From 7e472a9c1d7abb7a4fe55334ee0eca1ef5790dbf Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Fri, 8 Aug 2025 17:39:50 +0300
Subject: [PATCH] Kernel: Fix USB FS device default max packet size

Apparently this is a common non spec compliant issue on many
controllers/devices.

thanks @sasdallas
---
 kernel/kernel/USB/XHCI/Device.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/kernel/kernel/USB/XHCI/Device.cpp b/kernel/kernel/USB/XHCI/Device.cpp
index dc37887f..5acfaf8c 100644
--- a/kernel/kernel/USB/XHCI/Device.cpp
+++ b/kernel/kernel/USB/XHCI/Device.cpp
@@ -40,10 +40,9 @@ namespace Kernel
 		switch (m_speed_class)
 		{
 			case USB::SpeedClass::LowSpeed:
-			case USB::SpeedClass::FullSpeed:
 				m_endpoints[0].max_packet_size = 8;
-				is_ls_or_fs_device_on_hs_hub = m_info.parent_hub && (m_info.parent_hub->speed_class() == USB::SpeedClass::HighSpeed);
 				break;
+			case USB::SpeedClass::FullSpeed:
 			case USB::SpeedClass::HighSpeed:
 				m_endpoints[0].max_packet_size = 64;
 				break;
@@ -53,6 +52,16 @@ namespace Kernel
 			default: ASSERT_NOT_REACHED();
 		}
 
+		switch (m_speed_class)
+		{
+			case USB::SpeedClass::LowSpeed:
+			case USB::SpeedClass::FullSpeed:
+				is_ls_or_fs_device_on_hs_hub = m_info.parent_hub && (m_info.parent_hub->speed_class() == USB::SpeedClass::HighSpeed);
+				break;
+			default:
+				break;
+		}
+
 		m_input_context = TRY(DMARegion::create(33 * context_size));
 		memset(reinterpret_cast<void*>(m_input_context->vaddr()), 0, m_input_context->size());