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| author | Danilo Krummrich <dakr@kernel.org> | 2026-05-25 22:20:53 +0200 |
|---|---|---|
| committer | Danilo Krummrich <dakr@kernel.org> | 2026-05-27 16:22:41 +0200 |
| commit | 0b9a29c3a4e2a1f0d0b73ad4c4a4175212bacf21 (patch) | |
| tree | 92ed3c9d18d93f476e80a2ccd506186f17e5aacf /rust | |
| parent | be31fcf5af751815457102575b816a2bd31b4562 (diff) | |
| download | linux-next-history-0b9a29c3a4e2a1f0d0b73ad4c4a4175212bacf21.tar.gz | |
rust: pci: implement Sync for Device<Bound>
Implement Sync for Device<Bound> in addition to Device<Normal>.
Device<Bound> uses the same underlying struct pci_dev 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 pci::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/20260525202921.124698-7-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Diffstat (limited to 'rust')
| -rw-r--r-- | rust/kernel/pci.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs index c743f2abb62f5..d214a861375d7 100644 --- a/rust/kernel/pci.rs +++ b/rust/kernel/pci.rs @@ -528,3 +528,7 @@ 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 pci_dev` is the same; +// `Bound` is a zero-sized type-state marker that does not affect thread safety. +unsafe impl Sync for Device<device::Bound> {} |