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soc: qcom: rmtfs-mem: Add class to enable uevents

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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.

Reviewed-by: Brian Norris <briannorris@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Evan Green <evgreen@chromium.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
This commit is contained in:
Evan Green 2019-01-02 16:02:12 -08:00 committed by Andy Gross
parent 4eccc154b3
commit b4aa93bca9
1 changed files with 21 additions and 5 deletions
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26
drivers/soc/qcom/rmtfs_mem.c
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@ -132,6 +132,11 @@ static int qcom_rmtfs_mem_release(struct inode *inode, struct file *filp)
return 0; return 0;
} }
static struct class rmtfs_class = {
.owner = THIS_MODULE,
.name = "rmtfs",
};
static const struct file_operations qcom_rmtfs_mem_fops = { static const struct file_operations qcom_rmtfs_mem_fops = {
.owner = THIS_MODULE, .owner = THIS_MODULE,
.open = qcom_rmtfs_mem_open, .open = qcom_rmtfs_mem_open,
@ -199,6 +204,7 @@ static int qcom_rmtfs_mem_probe(struct platform_device *pdev)
dev_set_name(&rmtfs_mem->dev, "qcom_rmtfs_mem%d", client_id); dev_set_name(&rmtfs_mem->dev, "qcom_rmtfs_mem%d", client_id);
rmtfs_mem->dev.id = 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); rmtfs_mem->dev.devt = MKDEV(MAJOR(qcom_rmtfs_mem_major), client_id);
ret = cdev_device_add(&rmtfs_mem->cdev, &rmtfs_mem->dev); ret = cdev_device_add(&rmtfs_mem->cdev, &rmtfs_mem->dev);
@ -277,32 +283,42 @@ static struct platform_driver qcom_rmtfs_mem_driver = {
}, },
}; };
static int qcom_rmtfs_mem_init(void) static int __init qcom_rmtfs_mem_init(void)
{ {
int ret; int ret;
ret = class_register(&rmtfs_class);
if (ret)
return ret;
ret = alloc_chrdev_region(&qcom_rmtfs_mem_major, 0, ret = alloc_chrdev_region(&qcom_rmtfs_mem_major, 0,
QCOM_RMTFS_MEM_DEV_MAX, "qcom_rmtfs_mem"); QCOM_RMTFS_MEM_DEV_MAX, "qcom_rmtfs_mem");
if (ret < 0) { if (ret < 0) {
pr_err("qcom_rmtfs_mem: failed to allocate char dev region\n"); pr_err("qcom_rmtfs_mem: failed to allocate char dev region\n");
return ret; goto unregister_class;
} }
ret = platform_driver_register(&qcom_rmtfs_mem_driver); ret = platform_driver_register(&qcom_rmtfs_mem_driver);
if (ret < 0) { if (ret < 0) {
pr_err("qcom_rmtfs_mem: failed to register rmtfs_mem driver\n"); pr_err("qcom_rmtfs_mem: failed to register rmtfs_mem driver\n");
unregister_chrdev_region(qcom_rmtfs_mem_major, goto unregister_chrdev;
QCOM_RMTFS_MEM_DEV_MAX);
} }
return 0;
unregister_chrdev:
unregister_chrdev_region(qcom_rmtfs_mem_major, QCOM_RMTFS_MEM_DEV_MAX);
unregister_class:
class_unregister(&rmtfs_class);
return ret; return ret;
} }
module_init(qcom_rmtfs_mem_init); module_init(qcom_rmtfs_mem_init);
static void qcom_rmtfs_mem_exit(void) static void __exit qcom_rmtfs_mem_exit(void)
{ {
platform_driver_unregister(&qcom_rmtfs_mem_driver); platform_driver_unregister(&qcom_rmtfs_mem_driver);
unregister_chrdev_region(qcom_rmtfs_mem_major, QCOM_RMTFS_MEM_DEV_MAX); unregister_chrdev_region(qcom_rmtfs_mem_major, QCOM_RMTFS_MEM_DEV_MAX);
class_unregister(&rmtfs_class);
} }
module_exit(qcom_rmtfs_mem_exit); module_exit(qcom_rmtfs_mem_exit);