diff --git a/local/recipes/gpu/amdgpu/recipe.toml b/local/recipes/gpu/amdgpu/recipe.toml
index d6e37209fa..441d45b939 100644
--- a/local/recipes/gpu/amdgpu/recipe.toml
+++ b/local/recipes/gpu/amdgpu/recipe.toml
@@ -72,6 +72,7 @@ export CFLAGS="-std=gnu11 -D__redox__ -D__KERNEL__ -DCONFIG_DRM_AMDGPU -DCONFIG_
 # Stage 1: Compile Redox glue code
 "${TARGET_CC}" -c ${CFLAGS} "${REDOX_GLUE}/amdgpu_redox_main.c" -o amdgpu_redox_main.o
 "${TARGET_CC}" -c ${CFLAGS} "${REDOX_GLUE}/redox_stubs.c" -o redox_stubs.o
+"${TARGET_CC}" -c ${CFLAGS} "${REDOX_GLUE}/redox_quirk_bridge.c" -o redox_quirk_bridge.o
 
 # Stage 2: DCN hardware display files
 #
diff --git a/local/recipes/gpu/amdgpu/source/redox_quirk_bridge.c b/local/recipes/gpu/amdgpu/source/redox_quirk_bridge.c
new file mode 100644
index 0000000000..083bbe635f
--- /dev/null
+++ b/local/recipes/gpu/amdgpu/source/redox_quirk_bridge.c
@@ -0,0 +1,38 @@
+/* R1–R10 audit Gap 15: amdgpu C ↔ redox-drm Rust quirk-flag bridge.
+ *
+ * The data flow is:
+ *   1. redox-drm (Rust) calls
+ *      `redox_driver_sys::quirks::lookup_pci_quirks_full(&info)` —
+ *      the same path pcid uses at enumeration time. The result is
+ *      a real 64-bit flag word from the compiled-in table + TOML.
+ *   2. Rust pushes the word into this TU via
+ *      `redox_pci_set_quirk_flags` (defined below).
+ *   3. amdgpu C reads via `pci_get_quirk_flags` / `pci_has_quirk`.
+ *
+ * The previously-shared `redox_stubs.c` was misleading: the flag
+ * word is real, not a fake constant. Splitting the bridge out is
+ * the audit's documentation fix. Rust-side caller is
+ * `local/recipes/gpu/redox-drm/source/src/drivers/amd/display.rs:155`.
+ */
+
+#include "redox_glue.h"
+
+static u64 g_redox_quirk_flags;
+
+void redox_pci_set_quirk_flags(u64 quirk_flags)
+{
+    g_redox_quirk_flags = quirk_flags;
+    printk("PCI quirk flags stored: %#llx\n", (unsigned long long)quirk_flags);
+}
+
+u64 pci_get_quirk_flags(struct pci_dev *pdev)
+{
+    (void)pdev;
+    return g_redox_quirk_flags;
+}
+
+bool pci_has_quirk(struct pci_dev *pdev, u64 flag)
+{
+    (void)pdev;
+    return (g_redox_quirk_flags & flag) != 0;
+}
diff --git a/local/recipes/gpu/amdgpu/source/redox_stubs.c b/local/recipes/gpu/amdgpu/source/redox_stubs.c
index 431b6c893e..080c84e3c6 100644
--- a/local/recipes/gpu/amdgpu/source/redox_stubs.c
+++ b/local/recipes/gpu/amdgpu/source/redox_stubs.c
@@ -221,7 +221,6 @@ void redox_dma_free_coherent(size_t size, void *vaddr, dma_addr_t dma_handle)
  */
 static struct pci_dev g_pci_dev;
 static int g_pci_dev_populated;
-static u64 g_pci_quirk_flags;
 
 #define REDOX_MAX_FIRMWARE_BYTES (64U * 1024U * 1024U)
 #define REDOX_MAX_STORED_FIRMWARES 32
@@ -323,24 +322,6 @@ void redox_pci_release_regions(struct pci_dev *pdev)
     (void)pdev;
 }
 
-u64 pci_get_quirk_flags(struct pci_dev *pdev)
-{
-    (void)pdev;
-    return g_pci_quirk_flags;
-}
-
-bool pci_has_quirk(struct pci_dev *pdev, u64 flag)
-{
-    (void)pdev;
-    return (g_pci_quirk_flags & flag) != 0;
-}
-
-void redox_pci_set_quirk_flags(u64 quirk_flags)
-{
-    g_pci_quirk_flags = quirk_flags;
-    printk("PCI quirk flags stored: %#llx\n", (unsigned long long)quirk_flags);
-}
-
 void redox_firmware_store(const char *name, const u8 *data, size_t size)
 {
     int i;