* [PATCH 6.8 134/228] rust: phy: implement `Send` for `Registration`
[not found] <20240430103103.806426847@linuxfoundation.org>
@ 2024-04-30 10:38 ` Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2024-04-30 10:38 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, FUJITA Tomonori, Trevor Gross,
netdev, Wedson Almeida Filho, Alice Ryhl, Miguel Ojeda
6.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Wedson Almeida Filho <walmeida@microsoft.com>
commit df70d04d56975f527b9c965322cf56e245909071 upstream.
In preparation for requiring `Send` for `Module` implementations in the
next patch.
Cc: FUJITA Tomonori <fujita.tomonori@gmail.com>
Cc: Trevor Gross <tmgross@umich.edu>
Cc: netdev@vger.kernel.org
Signed-off-by: Wedson Almeida Filho <walmeida@microsoft.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20240328195457.225001-2-wedsonaf@gmail.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
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(
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