interconnect: debugfs: replace writable string helper

debugfs_create_str() is being made read-only because its generic write
path is hard to make safe without adding more locking to the helper.

Convert the interconnect debugfs client src_node and dst_node entries to
local file operations before removing writable string support from
debugfs_create_str().  Protect the string replacement and path lookup with
the existing debugfs_lock.

The old code duplicated the strings under rcu_read_lock(), so it had to use
GFP_ATOMIC.  The local file operations protect src_node and dst_node with
debugfs_lock instead, so the allocation can use GFP_KERNEL.

Signed-off-by: Yichong Chen <chenyichong@uniontech.com>
Link: https://patch.msgid.link/20260807100053.1089834-2-chenyichong@uniontech.com
Signed-off-by: Georgi Djakov <djakov@kernel.org>

0 files changed, 0 insertions, 0 deletions