staging: csr: remove csr_utf16.c

Only one function was being used in the file, so move it to where it was
being called and delete the rest of the file, and csr_unicode.h as it's
no longer needed as well.

Cc: Mikko Virkkilä <mikko.virkkila@bluegiga.com>
Cc: Lauri Hintsala <Lauri.Hintsala@bluegiga.com>
Cc: Riku Mettälä <riku.mettala@bluegiga.com>
Cc: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

10 files changed, 28 insertions, 1155 deletions

diff --git a/drivers/staging/csr/Makefile b/drivers/staging/csr/Makefile
index 814f57a539d..afda44b0a92 100644
--- a/drivers/staging/csr/Makefile
+++ b/drivers/staging/csr/Makefile
@@ -71,6 +71,5 @@ csr_helper-y :=	csr_time.o			\
 		csr_framework_ext.o		\
 		csr_wifi_serialize_primitive_types.o	\
 		csr_serialize_primitive_types.o	\
-		csr_utf16.o			\
 		csr_msgconv.o			\
 		csr_panic.o
diff --git a/drivers/staging/csr/csr_msgconv.h b/drivers/staging/csr/csr_msgconv.h
index 2e1aad8a389..08497096fdf 100644
--- a/drivers/staging/csr/csr_msgconv.h
+++ b/drivers/staging/csr/csr_msgconv.h
@@ -14,7 +14,6 @@
 #include <linux/types.h>
 #include "csr_prim_defs.h"
 #include "csr_sched.h"
-#include "csr_unicode.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/drivers/staging/csr/csr_serialize_primitive_types.c b/drivers/staging/csr/csr_serialize_primitive_types.c
index 39406fd1f1a..a6f29ea36d2 100644
--- a/drivers/staging/csr/csr_serialize_primitive_types.c
+++ b/drivers/staging/csr/csr_serialize_primitive_types.c
@@ -15,6 +15,34 @@
 #include "csr_macro.h"
 #include "csr_lib.h"
 
+/********************************************************************************
+*
+*   Name:           CsrUtf16StrLen
+*
+*   Description:    The function returns the number of 16 bit elements present
+*                   in the 0-terminated string.
+*
+*   Input:          0-terminated string of 16 bit unicoded characters.
+*
+*   Output:         The number of 16 bit elements in the string.
+*
+*********************************************************************************/
+static u32 CsrUtf16StrLen(const u16 *unicodeString)
+{
+    u32 length;
+
+    length = 0;
+    if (unicodeString != NULL)
+    {
+        while (*unicodeString)
+        {
+            length++;
+            unicodeString++;
+        }
+    }
+    return length;
+}
+
 void CsrUint8Des(u8 *value, u8 *buffer, size_t *offset)
 {
     *value = buffer[*offset];
diff --git a/drivers/staging/csr/csr_unicode.h b/drivers/staging/csr/csr_unicode.h
deleted file mode 100644
index 2105e7110c6..00000000000
--- a/drivers/staging/csr/csr_unicode.h
+++ /dev/null
@@ -1,87 +0,0 @@
-#ifndef CSR_UNICODE_H__
-#define CSR_UNICODE_H__
-/*****************************************************************************
-
-            (c) Cambridge Silicon Radio Limited 2010
-            All rights reserved and confidential information of CSR
-
-            Refer to LICENSE.txt included with this source for details
-            on the license terms.
