There are 4 debug files created under /proc/net/[Devname]. Devname could be wlan0 initially, however it could be renamed later to e.g. enx00e04c000002. This will cause problem during debug file teardown since it uses netdev->name which is no longer wlan0. To solve this problem, add a notifier to handle device renaming. Also, due to this is purely for debuging as files are created read only, move this to debugfs like other NIC drivers do instead of using procfs. Reported-by: Zheyu Ma <zheyuma97@xxxxxxxxx> Tested-by: Zheyu Ma <zheyuma97@xxxxxxxxx> Signed-off-by: Tong Zhang <ztong0001@xxxxxxxxx> v2: break down patch and fix pointer check Tong Zhang (3): staging: rtl8192u: move debug stuff to its own file staging: rtl8192u: move debug files to debugfs staging: rtl8192u: fix rmmod warn when wlan0 is renamed drivers/staging/rtl8192u/Makefile | 1 + drivers/staging/rtl8192u/r8192U.h | 6 + drivers/staging/rtl8192u/r8192U_core.c | 223 ++++------------------ drivers/staging/rtl8192u/r8192U_debugfs.c | 188 ++++++++++++++++++ 4 files changed, 235 insertions(+), 183 deletions(-) create mode 100644 drivers/staging/rtl8192u/r8192U_debugfs.c -- 2.25.1
