From: Danilo Krummrich <dakr@kernel.org>
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 <dakr@kernel.org>
Subject: [PATCH 8/8] samples: rust: pci: reset pci-testdev in unbind()
Date: Sat, 21 Jun 2025 21:43:34 +0200 [thread overview]
Message-ID: <20250621195118.124245-9-dakr@kernel.org> (raw)
In-Reply-To: <20250621195118.124245-1-dakr@kernel.org>
Reset the pci-testdev when the driver is unbound from its device.
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
---
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 {
type Bar0 = pci::Bar<{ Regs::END }>;
-#[derive(Debug)]
+#[derive(Copy, Clone, Debug)]
struct TestIndex(u8);
impl TestIndex {
@@ -28,6 +28,7 @@ impl TestIndex {
struct SampleDriver {
pdev: ARef<pci::Device>,
bar: Devres<Bar0>,
+ index: TestIndex,
}
kernel::pci_device_table!(
@@ -79,6 +80,7 @@ fn probe(pdev: &pci::Device<Core>, info: &Self::IdInfo) -> Result<Pin<KBox<Self>
Self {
pdev: pdev.into(),
bar,
+ index: *info,
},
GFP_KERNEL,
)?;
@@ -92,6 +94,13 @@ fn probe(pdev: &pci::Device<Core>, info: &Self::IdInfo) -> Result<Pin<KBox<Self>
Ok(drvdata.into())
}
+
+ fn unbind(pdev: &pci::Device<Core>, this: Pin<&Self>) {
+ if let Ok(bar) = this.bar.access(pdev.as_ref()) {
+ // Reset pci-testdev by writing a new test index.
+ bar.write8(this.index.0, Regs::TEST);
+ }
+ }
}
impl Drop for SampleDriver {
--
2.49.0
next prev parent reply other threads:[~2025-06-21 19:52 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-21 19:43 [PATCH 0/8] Device: generic accessors for drvdata + Driver::unbind() Danilo Krummrich
2025-06-21 19:43 ` [PATCH 1/8] rust: device: introduce device::Internal Danilo Krummrich
2025-07-01 9:26 ` Greg KH
2025-07-01 10:41 ` Danilo Krummrich
2025-07-01 12:32 ` Danilo Krummrich
2025-07-03 15:06 ` Greg KH
2025-06-21 19:43 ` [PATCH 2/8] rust: device: add drvdata accessors Danilo Krummrich
2025-07-01 9:27 ` Greg KH
2025-07-01 10:58 ` Danilo Krummrich
2025-07-01 13:12 ` Danilo Krummrich
2025-07-05 11:15 ` Benno Lossin
2025-07-05 15:06 ` Danilo Krummrich
2025-07-05 21:38 ` Benno Lossin
2025-07-07 7:46 ` Alexandre Courbot
2025-07-07 9:40 ` Danilo Krummrich
2025-06-21 19:43 ` [PATCH 3/8] rust: platform: use generic device " Danilo Krummrich
2025-06-21 19:43 ` [PATCH 4/8] rust: pci: " Danilo Krummrich
2025-07-01 9:30 ` Greg KH
2025-06-21 19:43 ` [PATCH 5/8] rust: auxiliary: " Danilo Krummrich
2025-06-21 19:43 ` [PATCH 6/8] rust: platform: implement Driver::unbind() Danilo Krummrich
2025-06-21 19:43 ` [PATCH 7/8] rust: pci: " Danilo Krummrich
2025-06-21 19:43 ` Danilo Krummrich [this message]
2025-07-01 9:25 ` [PATCH 0/8] Device: generic accessors for drvdata + Driver::unbind() Greg KH
2025-07-01 10:40 ` Danilo Krummrich
2025-07-07 7:18 ` Alexandre Courbot
2025-07-07 9:26 ` Danilo Krummrich
2025-07-08 22:25 ` Danilo Krummrich
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