chips: Removed unnecessary enable nvic

Author: FarhadGUL06

chips/stm32u5xx/src/gpio.rs

@@ -2,7 +2,6 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 // Copyright OxidOS Automotive 2026.
 
-use cortexm33;
 use kernel::hil::gpio;
 use kernel::utilities::cells::OptionalCell;
 use kernel::utilities::registers::interfaces::{Readable, Writeable};
@@ -317,10 +316,6 @@ impl<'a> gpio::Interrupt<'a> for Pin<'a> {
             }
             self.exti.unmask_interrupt(line);
         }
-
-        unsafe {
-            cortexm33::nvic::Nvic::new(crate::nvic::EXTI13_IRQ).enable(); // Enable EXTI13 IRQ here
-        }
     }
 
     fn disable_interrupts(&self) {

chips/stm32u5xx/src/tim.rs

@@ -2,7 +2,6 @@
 // SPDX-License-Identifier: Apache-2.0 OR MIT
 // Copyright OxidOS Automotive 2026.
 
-use cortexm33;
 use kernel::hil::time::Time;
 use kernel::hil::time::{self, Ticks, Ticks32};
 use kernel::utilities::cells::OptionalCell;
@@ -123,10 +122,6 @@ impl<'a> Tim2<'a> {
 
         self.registers.arr.set(0xFFFFFFFF);
         self.registers.cr1.modify(CR1::CEN::SET);
-
-        unsafe {
-            cortexm33::nvic::Nvic::new(crate::nvic::TIM2_IRQ).enable();
-        }
     }
 }
 

chips/stm32u5xx/src/usart.rs

@@ -3,7 +3,6 @@
 // Copyright OxidOS Automotive 2026.
 
 use core::cell::Cell;
-use cortexm33;
 use kernel::hil::uart::{self};
 use kernel::utilities::cells::OptionalCell;
 use kernel::utilities::cells::TakeCell;
@@ -240,11 +239,6 @@ impl uart::Configure for Usart<'_> {
         // Enable transmitter, receiver, and USART
         regs.cr1.write(CR1::TE::SET + CR1::RE::SET + CR1::UE::SET);
 
-        unsafe {
-            cortexm33::nvic::Nvic::new(crate::nvic::USART1_IRQ).enable();
-            cortexm33::nvic::Nvic::new(crate::nvic::GPDMA1_CH0_IRQ).enable();
-            cortexm33::nvic::Nvic::new(crate::nvic::GPDMA1_CH1_IRQ).enable();
-        }
         Ok(())
     }
 }