diff options
| author | Danilo Krummrich <dakr@kernel.org> | 2026-05-25 22:20:54 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-05-27 16:22:41 +0200 |
| commit | a89111c00b68ff78cae7981a67601571e365d13b (patch) | |
| tree | d58bac9f3ea148fcc93b15d5380239a93a950576 /rust/kernel | |
| parent | 0b9a29c3a4e2a1f0d0b73ad4c4a4175212bacf21 (diff) | |
rust: platform: implement Sync for Device<Bound>
Implement Sync for Device<Bound> in addition to Device<Normal>.
Device<Bound> uses the same underlying struct platform_device as
Device<Normal>; Bound is a zero-sized type-state marker that does not
affect thread safety.
This is needed for drivers to store &'bound platform::Device<Bound> in
their private data while remaining Send.
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Gary Guo <gary@garyguo.net>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Uwe Kleine-König <ukleinek@kernel.org>
Tested-by: Dirk Behme <dirk.behme@de.bosch.com>
Link: https://patch.msgid.link/20260525202921.124698-8-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'rust/kernel')
| -rw-r--r-- | rust/kernel/platform.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/rust/kernel/platform.rs b/rust/kernel/platform.rs index 975b22ffe5db..106a5ed57ea6 100644 --- a/rust/kernel/platform.rs +++ b/rust/kernel/platform.rs @@ -565,3 +565,7 @@ unsafe impl Send for Device {} // SAFETY: `Device` can be shared among threads because all methods of `Device` // (i.e. `Device<Normal>) are thread safe. unsafe impl Sync for Device {} + +// SAFETY: Same as `Device<Normal>` -- the underlying `struct platform_device` is the same; +// `Bound` is a zero-sized type-state marker that does not affect thread safety. +unsafe impl Sync for Device<device::Bound> {} |