Merge pull request #19 from tectrolabs/make_compatible_with_kernel_6_9

Making alrandom driver compatible with Kernel 6.9.*

Author: tectrolabs

linux/swrandom/swrandom.c

@@ -1,6 +1,6 @@
 /*
  * swrandom.c
- * ver. 2.5
+ * ver. 2.6
  *
  */
 
@@ -2179,8 +2179,13 @@ static bool acm_lock_device(void)
 {
    int op_status;
    locks_init_lock(&acmCtxt->fl);
+#ifndef TL_MIN_KERNEL_6_9
    acmCtxt->fl.fl_flags = FL_FLOCK | FL_EXISTS;
    acmCtxt->fl.fl_type = LOCK_READ | LOCK_WRITE;
+#else
+   acmCtxt->fl.c.flc_flags = FL_FLOCK | FL_EXISTS;
+   acmCtxt->fl.c.flc_type = LOCK_READ | LOCK_WRITE;
+#endif
    op_status = locks_lock_inode_wait(acmCtxt->inode, &acmCtxt->fl);
    if (op_status != 0) {
       pr_info("%s: acm_lock_device(): Could not lock device %s\n", DRIVER_NAME, acmCtxt->dev_name);
@@ -2243,7 +2248,11 @@ static void acm_clean_up(void)
    }
 
    if (acmCtxt->device_locked) {
+#ifndef TL_MIN_KERNEL_6_9
       acmCtxt->fl.fl_type = F_UNLCK;
+#else
+      acmCtxt->fl.c.flc_type = F_UNLCK;
+#endif
       op_status = locks_lock_inode_wait(acmCtxt->inode, &acmCtxt->fl);
       if (op_status != 0) {
          pr_err("%s: acm_clean_up(): Could not unlock %s\n", DRIVER_NAME, acmCtxt->dev_name);

linux/swrandom/swrandom.h

@@ -1,6 +1,6 @@
 /*
  * swrandom.h
- * ver. 2.5
+ * ver. 2.6
  *
  */
 
@@ -62,7 +62,7 @@
 #define SUCCESS 0
 #define DEVICE_NAME "swrandom"
 #define PROC_NAME "info"
-#define DRIVER_VERSION "2.5"
+#define DRIVER_VERSION "2.6"
 #define DRIVER_NAME "SWRNG"
 
 
@@ -90,6 +90,10 @@
 // Max amount of entropy bytes that user can request at a time.
 #define MAX_BYTES_USER_CAN_REQUEST (100000)
 
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(6,9,00)
+#define TL_MIN_KERNEL_6_9
+#endif
+
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(6,01,00)
 #define TL_MIN_KERNEL_6_1
 #endif