From nobody Fri Dec 19 14:12:40 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E4D21F3BBA; Sun, 13 Apr 2025 17:38:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744565907; cv=none; b=f8pvyqPBuUPi1/fm76l1/3pZneIxBVUlpeEGni6OWy5DlYwkn5n+vlk53CmP52CiowDPXl1Ih6yyWUbArhxk2+q4x/nvnlNS0MYP8mYLbF8PGUaEabuubUl66iYqxzMruQEjp0g+OZLDiANusni5wYwsZBpSp/E75K9Cddt9Y/U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744565907; c=relaxed/simple; bh=ZfSAqbjxYp7micRXjG3/lmmGYU5+RMEI2eUyLbtRx9k=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZsrPAo/JDtfglgIx//GOdFsWJh4+gw26KBeewpVlvGA0kDXmA3i3I/ge0cooc5bLMAns6xLpDuel53PNgY955UuCvX7/owQCSqgJY8OJOA+oORd9/80U5zrw0DVN4j9DU+sxaY8DDA+ulLHQN4FOvFeRcsxBhS12N1R6VfTloCg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Nh1MglMN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Nh1MglMN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B9473C4CEDD; Sun, 13 Apr 2025 17:38:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744565906; bh=ZfSAqbjxYp7micRXjG3/lmmGYU5+RMEI2eUyLbtRx9k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Nh1MglMNjJW0q03MiD2PsiIL4/2M+aFP/y2YWN2sMmYXzHwYbO1zDw5MEkodleBu0 +4NNJERg3uthu2dNclq/JpaIbivx9tBmIiCXkInlgyHeuIuiAP+XnElP9q1+7DeMX/ 4ZGibik5HzCIF7w7UOeJkPMZNEaesOzlYjLUyO1X7p8bz3LedYoVQWs6eTou2yEQZ7 5VNdezyW7RYsKkz0CdJqh078gWFU9ZfVnWWSJ+GEwj3n+vMTvhKT+Js/WSt6zT123v 20Asbsb8k3Gpr9KR+YujgeBpE7Pc5Bzg/kMI2U09i2M2MhkcEMQ5i2UY1SytaDRw+Y v1DtYJVP1ymHw== From: Danilo Krummrich To: bhelgaas@google.com, kwilczynski@kernel.org, gregkh@linuxfoundation.org, rafael@kernel.org, abdiel.janulgue@gmail.com Cc: ojeda@kernel.org, alex.gaynor@gmail.com, boqun.feng@gmail.com, gary@garyguo.net, bjorn3_gh@protonmail.com, benno.lossin@proton.me, a.hindborg@kernel.org, aliceryhl@google.com, tmgross@umich.edu, daniel.almeida@collabora.com, robin.murphy@arm.com, linux-pci@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Danilo Krummrich Subject: [PATCH v2 5/9] rust: pci: preserve device context in AsRef Date: Sun, 13 Apr 2025 19:37:00 +0200 Message-ID: <20250413173758.12068-6-dakr@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250413173758.12068-1-dakr@kernel.org> References: <20250413173758.12068-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Since device::Device has a generic over its context, preserve this device context in AsRef. For instance, when calling pci::Device the new AsRef implementation returns device::Device. Signed-off-by: Danilo Krummrich Reviewed-by: Benno Lossin --- rust/kernel/pci.rs | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs index 7c6ec05383e0..1234b0c4a403 100644 --- a/rust/kernel/pci.rs +++ b/rust/kernel/pci.rs @@ -360,11 +360,13 @@ fn deref(&self) -> &Self::Target { } } =20 -impl Device { +impl Device { fn as_raw(&self) -> *mut bindings::pci_dev { self.0.get() } +} =20 +impl Device { /// Returns the PCI vendor ID. pub fn vendor_id(&self) -> u16 { // SAFETY: `self.as_raw` is a valid pointer to a `struct pci_dev`. @@ -440,8 +442,8 @@ unsafe fn dec_ref(obj: NonNull) { } } =20 -impl AsRef for Device { - fn as_ref(&self) -> &device::Device { +impl AsRef> for Device { + fn as_ref(&self) -> &device::Device { // SAFETY: By the type invariant of `Self`, `self.as_raw()` is a p= ointer to a valid // `struct pci_dev`. let dev =3D unsafe { addr_of_mut!((*self.as_raw()).dev) }; --=20 2.49.0