Fix error detection

1 files changed, 11 insertions, 11 deletions

diff --git a/rust/kernel/perf_event.rs b/rust/kernel/perf_event.rs
index 0326b5868afe..f3bf9a6edb96 100644
--- a/rust/kernel/perf_event.rs
+++ b/rust/kernel/perf_event.rs
@@ -5,6 +5,9 @@
 //!
 //! C header: [`include/linux/perf_event.h`](srctree/include/linux/perf_event.h)
 
+use bindings::MAX_ERRNO;
+
+use crate::error::from_err_ptr;
 use crate::prelude::*;
 use crate::{bindings, task::Task, types::Opaque};
 
@@ -425,18 +428,15 @@ pub fn perf_event_create_kernel_counter(
         return Err(Error::InvalidConfig);
     }
 
-    let signed = isize::from_ne_bytes((raw_perf_event as usize).to_ne_bytes());
-    if signed < 0 {
-        pr_err!("Encountered error during creation of perf event");
-        let error = kernel::error::Error::from_errno(signed as i32);
-        pr_err!("Error: {error:?}");
-        return Err(Error::InvalidConfig);
+    let result = from_err_ptr(raw_perf_event);
+    match result {
+        Err(e) => {
+            pr_err!("Encountered error during creation of perf event");
+            pr_err!("Error: {e:?}");
+            Err(Error::InvalidConfig)
+        }
+        Ok(raw_event) => Ok(PerfEvent { inner: raw_event }),
     }
-    pr_err!("event_ptr:{:?}", raw_perf_event);
-
-    Ok(PerfEvent {
-        inner: raw_perf_event,
-    })
 }
 
 unsafe impl Send for PerfEvent {}