--- a/include/dahdi/kernel.h
+++ b/include/dahdi/kernel.h
@@ -58,6 +58,15 @@
 
 #include <linux/poll.h>
 
+/* Added for DAHDI use of hrtimers (hrtimer_init, etc.) */
+#include <linux/hrtimer.h>
+
+/* del_timer[_sync] was renamed to timer_delete[_sync] in newer kernels */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 15, 0)
+#define del_timer      timer_delete
+#define del_timer_sync timer_delete_sync
+#endif
+
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 1, 0)
 #define netif_napi_add netif_napi_add_weight
 #endif
@@ -66,6 +75,25 @@
 #include <linux/pci.h>
 #include <linux/dma-mapping.h>
 
+/* DAHDI expects hrtimer_init(), but kernels >= 6.8 removed it.
+ * Recreate it using the modern hrtimer_setup() API.
+ */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6, 8, 0)
+static inline void hrtimer_init(struct hrtimer *timer,
+                                clockid_t clock_id,
+                                enum hrtimer_mode mode)
+{
+    /* No callback yet — DAHDI sets it later with hrtimer_update_function() */
+    hrtimer_setup(timer, NULL, clock_id, mode);
+}
+#endif
+
+/* from_timer() helper was removed in newer kernels; restore it for DAHDI. */
+#ifndef from_timer
+#define from_timer(var, callback_timer, timer_fieldname)           \
+        container_of(callback_timer, typeof(*var), timer_fieldname)
+#endif
+
 static inline void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size, dma_addr_t *dma_handle)
 {
     return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev, size, dma_handle, GFP_ATOMIC);