Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
samples: rust: pci: take advantage of Devres::access()
For the I/O operations executed from the probe() method, take advantage
of Devres::access(), avoiding the atomic check and RCU read lock required
otherwise entirely.
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Acked-by: Boqun Feng <boqun.feng@gmail.com>
Reviewed-by: Joel Fernandes <joelagnelf@nvidia.com>
Link: https://lore.kernel.org/r/20250428140137.468709-4-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
+6
-6
+6
-6
samples/rust/rust_driver_pci.rs
+6
-6
samples/rust/rust_driver_pci.rs
···
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GFP_KERNEL,
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)?;
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-
let res = drvdata
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.bar
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.try_access_with(|b| Self::testdev(info, b))
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.ok_or(ENXIO)??;
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-
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dev_info!(pdev.as_ref(), "pci-testdev data-match count: {}\n", res);
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+
let bar = drvdata.bar.access(pdev.as_ref())?;
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dev_info!(
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+
pdev.as_ref(),
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"pci-testdev data-match count: {}\n",
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Self::testdev(info, bar)?
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+
);
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Ok(drvdata.into())
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}