Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
samples: rust: pci: reset pci-testdev in unbind()
Reset the pci-testdev when the driver is unbound from its device.
Link: https://lore.kernel.org/r/20250621195118.124245-9-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
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samples/rust/rust_driver_pci.rs
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samples/rust/rust_driver_pci.rs
···
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type Bar0 = pci::Bar<{ Regs::END }>;
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-
#[derive(Debug)]
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#[derive(Copy, Clone, Debug)]
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struct TestIndex(u8);
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impl TestIndex {
···
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pdev: ARef<pci::Device>,
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#[pin]
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bar: Devres<Bar0>,
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index: TestIndex,
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}
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kernel::pci_device_table!(
···
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try_pin_init!(Self {
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pdev: pdev.into(),
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bar <- pdev.iomap_region_sized::<{ Regs::END }>(0, c_str!("rust_driver_pci")),
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index: *info,
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}),
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GFP_KERNEL,
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)?;
···
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);
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Ok(drvdata)
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}
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fn unbind(pdev: &pci::Device<Core>, this: Pin<&Self>) {
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if let Ok(bar) = this.bar.access(pdev.as_ref()) {
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// Reset pci-testdev by writing a new test index.
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bar.write8(this.index.0, Regs::TEST);
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}
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}
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}
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