usb: gadget: u_ether: Add auto-cleanup helper for freeing net_device

Browse source

[ Upstream commit 0c0981126b ]

The net_device in the u_ether framework currently requires explicit
calls to unregister and free the device.

Introduce gether_unregister_free_netdev() and the corresponding
auto-cleanup macro. This ensures that if a net_device is registered, it
is properly unregistered and the associated work queue is flushed before
the memory is freed.

This is a preparatory patch to simplify error handling paths in gadget
drivers by removing the need for explicit goto labels for net_device
cleanup.

Signed-off-by: Kuen-Han Tsai <khtsai@google.com>
Link: https://patch.msgid.link/20251230-ncm-refactor-v1-2-793e347bc7a7@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: 56a512a9b4 ("usb: gadget: f_ncm: align net_device lifecycle with bind/unbind")
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Kuen-Han Tsai 2025-12-30 18:13:15 +08:00 • committed by Sasha Levin

parent f222eb16d5

commit ca9ca411bb

2 changed files with 17 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

15

drivers/usb/gadget/function/u_ether.c

View file

2

drivers/usb/gadget/function/u_ether.h

View file