_attr_type.attr,
+ &dev_attr_flags.attr,
+ &dev_attr_size.attr,
+ &dev_attr_erasesize.attr,
+ &dev_attr_writesize.attr,
+ &dev_attr_oobsize.attr,
+ &dev_attr_numeraseregions.attr,
+ &dev_attr_name.attr,
NULL,
};
@@ -236,6 +314,8 @@ int del_mtd_device (struct mtd_info *mtd)
} else {
struct mtd_notifier *not;
+ device_unregister(&mtd->dev);
+
/* No need to get a refcount on the module containing
the notifier, since we hold the mtd_table_mutex */
list_for_each_entry(not, &mtd_notifiers, list)
@@ -455,24 +535,6 @@ EXPORT_SYMBOL_GPL(register_mtd_user);
EXPORT_SYMBOL_GPL(unregister_mtd_user);
EXPORT_SYMBOL_GPL(default_mtd_writev);
-static int __init mtd_setup(void)
-{
- mtd_class = class_create(THIS_MODULE, "mtd");
-
- if (IS_ERR(mtd_class)) {
- pr_err("Error creating mtd class.\n");
- return PTR_ERR(mtd_class);
- }
- return 0;
-}
-core_initcall(mtd_setup);
-
-static void __exit mtd_teardown(void)
-{
- class_destroy(mtd_class);
-}
-__exitcall(mtd_teardown);
-
#ifdef CONFIG_PROC_FS
/*====================================================================*/
@@ -528,6 +590,12 @@ done:
static int __init init_mtd(void)
{
+ mtd_class = class_create(THIS_MODULE, "mtd");
+
+ if (IS_ERR(mtd_class)) {
+ pr_err("Error creating mtd class.\n");
+ return PTR_ERR(mtd_class);
+ }
if ((proc_mtd = create_proc_entry( "mtd", 0, NULL )))
proc_mtd->read_proc = mtd_read_proc;
return 0;
@@ -537,6 +605,7 @@ static void __exit cleanup_mtd(void)
{
if (proc_mtd)
remove_proc_entry( "mtd", NULL);
+ class_destroy(mtd_class);
}
module_init(init_mtd);