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Date: Mon, 2 Jul 2012 15:15:36 +0300
From: Maya Erez <merez@...eaurora.org>
To: linux-mmc@...r.kernel.org
Cc: linux-arm-msm@...r.kernel.org, Maya Erez <merez@...eaurora.org>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v4 1/2] mmc: card: Move MMC specific attributes to mmc sub-directory
Separate MMC specific attributes from general block device
attributes and move them from the /sys/block/<BLOCK_DEV> directory
to /sys/block/<BLOCK_DEV>/mmc directory
Signed-off-by: Maya Erez <merez@...eaurora.org>
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index c965f2b..c23034d 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -114,6 +114,9 @@ struct mmc_blk_data {
struct device_attribute force_ro;
struct device_attribute power_ro_lock;
int area_type;
+
+ struct kobject kobj;
+ struct kobj_type kobj_type;
};
static DEFINE_MUTEX(open_lock);
@@ -185,6 +188,51 @@ static void mmc_blk_put(struct mmc_blk_data *md)
mutex_unlock(&open_lock);
}
+static ssize_t mmc_blk_attr_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct device_attribute *dev_attr;
+ struct mmc_blk_data *md;
+ ssize_t ret;
+
+ dev_attr = container_of(attr, struct device_attribute, attr);
+ if (!dev_attr->show)
+ return -EIO;
+
+ md = container_of(kobj, struct mmc_blk_data, kobj);
+ if (!md || &md->kobj != kobj)
+ return -EINVAL;
+
+ ret = dev_attr->show(disk_to_dev(md->disk), dev_attr, buf);
+
+ return ret;
+}
+
+static ssize_t mmc_blk_attr_store(struct kobject *kobj, struct attribute *attr,
+ const char *buf, size_t count)
+{
+ struct device_attribute *dev_attr;
+ struct mmc_blk_data *md;
+ ssize_t ret;
+
+ dev_attr = container_of(attr, struct device_attribute, attr);
+ if (!dev_attr->store)
+ return -EIO;
+
+ md = container_of(kobj, struct mmc_blk_data, kobj);
+ if (!md || &md->kobj != kobj)
+ return -EINVAL;
+
+ ret = dev_attr->store(disk_to_dev(md->disk), dev_attr, buf, count);
+
+ return ret;
+}
+
+static const struct sysfs_ops mmc_blk_sysfs_ops = {
+ .show = mmc_blk_attr_show,
+ .store = mmc_blk_attr_store,
+};
+
static ssize_t power_ro_lock_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -2004,14 +2052,15 @@ static void mmc_blk_remove_req(struct mmc_blk_data *md)
if (md) {
card = md->queue.card;
if (md->disk->flags & GENHD_FL_UP) {
- device_remove_file(disk_to_dev(md->disk), &md->force_ro);
+ sysfs_remove_file(&md->kobj, &md->force_ro.attr);
if ((md->area_type & MMC_BLK_DATA_AREA_BOOT) &&
card->ext_csd.boot_ro_lockable)
- device_remove_file(disk_to_dev(md->disk),
- &md->power_ro_lock);
+ sysfs_remove_file(&md->kobj,
+ &md->power_ro_lock.attr);
/* Stop new requests from getting into the queue */
del_gendisk(md->disk);
+ kobject_put(&md->kobj);
}
/* Then flush out any already in there */
@@ -2040,12 +2089,19 @@ static int mmc_add_disk(struct mmc_blk_data *md)
struct mmc_card *card = md->queue.card;
add_disk(md->disk);
+
+ md->kobj_type.sysfs_ops = &mmc_blk_sysfs_ops;
+ ret = kobject_init_and_add(&md->kobj, &md->kobj_type,
+ &disk_to_dev(md->disk)->kobj, "%s", "mmc");
+ if (ret)
+ goto init_kobj_fail;
+
md->force_ro.show = force_ro_show;
md->force_ro.store = force_ro_store;
sysfs_attr_init(&md->force_ro.attr);
md->force_ro.attr.name = "force_ro";
md->force_ro.attr.mode = S_IRUGO | S_IWUSR;
- ret = device_create_file(disk_to_dev(md->disk), &md->force_ro);
+ ret = sysfs_create_file(&md->kobj, &md->force_ro.attr);
if (ret)
goto force_ro_fail;
@@ -2064,16 +2120,17 @@ static int mmc_add_disk(struct mmc_blk_data *md)
md->power_ro_lock.attr.mode = mode;
md->power_ro_lock.attr.name =
"ro_lock_until_next_power_on";
- ret = device_create_file(disk_to_dev(md->disk),
- &md->power_ro_lock);
+ ret = sysfs_create_file(&md->kobj, &md->power_ro_lock.attr);
if (ret)
goto power_ro_lock_fail;
}
return ret;
power_ro_lock_fail:
- device_remove_file(disk_to_dev(md->disk), &md->force_ro);
+ sysfs_remove_file(&md->kobj, &md->force_ro.attr);
force_ro_fail:
+ kobject_put(&md->kobj);
+init_kobj_fail:
del_gendisk(md->disk);
return ret;
--
1.7.3.3
--
Sent by a consultant of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
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