From nobody Thu Oct 9 02:54:17 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 B37A4271456; Sat, 21 Jun 2025 19:52:02 +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=1750535522; cv=none; b=qCo9nT9oayIhc01GCbvHKuDo1ecOLrMz2BmxHiDZaEclmKq/klfTiK227iY1pZYaP+3txLsIqNZdpnLE9VDfCeQCXOej5MAnpv+GR7SAnrmG9IIFFU2Rh0Ao9JCrN5aXpYh0W8U0uwNbmcq9fSD3yaTTwbcDapn5mNqvivkrkpo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750535522; c=relaxed/simple; bh=LVDt14mBWg0lELVOCK+Hfq1+W2xSKm8S17ORApwzmbE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Ky36cVnmpry2As+G4BvBJs2tHSG2OBl0DWez+nNOdSD1eGkYhc2XU8ZAmmbU9JHKNCGK/fbQUX8sZfB9VlIK9Bj1sNb9nCuwowsmRFjhsxaPSZP9mPyl13pEZsqMMuTlw+z3qTmknLsOpYY5ixhw72GrlvLxM5bUs9yQxYalvDw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=SEE+9IDW; 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="SEE+9IDW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8240FC4CEF0; Sat, 21 Jun 2025 19:51:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1750535522; bh=LVDt14mBWg0lELVOCK+Hfq1+W2xSKm8S17ORApwzmbE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SEE+9IDWJ72u5ssBPS95FTKmADMfXy0b452Dg/nJqpTdPRg/21rvdMVni0ofQJb1q RptHe1Wa2D6vKl8ibFPgTC0YILGokbANMno5oiRmTcjPqWuMe9mXnIZBfiB8Xhlim7 /ijPOUCS+gUYGuxM3rioSfnzGNO6gJF/Q2ppl8YhS9zBnbISw/E2y2hPkrUEz7ly3E w9vG4X36rgeTb/04aZrwnjR2QPOp5iEBaA9Udz2eSRujxxr+vlxFruffJh8mYbWo/e 7QzWhrEcgGlCz3CEYzMGPQ3YNyuMuwX20rofpLmRwJrBLEeY4NDburiMx1funvqq6N x6iftko7HcjhA== From: Danilo Krummrich To: gregkh@linuxfoundation.org, rafael@kernel.org, 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, david.m.ertman@intel.com, ira.weiny@intel.com, leon@kernel.org, kwilczynski@kernel.org, bhelgaas@google.com Cc: rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Danilo Krummrich Subject: [PATCH 8/8] samples: rust: pci: reset pci-testdev in unbind() Date: Sat, 21 Jun 2025 21:43:34 +0200 Message-ID: <20250621195118.124245-9-dakr@kernel.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250621195118.124245-1-dakr@kernel.org> References: <20250621195118.124245-1-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" Reset the pci-testdev when the driver is unbound from its device. Signed-off-by: Danilo Krummrich --- samples/rust/rust_driver_pci.rs | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci= .rs index 15147e4401b2..062a242f8874 100644 --- a/samples/rust/rust_driver_pci.rs +++ b/samples/rust/rust_driver_pci.rs @@ -18,7 +18,7 @@ impl Regs { =20 type Bar0 =3D pci::Bar<{ Regs::END }>; =20 -#[derive(Debug)] +#[derive(Copy, Clone, Debug)] struct TestIndex(u8); =20 impl TestIndex { @@ -28,6 +28,7 @@ impl TestIndex { struct SampleDriver { pdev: ARef, bar: Devres, + index: TestIndex, } =20 kernel::pci_device_table!( @@ -79,6 +80,7 @@ fn probe(pdev: &pci::Device, info: &Self::IdInfo) -= > Result Self { pdev: pdev.into(), bar, + index: *info, }, GFP_KERNEL, )?; @@ -92,6 +94,13 @@ fn probe(pdev: &pci::Device, info: &Self::IdInfo) = -> Result =20 Ok(drvdata.into()) } + + fn unbind(pdev: &pci::Device, this: Pin<&Self>) { + if let Ok(bar) =3D this.bar.access(pdev.as_ref()) { + // Reset pci-testdev by writing a new test index. + bar.write8(this.index.0, Regs::TEST); + } + } } =20 impl Drop for SampleDriver { --=20 2.49.0