This is a note to let you know that I've just added the patch titled
rust: phy: implement `Send` for `Registration`
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
rust-phy-implement-send-for-registration.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From df70d04d56975f527b9c965322cf56e245909071 Mon Sep 17 00:00:00 2001
From: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>
Date: Thu, 28 Mar 2024 16:54:53 -0300
Subject: rust: phy: implement `Send` for `Registration`
From: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>
commit df70d04d56975f527b9c965322cf56e245909071 upstream.
In preparation for requiring `Send` for `Module` implementations in the
next patch.
Cc: FUJITA Tomonori <fujita.tomonori@xxxxxxxxx>
Cc: Trevor Gross <tmgross@xxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx
Signed-off-by: Wedson Almeida Filho <walmeida@xxxxxxxxxxxxx>
Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240328195457.225001-2-wedsonaf@xxxxxxxxx
Signed-off-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
rust/kernel/net/phy.rs | 4 ++++
1 file changed, 4 insertions(+)
--- a/rust/kernel/net/phy.rs
+++ b/rust/kernel/net/phy.rs
@@ -640,6 +640,10 @@ pub struct Registration {
drivers: Pin<&'static mut [DriverVTable]>,
}
+// SAFETY: The only action allowed in a `Registration` instance is dropping it, which is safe to do
+// from any thread because `phy_drivers_unregister` can be called from any thread context.
+unsafe impl Send for Registration {}
+
impl Registration {
/// Registers a PHY driver.
pub fn register(
Patches currently in stable-queue which might be from walmeida@xxxxxxxxxxxxx are
queue-6.8/rust-kernel-require-send-for-module-implementations.patch
queue-6.8/rust-phy-implement-send-for-registration.patch
