Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>

We now use AK::Error and AK::ErrorOr<T> in both kernel and userspace!
This was a slightly tedious refactoring that took a long time, so it's
not unlikely that some bugs crept in.

Nevertheless, it does pass basic functionality testing, and it's just
real nice to finally see the same pattern in all contexts. :^)

1 files changed, 2 insertions, 2 deletions

diff --git a/Kernel/Memory/RingBuffer.cpp b/Kernel/Memory/RingBuffer.cpp
index 06d2da02ff..a807d0aa93 100644
--- a/Kernel/Memory/RingBuffer.cpp
+++ b/Kernel/Memory/RingBuffer.cpp
@@ -29,7 +29,7 @@ bool RingBuffer::copy_data_in(const UserOrKernelBuffer& buffer, size_t offset, s
     return true;
 }
 
-KResultOr<size_t> RingBuffer::copy_data_out(size_t size, UserOrKernelBuffer& buffer) const
+ErrorOr<size_t> RingBuffer::copy_data_out(size_t size, UserOrKernelBuffer& buffer) const
 {
     auto start = m_start_of_used % m_capacity_in_bytes;
     auto num_bytes = min(min(m_num_used_bytes, size), m_capacity_in_bytes - start);
@@ -37,7 +37,7 @@ KResultOr<size_t> RingBuffer::copy_data_out(size_t size, UserOrKernelBuffer& buf
     return num_bytes;
 }
 
-KResultOr<PhysicalAddress> RingBuffer::reserve_space(size_t size)
+ErrorOr<PhysicalAddress> RingBuffer::reserve_space(size_t size)
 {
     if (m_capacity_in_bytes < m_num_used_bytes + size)
         return ENOSPC;