-
-*****************************************************************************/
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-u16 *CsrUint32ToUtf16String(u32 number);
-
-u32 CsrUtf16StringToUint32(const u16 *unicodeString);
-u32 CsrUtf16StrLen(const u16 *unicodeString);
-
-u8 *CsrUtf16String2Utf8(const u16 *source);
-
-u16 *CsrUtf82Utf16String(const u8 *utf8String);
-
-u16 *CsrUtf16StrCpy(u16 *target, const u16 *source);
-u16 *CsrUtf16StringDuplicate(const u16 *source);
-
-u16 CsrUtf16StrICmp(const u16 *string1, const u16 *string2);
-u16 CsrUtf16StrNICmp(const u16 *string1, const u16 *string2, u32 count);
-
-u16 *CsrUtf16MemCpy(u16 *dest, const u16 *src, u32 count);
-u16 *CsrUtf16ConcatenateTexts(const u16 *inputText1, const u16 *inputText2,
-    const u16 *inputText3, const u16 *inputText4);
-
-u16 *CsrUtf16String2XML(u16 *str);
-u16 *CsrXML2Utf16String(u16 *str);
-
-u32 CsrUtf8StringLengthInBytes(const u8 *string);
-
-/*******************************************************************************
-
-    NAME
-        CsrUtf8StrTruncate
-
-    DESCRIPTION
-        In-place truncate a string on a UTF-8 character boundary by writing a
-        null character somewhere in the range target[count - 3]:target[count].
-
-        Please note that memory passed must be at least of length count + 1, to
-        ensure space for a full length string that is terminated at
-        target[count], in the event that target[count - 1] is the final byte of
-        a UTF-8 character.
-
-    PARAMETERS
-        target - Target string to truncate.
-        count - The desired length, in bytes, of the resulting string. Depending
-                on the contents, the resulting string length will be between
-                count - 3 and count.
-
-    RETURNS
-        Returns target
-
-*******************************************************************************/
-u8 *CsrUtf8StrTruncate(u8 *target, size_t count);
-
-/*
- * UCS2
- *
- * D-13157
- */
-typedef u8 CsrUcs2String;
-
-size_t CsrUcs2ByteStrLen(const CsrUcs2String *ucs2String);
-size_t CsrConverterUcs2ByteStrLen(const CsrUcs2String *str);
-
-u8 *CsrUcs2ByteString2Utf8(const CsrUcs2String *ucs2String);
-CsrUcs2String *CsrUtf82Ucs2ByteString(const u8 *utf8String);
-
-u8 *CsrUtf16String2Ucs2ByteString(const u16 *source);
-u16 *CsrUcs2ByteString2Utf16String(const u8 *source);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/drivers/staging/csr/csr_utf16.c b/drivers/staging/csr/csr_utf16.c
deleted file mode 100644
index 4854f85aa92..00000000000
--- a/drivers/staging/csr/csr_utf16.c
+++ /dev/null
@@ -1,1055 +0,0 @@
-/*****************************************************************************
-
-            (c) Cambridge Silicon Radio Limited 2010
-            All rights reserved and confidential information of CSR
-
-            Refer to LICENSE.txt included with this source for details
-            on the license terms.
-
-*****************************************************************************/
-#include <linux/module.h>
-#include <linux/slab.h>
-#include "csr_unicode.h"
-#include "csr_macro.h"
-
-#define UNI_SUR_HIGH_START   ((u32) 0xD800)
-#define UNI_SUR_HIGH_END     ((u32) 0xDBFF)
-#define UNI_SUR_LOW_START    ((u32) 0xDC00)
-#define UNI_SUR_LOW_END      ((u32) 0xDFFF)
-#define UNI_REPLACEMENT_CHAR ((u32) 0xFFFD)
-#define UNI_HALF_SHIFT       ((u8) 10)  /* used for shifting by 10 bits */
-#define UNI_HALF_BASE        ((u32) 0x00010000)
-#define UNI_BYTEMASK         ((u32) 0xBF)
-#define UNI_BYTEMARK         ((u32) 0x80)
-
-#define CAPITAL(x)    ((x >= 'a') && (x <= 'z') ? ((x) & 0x00DF) : (x))
-
-/*
-*  Index into the table with the first byte to get the number of trailing bytes in a utf-8 character.
-*  -1 if the byte has an invalid value.
