Merge tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updatesk from Greg KH:
 "Here is the big set of driver core updates for 6.15-rc1. Lots of stuff
  happened this development cycle, including:

   - kernfs scaling changes to make it even faster thanks to rcu

   - bin_attribute constify work in many subsystems

   - faux bus minor tweaks for the rust bindings

   - rust binding updates for driver core, pci, and platform busses,
     making more functionaliy available to rust drivers. These are all
     due to people actually trying to use the bindings that were in
     6.14.

   - make Rafael and Danilo full co-maintainers of the driver core
     codebase

   - other minor fixes and updates"

* tag 'driver-core-6.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (52 commits)
  rust: platform: require Send for Driver trait implementers
  rust: pci: require Send for Driver trait implementers
  rust: platform: impl Send + Sync for platform::Device
  rust: pci: impl Send + Sync for pci::Device
  rust: platform: fix unrestricted &mut platform::Device
  rust: pci: fix unrestricted &mut pci::Device
  rust: device: implement device context marker
  rust: pci: use to_result() in enable_device_mem()
  MAINTAINERS: driver core: mark Rafael and Danilo as co-maintainers
  rust/kernel/faux: mark Registration methods inline
  driver core: faux: only create the device if probe() succeeds
  rust/faux: Add missing parent argument to Registration::new()
  rust/faux: Drop #[repr(transparent)] from faux::Registration
  rust: io: fix devres test with new io accessor functions
  rust: io: rename `io::Io` accessors
  kernfs: Move dput() outside of the RCU section.
  efi: rci2: mark bin_attribute as __ro_after_init
  rapidio: constify 'struct bin_attribute'
  firmware: qemu_fw_cfg: constify 'struct bin_attribute'
  powerpc/perf/hv-24x7: Constify 'struct bin_attribute'
  ...

4 files changed, 22 insertions, 19 deletions

diff --git a/samples/rust/rust_dma.rs b/samples/rust/rust_dma.rs
index 908acd34b8db..874c2c964afa 100644
--- a/samples/rust/rust_dma.rs
+++ b/samples/rust/rust_dma.rs
@@ -4,10 +4,10 @@
 //!
 //! To make this driver probe, QEMU must be run with `-device pci-testdev`.
 
-use kernel::{bindings, dma::CoherentAllocation, pci, prelude::*};
+use kernel::{bindings, device::Core, dma::CoherentAllocation, pci, prelude::*, types::ARef};
 
 struct DmaSampleDriver {
-    pdev: pci::Device,
+    pdev: ARef<pci::Device>,
     ca: CoherentAllocation<MyStruct>,
 }
 
@@ -48,7 +48,7 @@ impl pci::Driver for DmaSampleDriver {
     type IdInfo = ();
     const ID_TABLE: pci::IdTable<Self::IdInfo> = &PCI_TABLE;
 
-    fn probe(pdev: &mut pci::Device, _info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
+    fn probe(pdev: &pci::Device<Core>, _info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
         dev_info!(pdev.as_ref(), "Probe DMA test driver.\n");
 
         let ca: CoherentAllocation<MyStruct> =
@@ -64,7 +64,7 @@ impl pci::Driver for DmaSampleDriver {
 
         let drvdata = KBox::new(
             Self {
-                pdev: pdev.clone(),
+                pdev: pdev.into(),
                 ca,
             },
             GFP_KERNEL,
diff --git a/samples/rust/rust_driver_faux.rs b/samples/rust/rust_driver_faux.rs
index 378bab4b587d..ecc9fd378cbd 100644
--- a/samples/rust/rust_driver_faux.rs
+++ b/samples/rust/rust_driver_faux.rs
@@ -20,7 +20,7 @@ impl Module for SampleModule {
     fn init(_module: &'static ThisModule) -> Result<Self> {
         pr_info!("Initialising Rust Faux Device Sample\n");
 
-        let reg = faux::Registration::new(c_str!("rust-faux-sample-device"))?;
+        let reg = faux::Registration::new(c_str!("rust-faux-sample-device"), None)?;
 
         dev_info!(reg.as_ref(), "Hello from faux device!\n");
 
diff --git a/samples/rust/rust_driver_pci.rs b/samples/rust/rust_driver_pci.rs
index 364a0660a743..2bb260aebc9e 100644
--- a/samples/rust/rust_driver_pci.rs
+++ b/samples/rust/rust_driver_pci.rs
@@ -4,7 +4,7 @@
 //!
 //! To make this driver probe, QEMU must be run with `-device pci-testdev`.
 
