diff options
Diffstat (limited to 'Kernel/Bus/USB')
| -rw-r--r-- | Kernel/Bus/USB/UHCI/UHCIDescriptorPool.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Kernel/Bus/USB/UHCI/UHCIDescriptorPool.h b/Kernel/Bus/USB/UHCI/UHCIDescriptorPool.h index 007fffc4da..ad15ffd8c7 100644 --- a/Kernel/Bus/USB/UHCI/UHCIDescriptorPool.h +++ b/Kernel/Bus/USB/UHCI/UHCIDescriptorPool.h @@ -9,6 +9,7 @@ #include <AK/NonnullOwnPtr.h> #include <AK/OwnPtr.h> #include <AK/Stack.h> +#include <Kernel/Locking/Spinlock.h> #include <Kernel/Memory/MemoryManager.h> #include <Kernel/Memory/Region.h> #include <Kernel/StdLib.h> @@ -38,6 +39,8 @@ public: [[nodiscard]] T* try_take_free_descriptor() { + SpinlockLocker locker(m_pool_lock); + // We're out of descriptors! if (m_free_descriptor_stack.is_empty()) return nullptr; @@ -51,6 +54,8 @@ public: void release_to_pool(T* ptr) { + SpinlockLocker locker(m_pool_lock); + dbgln_if(UHCI_VERBOSE_DEBUG, "Returning descriptor @ {} to pool {}", ptr, m_pool_name); if (!m_free_descriptor_stack.push(ptr)) dbgln("Failed to return descriptor to pool {}. Stack overflow!", m_pool_name); @@ -78,5 +83,7 @@ private: StringView m_pool_name; // Name of this pool NonnullOwnPtr<Memory::Region> m_pool_region; // Memory region where descriptors actually reside Stack<T*, PAGE_SIZE / sizeof(T)> m_free_descriptor_stack; // Stack of currently free descriptor pointers + Spinlock m_pool_lock; }; + } |