-*
-*  Legal sequences are:
-*
-*  byte  1st      2nd      3rd      4th
-*
-*       00-7F
-*       C2-DF    80-BF
-*       E0       A0-BF    80-BF
-*       E1-EC    80-BF    80-BF
-*       ED       80-9F    80-BF
-*       EE-EF    80-BF    80-BF
-*       F0       90-BF    80-BF    80-BF
-*       F1-F3    80-BF    80-BF    80-BF
-*       F4       80-8F    80-BF    80-BF
-*/
-static const s8 trailingBytesForUtf8[256] =
-{
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                                 /* 0x00 - 0x1F */
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                                 /* 0x20 - 0x3F */
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                                 /* 0x40 - 0x5F */
-    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,                                 /* 0x60 - 0x7F */
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x80 - 0x9F */
-    -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xA0 - 0xBF */
-    -1, -1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,                               /* 0xC0 - 0xDF */
-    2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,                      /* 0xE0 - 0xFF */
-};
-
-/* Values to be substracted from a u32 when converting from UTF8 to UTF16 */
-static const u32 offsetsFromUtf8[4] =
-{
-    0x00000000, 0x00003080, 0x000E2080, 0x03C82080
-};
-
-/********************************************************************************
-*
-*   Name:           CsrUint32ToUtf16String
-*
-*   Description:    The function converts an 32 bit number to an UTF-16 string
-*                   that is allocated and 0-terminated.
-*
-*   Input:          32 bit number.
-*
-*   Output:         A string of UTF-16 characters.
-*
-*********************************************************************************/
-u16 *CsrUint32ToUtf16String(u32 number)
-{
-    u16 count, noOfDigits;
-    u16 *output;
-    u32 tempNumber;
-
-    /* calculate the number of digits in the output */
-    tempNumber = number;
-    noOfDigits = 1;
-    while (tempNumber >= 10)
-    {
-        tempNumber = tempNumber / 10;
-        noOfDigits++;
-    }
-
-    output = kmalloc(sizeof(u16) * (noOfDigits + 1), GFP_KERNEL); /*add space for 0-termination*/
-
-    tempNumber = number;
-    for (count = noOfDigits; count > 0; count--)
-    {
-        output[count - 1] = (u16) ((tempNumber % 10) + '0');
-        tempNumber = tempNumber / 10;
-    }
-    output[noOfDigits] = '\0';
-
-    return output;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16StringToUint32
-*
-*   Description:    The function converts an UTF-16 string that is
-*                   0-terminated into a 32 bit number.
-*
-*   Input:          A string of UTF-16 characters containig a number.
-*
-*   Output:         32 bit number.
-*
-*********************************************************************************/
-u32 CsrUtf16StringToUint32(const u16 *unicodeString)
-{
-    u16 numLen, count;
-    u32 newNumber = 0;
-
-    numLen = (u16) CsrUtf16StrLen(unicodeString);
-
-    if ((numLen > 10) || (numLen == 0) || (unicodeString == NULL)) /*CSRMAX number is 4.294.967.295 */
-    {
-        return 0;
-    }
-
-    for (count = 0; count < numLen; count++)
-    {
-        u16 input = unicodeString[count];
-        if ((input < 0x30) || (input > 0x39) || ((newNumber == 0x19999999) && (input > 0x35)) || (newNumber > 0x19999999)) /* chars are present or number is too large now causing number to get to large when *10 */
-        {
-            return 0;
-        }
-
-        newNumber = (newNumber * 10) + (input - 0x30);
-    }
-    return newNumber;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16MemCpy
-*
-*   Description:    The function copies count number of 16 bit data elements
-*                   from srv to dest.
-*
-*   Input:          A pointer to an unicoded string.
-*
-*   Output:         A pointer to an unicoded string.
-*
-*********************************************************************************/
-u16 *CsrUtf16MemCpy(u16 *dest, const u16 *src, u32 count)
-{
-    return memcpy((u8 *) dest, (u8 *) src, count * sizeof(u16));
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16ConcatenateTexts
-*
-*   Description:    The function merge the contents of 4 unicoded input pointers
-*                   into a new string.
-*
-*   Input:          4 unicoded input strings (UTF-16).
