[PATCH 05/10] rust: driver: centralize device ID handling
Gary Guo
gary at garyguo.net
Thu Jun 18 10:03:42 PDT 2026
Move the `IdArray` creation from individual buses to be handled by shared
code in `device_id.rs`.
Signed-off-by: Gary Guo <gary at garyguo.net>
---
rust/kernel/acpi.rs | 10 ++--------
rust/kernel/auxiliary.rs | 10 ++--------
rust/kernel/device_id.rs | 31 ++++++++++++++++++++++++++++++-
rust/kernel/i2c.rs | 10 ++--------
rust/kernel/net/phy.rs | 10 ++++------
rust/kernel/of.rs | 10 ++--------
rust/kernel/pci.rs | 10 ++--------
rust/kernel/usb.rs | 10 ++--------
8 files changed, 46 insertions(+), 55 deletions(-)
diff --git a/rust/kernel/acpi.rs b/rust/kernel/acpi.rs
index 9b8efa623130..315f2f2af446 100644
--- a/rust/kernel/acpi.rs
+++ b/rust/kernel/acpi.rs
@@ -53,13 +53,7 @@ pub const fn new(id: &'static CStr) -> Self {
/// Create an ACPI `IdTable` with an "alias" for modpost.
#[macro_export]
macro_rules! acpi_device_table {
- ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {
- const $table_name: $crate::device_id::IdArray<
- $crate::acpi::DeviceId,
- $id_info_type,
- { $table_data.len() },
- > = $crate::device_id::IdArray::new($table_data);
-
- $crate::module_device_table!("acpi", $module_table_name, $table_name);
+ ($($tt:tt)*) => {
+ $crate::module_device_table!("acpi", $crate::acpi::DeviceId, $($tt)*);
};
}
diff --git a/rust/kernel/auxiliary.rs b/rust/kernel/auxiliary.rs
index c42928d5a239..59787c9bff26 100644
--- a/rust/kernel/auxiliary.rs
+++ b/rust/kernel/auxiliary.rs
@@ -181,14 +181,8 @@ fn index(&self) -> usize {
/// Create a auxiliary `IdTable` with its alias for modpost.
#[macro_export]
macro_rules! auxiliary_device_table {
- ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {
- const $table_name: $crate::device_id::IdArray<
- $crate::auxiliary::DeviceId,
- $id_info_type,
- { $table_data.len() },
- > = $crate::device_id::IdArray::new($table_data);
-
- $crate::module_device_table!("auxiliary", $module_table_name, $table_name);
+ ($($tt:tt)*) => {
+ $crate::module_device_table!("auxiliary", $crate::auxiliary::DeviceId, $($tt)*);
};
}
diff --git a/rust/kernel/device_id.rs b/rust/kernel/device_id.rs
index eeef3f5e7b63..0239f89d5f69 100644
--- a/rust/kernel/device_id.rs
+++ b/rust/kernel/device_id.rs
@@ -175,7 +175,36 @@ fn info(&self, index: usize) -> &U {
/// Create device table alias for modpost.
#[macro_export]
macro_rules! module_device_table {
- ($table_type: literal, $module_table_name:ident, $table_name:ident) => {
+ (
+ $table_type: literal, $device_id_ty: ty,
+ $table_name: ident, $module_table_name: ident, $id_info_type: ty,
+ [$(($id: expr, $info:expr $(,)?)),* $(,)?]
+ ) => {
+ const $table_name: $crate::device_id::IdArray<
+ $device_id_ty,
+ $id_info_type,
+ { <[$device_id_ty]>::len(&[$($id,)*]) },
+ > = $crate::device_id::IdArray::new([$(($id, $info),)*]);
+
+ $crate::module_device_table!($table_type, $module_table_name, $table_name);
+ };
+
+ // Case for no ID info.
+ (
+ $table_type: literal, $device_id_ty: ty,
+ $table_name: ident, $module_table_name: ident, @none,
+ [$($id: expr),* $(,)?]
+ ) => {
+ const $table_name: $crate::device_id::IdArray<
+ $device_id_ty,
+ (),
+ { <[$device_id_ty]>::len(&[$($id,)*]) },
+ > = $crate::device_id::IdArray::new_without_index([$($id),*]);
+
+ $crate::module_device_table!($table_type, $module_table_name, $table_name);
+ };
+
+ ($table_type: literal, $module_table_name: ident, $table_name:ident) => {
#[rustfmt::skip]
#[export_name =
concat!("__mod_device_table__", line!(),
diff --git a/rust/kernel/i2c.rs b/rust/kernel/i2c.rs
index 7655d61daac8..a7d9b88ae616 100644
--- a/rust/kernel/i2c.rs
+++ b/rust/kernel/i2c.rs
@@ -77,14 +77,8 @@ fn index(&self) -> usize {
/// Create a I2C `IdTable` with its alias for modpost.
