diff --git a/drivers/staging/csr/csr_formatted_io.c b/drivers/staging/csr/csr_formatted_io.c
index 51fb988a587a..bda8712f11f8 100644
--- a/drivers/staging/csr/csr_formatted_io.c
+++ b/drivers/staging/csr/csr_formatted_io.c
@@ -16,7 +16,7 @@ s32 CsrSnprintf(char *dest, size_t n, const char *fmt, ...)
     s32 r;
     va_list args;
     va_start(args, fmt);
-    r = CsrVsnprintf(dest, n, fmt, args);
+    r = vsnprintf(dest, n, fmt, args);
     va_end(args);
 
     if (dest && (n > 0))
diff --git a/drivers/staging/csr/csr_util.c b/drivers/staging/csr/csr_util.c
index ff1b85e5097c..397345c3ac24 100644
--- a/drivers/staging/csr/csr_util.c
+++ b/drivers/staging/csr/csr_util.c
@@ -52,12 +52,6 @@ size_t CsrStrLen(const char *string)
 EXPORT_SYMBOL_GPL(CsrStrLen);
 #endif
 
-s32 CsrVsnprintf(char *string, size_t count, const char *format, va_list args)
-{
-    return vsnprintf(string, count, format, args);
-}
-EXPORT_SYMBOL_GPL(CsrVsnprintf);
-
 MODULE_DESCRIPTION("CSR Operating System Kernel Abstraction");
 MODULE_AUTHOR("Cambridge Silicon Radio Ltd.");
 MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/staging/csr/csr_util.h b/drivers/staging/csr/csr_util.h
index 2efc3311c93a..1a911ca2424e 100644
--- a/drivers/staging/csr/csr_util.h
+++ b/drivers/staging/csr/csr_util.h
@@ -33,7 +33,6 @@ void CsrUInt16ToHex(u16 number, char *str);
 void *CsrMemCpy(void *dest, const void *src, size_t count);
 size_t CsrStrLen(const char *string);
 #endif /* !CSR_USE_STDC_LIB */
-s32 CsrVsnprintf(char *string, size_t count, const char *format, va_list args);
 
 #define CsrOffsetOf(st, m)  ((size_t) & ((st *) 0)->m)
 
diff --git a/drivers/staging/csr/csr_wifi_hip_card_sdio_intr.c b/drivers/staging/csr/csr_wifi_hip_card_sdio_intr.c
index b491110d230b..a111d40f3e34 100644
--- a/drivers/staging/csr/csr_wifi_hip_card_sdio_intr.c
+++ b/drivers/staging/csr/csr_wifi_hip_card_sdio_intr.c
@@ -121,7 +121,7 @@ void unifi_debug_log_to_buf(const char *fmt, ...)
     va_list args;
 
     va_start(args, fmt);
-    CsrVsnprintf(s, DEBUG_BUFFER_SIZE, fmt, args);
+    vsnprintf(s, DEBUG_BUFFER_SIZE, fmt, args);
     va_end(args);
 
     unifi_debug_string_to_buf(s);