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diff --git a/sys/compat/linuxkpi/common/include/linux/hex.h b/sys/compat/linuxkpi/common/include/linux/hex.h
new file mode 100644
--- /dev/null
+++ b/sys/compat/linuxkpi/common/include/linux/hex.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2022-2026 Bjoern A. Zeeb
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#ifndef _LINUXKPI_LINUX_HEX_H_
+#define _LINUXKPI_LINUX_HEX_H_
+
+#include <linux/types.h>
+#include <linux/errno.h>
+
+static inline int
+_h2b(const char c)
+{
+
+ if (c >= '0' && c <= '9')
+ return (c - '0');
+ if (c >= 'a' && c <= 'f')
+ return (10 + c - 'a');
+ if (c >= 'A' && c <= 'F')
+ return (10 + c - 'A');
+ return (-EINVAL);
+}
+
+static inline int
+hex2bin(uint8_t *bindst, const char *hexsrc, size_t binlen)
+{
+ int hi4, lo4;
+
+ while (binlen > 0) {
+ hi4 = _h2b(*hexsrc++);
+ lo4 = _h2b(*hexsrc++);
+ if (hi4 < 0 || lo4 < 0)
+ return (-EINVAL);
+
+ *bindst++ = (hi4 << 4) | lo4;
+ binlen--;
+ }
+
+ return (0);
+}
+
+#endif /* _LINUXKPI_LINUX_HEX_H_ */
diff --git a/sys/compat/linuxkpi/common/include/linux/kernel.h b/sys/compat/linuxkpi/common/include/linux/kernel.h
--- a/sys/compat/linuxkpi/common/include/linux/kernel.h
+++ b/sys/compat/linuxkpi/common/include/linux/kernel.h
@@ -56,6 +56,7 @@
#include <linux/log2.h>
#include <linux/kconfig.h>
#include <linux/instruction_pointer.h>
+#include <linux/hex.h>
#include <asm/byteorder.h>
#include <asm/cpufeature.h>
@@ -305,37 +306,6 @@
#define add_taint(x,y) do { \
} while (0)
-static inline int
-_h2b(const char c)
-{
-
- if (c >= '0' && c <= '9')
- return (c - '0');
- if (c >= 'a' && c <= 'f')
- return (10 + c - 'a');
- if (c >= 'A' && c <= 'F')
- return (10 + c - 'A');
- return (-EINVAL);
-}
-
-static inline int
-hex2bin(uint8_t *bindst, const char *hexsrc, size_t binlen)
-{
- int hi4, lo4;
-
- while (binlen > 0) {
- hi4 = _h2b(*hexsrc++);
- lo4 = _h2b(*hexsrc++);
- if (hi4 < 0 || lo4 < 0)
- return (-EINVAL);
-
- *bindst++ = (hi4 << 4) | lo4;
- binlen--;
- }
-
- return (0);
-}
-
static inline bool
mac_pton(const char *macin, uint8_t *macout)
{

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