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authorM Chetan Kumar <m.chetan.kumar@linux.intel.com>2021-11-20 21:51:54 +0530
committerDavid S. Miller <davem@davemloft.net>2021-11-22 13:23:08 +0000
commitc4804670026b93f4ebddda30af89fd737bf93931 (patch)
treeb4635f7bdfa40d9dcfdd09357e259bf4e7cd86c1 /include/linux/wwan.h
parenta9c2cf9e93335968e894c16921c151f016fa36c7 (diff)
net: wwan: common debugfs base dir for wwan device
This patch set brings in a common debugfs base directory i.e. /sys/kernel/debugfs/wwan/ in WWAN Subsystem for a WWAN device instance. So that it avoids driver polluting debugfs root with unrelated directories & possible name collusion. Having a common debugfs base directory for WWAN drivers eases user to match control devices with debugfs entries. WWAN Subsystem creates dentry (/sys/kernel/debugfs/wwan) on module load & removes dentry on module unload. When driver registers a new wwan device, dentry (wwanX) is created for WWAN device instance & on driver unregister dentry is removed. New API is introduced to return the wwan device instance dentry so that driver can create debugfs entries under it. Signed-off-by: M Chetan Kumar <m.chetan.kumar@linux.intel.com> Reviewed-by: Loic Poulain <loic.poulain@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/wwan.h')
-rw-r--r--include/linux/wwan.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/wwan.h b/include/linux/wwan.h
index 9fac819f92e3..1646aa3e6779 100644
--- a/include/linux/wwan.h
+++ b/include/linux/wwan.h
@@ -171,4 +171,6 @@ int wwan_register_ops(struct device *parent, const struct wwan_ops *ops,
void wwan_unregister_ops(struct device *parent);
+struct dentry *wwan_get_debugfs_dir(struct device *parent);
+
#endif /* __WWAN_H */