5 files changed, 23 insertions, 1 deletions
diff --git a/arch/arm/boot/compressed/string.c b/arch/arm/boot/compressed/string.c
index 13c90abc68d6..ade5079bebbf 100644
--- a/arch/arm/boot/compressed/string.c
+++ b/arch/arm/boot/compressed/string.c
@@ -121,6 +121,16 @@ char *strchr(const char *s, int c)
 	return (char *)s;
 }
 
+char *strrchr(const char *s, int c)
+{
+	const char *last = NULL;
+	do {
+		if (*s == (char)c)
+			last = s;
+	} while (*s++);
+	return (char *)last;
+}
+
 #undef memset
 
 void *memset(void *s, int c, size_t count)
diff --git a/arch/arm64/kernel/image.h b/arch/arm64/kernel/image.h
index c7fcb232fe47..a820ed07fb80 100644
--- a/arch/arm64/kernel/image.h
+++ b/arch/arm64/kernel/image.h
@@ -103,6 +103,7 @@ __efistub_strlen		= KALLSYMS_HIDE(__pi_strlen);
 __efistub_strnlen		= KALLSYMS_HIDE(__pi_strnlen);
 __efistub_strcmp		= KALLSYMS_HIDE(__pi_strcmp);
 __efistub_strncmp		= KALLSYMS_HIDE(__pi_strncmp);
+__efistub_strrchr		= KALLSYMS_HIDE(__pi_strrchr);
 __efistub___flush_dcache_area	= KALLSYMS_HIDE(__pi___flush_dcache_area);
 
 #ifdef CONFIG_KASAN
diff --git a/arch/arm64/lib/strrchr.S b/arch/arm64/lib/strrchr.S
index 61eabd9a289a..f8e2784d5752 100644
--- a/arch/arm64/lib/strrchr.S
+++ b/arch/arm64/lib/strrchr.S
@@ -40,4 +40,4 @@ ENTRY(strrchr)
 	b	1b
 2:	mov	x0, x3
 	ret
-ENDPROC(strrchr)
+ENDPIPROC(strrchr)
diff --git a/arch/powerpc/boot/stdio.c b/arch/powerpc/boot/stdio.c
index a701261b1781..98042eff7b26 100644
--- a/arch/powerpc/boot/stdio.c
+++ b/arch/powerpc/boot/stdio.c
@@ -21,6 +21,16 @@ size_t strnlen(const char * s, size_t count)
 	return sc - s;
 }
 
+char *strrchr(const char *s, int c)
+{
+	const char *last = NULL;
+	do {
+		if (*s == (char)c)
+			last = s;
+	} while (*s++);
+	return (char *)last;
+}
+
 #ifdef __powerpc64__
 
 # define do_div(n, base) ({						\
diff --git a/arch/powerpc/boot/string.h b/arch/powerpc/boot/string.h
index 3fb71171da49..8c2ec0c05e4e 100644
--- a/arch/powerpc/boot/string.h
+++ b/arch/powerpc/boot/string.h
@@ -7,6 +7,7 @@ extern char *strcpy(char *dest, const char *src);
 extern char *strncpy(char *dest, const char *src, size_t n);
 extern char *strcat(char *dest, const char *src);
 extern char *strchr(const char *s, int c);
+extern char *strrchr(const char *s, int c);
 extern int strcmp(const char *s1, const char *s2);
 extern int strncmp(const char *s1, const char *s2, size_t n);
 extern size_t strlen(const char *s);