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, 3 insertions, 3 deletions

diff --git a/Kernel/Bus/PCI/SysFSPCI.cpp b/Kernel/Bus/PCI/SysFSPCI.cpp
index a8fc6e9ddc..ab79bdd4f6 100644
--- a/Kernel/Bus/PCI/SysFSPCI.cpp
+++ b/Kernel/Bus/PCI/SysFSPCI.cpp
@@ -59,19 +59,19 @@ PCIDeviceAttributeSysFSComponent::PCIDeviceAttributeSysFSComponent(String name,
 {
 }
 
-KResultOr<size_t> PCIDeviceAttributeSysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
+ErrorOr<size_t> PCIDeviceAttributeSysFSComponent::read_bytes(off_t offset, size_t count, UserOrKernelBuffer& buffer, OpenFileDescription*) const
 {
     auto blob = TRY(try_to_generate_buffer());
 
     if ((size_t)offset >= blob->size())
-        return KSuccess;
+        return 0;
 
     ssize_t nread = min(static_cast<off_t>(blob->size() - offset), static_cast<off_t>(count));
     TRY(buffer.write(blob->data() + offset, nread));
     return nread;
 }
 
-KResultOr<NonnullOwnPtr<KBuffer>> PCIDeviceAttributeSysFSComponent::try_to_generate_buffer() const
+ErrorOr<NonnullOwnPtr<KBuffer>> PCIDeviceAttributeSysFSComponent::try_to_generate_buffer() const
 {
     String value;
     switch (m_field_bytes_width) {