[PATCH v1 1/2] soc: qcom: rmtfs-mem: Add class to enable uevents

[Evan Green]

Currently the qcom_rmtfs_memN devices are entirely invisible to the udev world.
Add a class to the rmtfs device so that uevents fire when the device is added.

Signed-off-by: Evan Green <evgr...@chromium.org>
---

 drivers/soc/qcom/rmtfs_mem.c | 23 ++++++++++++++++++-----
 1 file changed, 18 insertions(+), 5 deletions(-)

diff --git a/drivers/soc/qcom/rmtfs_mem.c b/drivers/soc/qcom/rmtfs_mem.c
index 97bb5989aa211..0bf800ee2a978 100644
--- a/drivers/soc/qcom/rmtfs_mem.c
+++ b/drivers/soc/qcom/rmtfs_mem.c
@@ -132,6 +132,11 @@ static int qcom_rmtfs_mem_release(struct inode *inode, 
struct file *filp)
        return 0;
 }
 
+static struct class rmtfs_class = {
+       .owner          = THIS_MODULE,
+       .name           = "rmtfs",
+};
+
 static const struct file_operations qcom_rmtfs_mem_fops = {
        .owner = THIS_MODULE,
        .open = qcom_rmtfs_mem_open,
@@ -173,9 +178,15 @@ static int qcom_rmtfs_mem_probe(struct platform_device 
*pdev)
 
        }
 
+       ret  = class_register(&rmtfs_class);
+       if (ret)
+               return ret;
+
        rmtfs_mem = kzalloc(sizeof(*rmtfs_mem), GFP_KERNEL);
-       if (!rmtfs_mem)
-               return -ENOMEM;
+       if (!rmtfs_mem) {
+               ret = -ENOMEM;
+               goto unregister_class;
+       }
 
        rmtfs_mem->addr = rmem->base;
        rmtfs_mem->client_id = client_id;
@@ -199,8 +210,8 @@ static int qcom_rmtfs_mem_probe(struct platform_device 
*pdev)
 
        dev_set_name(&rmtfs_mem->dev, "qcom_rmtfs_mem%d", client_id);
        rmtfs_mem->dev.id = client_id;
+       rmtfs_mem->dev.class = &rmtfs_class;
        rmtfs_mem->dev.devt = MKDEV(MAJOR(qcom_rmtfs_mem_major), client_id);
-
        ret = cdev_device_add(&rmtfs_mem->cdev, &rmtfs_mem->dev);
        if (ret) {
                dev_err(&pdev->dev, "failed to add cdev: %d\n", ret);
@@ -235,11 +246,13 @@ static int qcom_rmtfs_mem_probe(struct platform_device 
*pdev)
 
        return 0;
 
+
 remove_cdev:
        cdev_device_del(&rmtfs_mem->cdev, &rmtfs_mem->dev);
 put_device:
        put_device(&rmtfs_mem->dev);
-
+unregister_class:
+       class_unregister(&rmtfs_class);
        return ret;
 }
 
@@ -258,7 +271,7 @@ static int qcom_rmtfs_mem_remove(struct platform_device 
*pdev)
 
        cdev_device_del(&rmtfs_mem->cdev, &rmtfs_mem->dev);
        put_device(&rmtfs_mem->dev);
-
+       class_unregister(&rmtfs_class);
        return 0;
 }
 
-- 
2.18.1