-use kernel::{bindings, c_str, devres::Devres, pci, prelude::*};
+use kernel::{bindings, c_str, device::Core, devres::Devres, pci, prelude::*, types::ARef};
 
 struct Regs;
 
@@ -26,7 +26,7 @@ impl TestIndex {
 }
 
 struct SampleDriver {
-    pdev: pci::Device,
+    pdev: ARef<pci::Device>,
     bar: Devres<Bar0>,
 }
 
@@ -43,17 +43,17 @@ kernel::pci_device_table!(
 impl SampleDriver {
     fn testdev(index: &TestIndex, bar: &Bar0) -> Result<u32> {
         // Select the test.
-        bar.writeb(index.0, Regs::TEST);
+        bar.write8(index.0, Regs::TEST);
 
-        let offset = u32::from_le(bar.readl(Regs::OFFSET)) as usize;
-        let data = bar.readb(Regs::DATA);
+        let offset = u32::from_le(bar.read32(Regs::OFFSET)) as usize;
+        let data = bar.read8(Regs::DATA);
 
         // Write `data` to `offset` to increase `count` by one.
         //
-        // Note that we need `try_writeb`, since `offset` can't be checked at compile-time.
-        bar.try_writeb(data, offset)?;
+        // Note that we need `try_write8`, since `offset` can't be checked at compile-time.
+        bar.try_write8(data, offset)?;
 
-        Ok(bar.readl(Regs::COUNT))
+        Ok(bar.read32(Regs::COUNT))
     }
 }
 
@@ -62,7 +62,7 @@ impl pci::Driver for SampleDriver {
 
     const ID_TABLE: pci::IdTable<Self::IdInfo> = &PCI_TABLE;
 
-    fn probe(pdev: &mut pci::Device, info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
+    fn probe(pdev: &pci::Device<Core>, info: &Self::IdInfo) -> Result<Pin<KBox<Self>>> {
         dev_dbg!(
             pdev.as_ref(),
             "Probe Rust PCI driver sample (PCI ID: 0x{:x}, 0x{:x}).\n",
@@ -77,7 +77,7 @@ impl pci::Driver for SampleDriver {
 
         let drvdata = KBox::new(
             Self {
-                pdev: pdev.clone(),
+                pdev: pdev.into(),
                 bar,
             },
             GFP_KERNEL,
diff --git a/samples/rust/rust_driver_platform.rs b/samples/rust/rust_driver_platform.rs
index f7a0f1b29d1d..8b42b3cfb363 100644
--- a/samples/rust/rust_driver_platform.rs
+++ b/samples/rust/rust_driver_platform.rs
@@ -2,10 +2,10 @@
 
 //! Rust Platform driver sample.
 
-use kernel::{c_str, of, platform, prelude::*};
+use kernel::{c_str, device::Core, of, platform, prelude::*, types::ARef};
 
 struct SampleDriver {
-    pdev: platform::Device,
+    pdev: ARef<platform::Device>,
 }
 
 struct Info(u32);
@@ -21,14 +21,17 @@ impl platform::Driver for SampleDriver {
     type IdInfo = Info;
     const OF_ID_TABLE: Option<of::IdTable<Self::IdInfo>> = Some(&OF_TABLE);
 
-    fn probe(pdev: &mut platform::Device, info: Option<&Self::IdInfo>) -> Result<Pin<KBox<Self>>> {
+    fn probe(
+        pdev: &platform::Device<Core>,
+        info: Option<&Self::IdInfo>,
+    ) -> Result<Pin<KBox<Self>>> {
         dev_dbg!(pdev.as_ref(), "Probe Rust Platform driver sample.\n");
 
         if let Some(info) = info {
             dev_info!(pdev.as_ref(), "Probed with info: '{}'.\n", info.0);
         }
 
-        let drvdata = KBox::new(Self { pdev: pdev.clone() }, GFP_KERNEL)?;
+        let drvdata = KBox::new(Self { pdev: pdev.into() }, GFP_KERNEL)?;
 
         Ok(drvdata.into())
     }