[PULL 46/48] rust: qdev: make reset take a shared reference

[Paolo Bonzini]

Because register reset is within a borrow_mut() call, reset
does not need anymore a mut reference to the PL011State.

Reviewed-by: Zhao Liu <zhao1....@intel.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
 rust/hw/char/pl011/src/device.rs | 4 ++--
 rust/qemu-api/src/qdev.rs        | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/rust/hw/char/pl011/src/device.rs b/rust/hw/char/pl011/src/device.rs
index e916ea11884..fad190a9133 100644
--- a/rust/hw/char/pl011/src/device.rs
+++ b/rust/hw/char/pl011/src/device.rs
@@ -172,7 +172,7 @@ fn vmsd() -> Option<&'static VMStateDescription> {
         Some(&device_class::VMSTATE_PL011)
     }
     const REALIZE: Option<fn(&Self)> = Some(Self::realize);
-    const RESET: Option<fn(&mut Self)> = Some(Self::reset);
+    const RESET: Option<fn(&Self)> = Some(Self::reset);
 }
 
 impl PL011Registers {
@@ -621,7 +621,7 @@ pub fn realize(&self) {
         }
     }
 
-    pub fn reset(&mut self) {
+    pub fn reset(&self) {
         self.regs.borrow_mut().reset();
     }
 
diff --git a/rust/qemu-api/src/qdev.rs b/rust/qemu-api/src/qdev.rs
index 42429903aae..f4c75c752f1 100644
--- a/rust/qemu-api/src/qdev.rs
+++ b/rust/qemu-api/src/qdev.rs
@@ -30,7 +30,7 @@ pub trait DeviceImpl {
     ///
     /// Rust does not yet support the three-phase reset protocol; this is
     /// usually okay for leaf classes.
-    const RESET: Option<fn(&mut Self)> = None;
+    const RESET: Option<fn(&Self)> = None;
 
     /// An array providing the properties that the user can set on the
     /// device.  Not a `const` because referencing statics in constants
-- 
2.48.1