#[macro_export]
macro_rules! i2c_device_table {
- ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {
- const $table_name: $crate::device_id::IdArray<
- $crate::i2c::DeviceId,
- $id_info_type,
- { $table_data.len() },
- > = $crate::device_id::IdArray::new($table_data);
-
- $crate::module_device_table!("i2c", $module_table_name, $table_name);
+ ($($tt:tt)*) => {
+ $crate::module_device_table!("i2c", $crate::i2c::DeviceId, $($tt)*);
};
}
diff --git a/rust/kernel/net/phy.rs b/rust/kernel/net/phy.rs
index 965ecca7d55f..166572861e61 100644
--- a/rust/kernel/net/phy.rs
+++ b/rust/kernel/net/phy.rs
@@ -809,12 +809,10 @@ macro_rules! module_phy_driver {
};
(@device_table [$($dev:expr),+]) => {
- const N: usize = $crate::module_phy_driver!(@count_devices $($dev),+);
-
- const TABLE: $crate::device_id::IdArray<$crate::net::phy::DeviceId, (), N> =
- $crate::device_id::IdArray::new_without_index([ $($dev),+, ]);
-
- $crate::module_device_table!("mdio", phydev, TABLE);
+ $crate::module_device_table!(
+ "mdio", $crate::net::phy::DeviceId,
+ phydev, TABLE, @none, [$($dev),+]
+ );
};
(drivers: [$($driver:ident),+ $(,)?], device_table: [$($dev:expr),+ $(,)?], $($f:tt)*) => {
diff --git a/rust/kernel/of.rs b/rust/kernel/of.rs
index 58b20c367f99..35aa6d36d309 100644
--- a/rust/kernel/of.rs
+++ b/rust/kernel/of.rs
@@ -53,13 +53,7 @@ pub const fn new(compatible: &'static CStr) -> Self {
/// Create an OF `IdTable` with an "alias" for modpost.
#[macro_export]
macro_rules! of_device_table {
- ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {
- const $table_name: $crate::device_id::IdArray<
- $crate::of::DeviceId,
- $id_info_type,
- { $table_data.len() },
- > = $crate::device_id::IdArray::new($table_data);
-
- $crate::module_device_table!("of", $module_table_name, $table_name);
+ ($($tt:tt)*) => {
+ $crate::module_device_table!("of", $crate::of::DeviceId, $($tt)*);
};
}
diff --git a/rust/kernel/pci.rs b/rust/kernel/pci.rs
index 0e055e4df99e..34e07a53244d 100644
--- a/rust/kernel/pci.rs
+++ b/rust/kernel/pci.rs
@@ -245,14 +245,8 @@ fn index(&self) -> usize {
/// Create a PCI `IdTable` with its alias for modpost.
#[macro_export]
macro_rules! pci_device_table {
- ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {
- const $table_name: $crate::device_id::IdArray<
- $crate::pci::DeviceId,
- $id_info_type,
- { $table_data.len() },
- > = $crate::device_id::IdArray::new($table_data);
-
- $crate::module_device_table!("pci", $module_table_name, $table_name);
+ ($($tt:tt)*) => {
+ $crate::module_device_table!("pci", $crate::pci::DeviceId, $($tt)*);
};
}
diff --git a/rust/kernel/usb.rs b/rust/kernel/usb.rs
index 7aff0c82d0af..154919ee1e19 100644
--- a/rust/kernel/usb.rs
+++ b/rust/kernel/usb.rs
@@ -254,14 +254,8 @@ fn index(&self) -> usize {
/// Create a USB `IdTable` with its alias for modpost.
#[macro_export]
macro_rules! usb_device_table {
- ($table_name:ident, $module_table_name:ident, $id_info_type: ty, $table_data: expr) => {
- const $table_name: $crate::device_id::IdArray<
- $crate::usb::DeviceId,
- $id_info_type,
- { $table_data.len() },
- > = $crate::device_id::IdArray::new($table_data);
-
- $crate::module_device_table!("usb", $module_table_name, $table_name);
+ ($($tt:tt)*) => {
+ $crate::module_device_table!("usb", $crate::usb::DeviceId, $($tt)*);
};
}
--
2.54.0
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