diff options
| author |   Luo Jiaxing <luojiaxing@huawei.com> | 2018-12-19 23:56:39 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2019-01-08 21:58:37 -0500 |
| commit | ef63464bcf8feaa793e1aee4d3d186dfd1fff05f (patch) | |
| tree | 25a8cf81ed2b3a26451dc5d7ed60eac97c2602b0 /drivers/scsi/hisi_sas/hisi_sas_main.c | |
| parent | scsi: arcmsr: Update driver version to v1.40.00.10-20181217 (diff) | |
| download | linux-dev-ef63464bcf8feaa793e1aee4d3d186dfd1fff05f.tar.xz linux-dev-ef63464bcf8feaa793e1aee4d3d186dfd1fff05f.zip | |
scsi: hisi_sas: Create root and device debugfs directories
This patch creates root directory at hisi_sas_init() and generates device
directory when we probe device driver.
And we remove the root directory at hisi_sas_exit(), but recursively
delete device directory when we remove device driver.
Signed-off-by: Luo Jiaxing <luojiaxing@huawei.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/hisi_sas/hisi_sas_main.c')
| -rw-r--r-- | drivers/scsi/hisi_sas/hisi_sas_main.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index eed7fc5b3389..919cd3bd746a 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -2457,6 +2457,23 @@ err_out_ha: } EXPORT_SYMBOL_GPL(hisi_sas_probe); +struct dentry *hisi_sas_debugfs_dir; + +void hisi_sas_debugfs_init(struct hisi_hba *hisi_hba) +{ + struct device *dev = hisi_hba->dev; + + hisi_hba->debugfs_dir = debugfs_create_dir(dev_name(dev), + hisi_sas_debugfs_dir); +} +EXPORT_SYMBOL_GPL(hisi_sas_debugfs_init); + +void hisi_sas_debugfs_exit(struct hisi_hba *hisi_hba) +{ + debugfs_remove_recursive(hisi_hba->debugfs_dir); +} +EXPORT_SYMBOL_GPL(hisi_sas_debugfs_exit); + int hisi_sas_remove(struct platform_device *pdev) { struct sas_ha_struct *sha = platform_get_drvdata(pdev); @@ -2475,18 +2492,28 @@ int hisi_sas_remove(struct platform_device *pdev) } EXPORT_SYMBOL_GPL(hisi_sas_remove); +bool hisi_sas_debugfs_enable; +EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable); +module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444); +MODULE_PARM_DESC(hisi_sas_debugfs_enable, "Enable driver debugfs (default disabled)"); + static __init int hisi_sas_init(void) { hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); if (!hisi_sas_stt) return -ENOMEM; + if (hisi_sas_debugfs_enable) + hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL); + return 0; } static __exit void hisi_sas_exit(void) { sas_release_transport(hisi_sas_stt); + + debugfs_remove(hisi_sas_debugfs_dir); } module_init(hisi_sas_init); |