From: Danilo Krummrich <dakr@kernel.org>
Date: Wed, 16 Jul 2025 15:02:48 +0000 (+0200)
Subject: rust: pci: implement the `dma::Device` trait
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8eb698f54736b44a398ca883d0a33f661c12da9d;p=thirdparty%2Fkernel%2Fstable.git

rust: pci: implement the `dma::Device` trait

The PCI bus is potentially capable of performing DMA, hence implement
the `dma:Device` trait for `pci::Device`.

Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250716150354.51081-4-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
---

diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs
index 6a4854cf4bf9..44a2f3d2884a 100644
--- a/rust/kernel/pci.rs
+++ b/rust/kernel/pci.rs
@@ -449,6 +449,8 @@ impl Device<device::Core> {
 kernel::impl_device_context_deref!(unsafe { Device });
 kernel::impl_device_context_into_aref!(Device);
 
+impl crate::dma::Device for Device<device::Core> {}
+
 // SAFETY: Instances of `Device` are always reference-counted.
 unsafe impl crate::types::AlwaysRefCounted for Device {
     fn inc_ref(&self) {