diff mbox

[v2,05/11] backports: add bin2hex()

Message ID 20171013094226.10021-5-johannes@sipsolutions.net (mailing list archive)
State Accepted
Headers show

Commit Message

Johannes Berg Oct. 13, 2017, 9:42 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

This is needed in the key backports in the next patch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 backport/backport-include/linux/kernel.h |  5 +++++
 backport/compat/backport-3.18.c          | 10 ++++++++++
 2 files changed, 15 insertions(+)
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Patch

diff --git a/backport/backport-include/linux/kernel.h b/backport/backport-include/linux/kernel.h
index 0e9a69f9bcd2..3ddeb13c29a2 100644
--- a/backport/backport-include/linux/kernel.h
+++ b/backport/backport-include/linux/kernel.h
@@ -213,6 +213,11 @@  static inline u32 reciprocal_scale(u32 val, u32 ep_ro)
 }
 #endif /* LINUX_VERSION_IS_LESS(3,14,0) */
 
+#if LINUX_VERSION_IS_LESS(3,18,0)
+#define bin2hex LINUX_BACKPORT(bin2hex)
+extern char *bin2hex(char *dst, const void *src, size_t count);
+#endif
+
 #endif /* __BACKPORT_KERNEL_H */
 
 /*
diff --git a/backport/compat/backport-3.18.c b/backport/compat/backport-3.18.c
index 73db233cb22b..d2eceef7dc77 100644
--- a/backport/compat/backport-3.18.c
+++ b/backport/compat/backport-3.18.c
@@ -320,3 +320,13 @@  void memzero_explicit(void *s, size_t count)
 }
 EXPORT_SYMBOL_GPL(memzero_explicit);
 #endif
+
+char *bin2hex(char *dst, const void *src, size_t count)
+{
+	const unsigned char *_src = src;
+
+	while (count--)
+		dst = hex_byte_pack(dst, *_src++);
+	return dst;
+}
+EXPORT_SYMBOL(bin2hex);