-*
-*   Output:         A new unicoded string (UTF-16) containing the combined strings.
-*
-*********************************************************************************/
-u16 *CsrUtf16ConcatenateTexts(const u16 *inputText1, const u16 *inputText2,
-    const u16 *inputText3, const u16 *inputText4)
-{
-    u16 *outputText;
-    u32 textLen, textLen1, textLen2, textLen3, textLen4;
-
-    textLen1 = CsrUtf16StrLen(inputText1);
-    textLen2 = CsrUtf16StrLen(inputText2);
-    textLen3 = CsrUtf16StrLen(inputText3);
-    textLen4 = CsrUtf16StrLen(inputText4);
-
-    textLen = textLen1 + textLen2 + textLen3 + textLen4;
-
-    if (textLen == 0) /*stop here is all lengths are 0*/
-    {
-        return NULL;
-    }
-
-    outputText = kmalloc((textLen + 1) * sizeof(u16), GFP_KERNEL); /* add space for 0-termination*/
-
-
-    if (inputText1 != NULL)
-    {
-        CsrUtf16MemCpy(outputText, inputText1, textLen1);
-    }
-
-    if (inputText2 != NULL)
-    {
-        CsrUtf16MemCpy(&(outputText[textLen1]), inputText2, textLen2);
-    }
-
-    if (inputText3 != NULL)
-    {
-        CsrUtf16MemCpy(&(outputText[textLen1 + textLen2]), inputText3, textLen3);
-    }
-
-    if (inputText4 != NULL)
-    {
-        CsrUtf16MemCpy(&(outputText[textLen1 + textLen2 + textLen3]), inputText4, textLen4);
-    }
-
-    outputText[textLen] = '\0';
-
-    return outputText;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16StrLen
-*
-*   Description:    The function returns the number of 16 bit elements present
-*                   in the 0-terminated string.
-*
-*   Input:          0-terminated string of 16 bit unicoded characters.
-*
-*   Output:         The number of 16 bit elements in the string.
-*
-*********************************************************************************/
-u32 CsrUtf16StrLen(const u16 *unicodeString)
-{
-    u32 length;
-
-    length = 0;
-    if (unicodeString != NULL)
-    {
-        while (*unicodeString)
-        {
-            length++;
-            unicodeString++;
-        }
-    }
-    return length;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16String2Utf8
-*
-*   Description:    The function decodes an UTF-16 string into an UTF8 byte
-*                   oriented string.
-*
-*   Input:          0-terminated UTF-16 string characters.
-*
-*   Output:         0-terminated string of byte oriented UTF8 coded characters.
-*
-*********************************************************************************/
-u8 *CsrUtf16String2Utf8(const u16 *source)
-{
-    u8 *dest, *destStart = NULL;
-    u32 i;
-    u32 ch;
-    u32 length;
-    u32 sourceLength;
-    u8 bytes;
-    u8 appendNull = FALSE;
-
-    u8 firstByteMark[5] = {0x00, 0x00, 0xC0, 0xE0, 0xF0};
-
-    if (!source)
-    {
-        return NULL;
-    }
-
-    length = 0;
-    sourceLength = CsrUtf16StrLen(source) + 1;
-
-    for (i = 0; i < sourceLength; i++)
-    {
-        ch = source[i];
-        if ((ch >= UNI_SUR_HIGH_START) && (ch <= UNI_SUR_HIGH_END)) /* This is a high surrogate */
-        {
-            if (i + 1 < sourceLength) /* The low surrogate is in the source */
-            {
-                u32 ch2 = source[++i];
-                if ((ch2 >= UNI_SUR_LOW_START) && (ch2 <= UNI_SUR_LOW_END)) /* And it is a legal low surrogate */
-                {
-                    length += 4;
-                }
-                else /* It is not a low surrogate, instead put a Unicode
-                     'REPLACEMENT CHARACTER' (U+FFFD) */
-                {
-                    length += 3;
-                    i--; /* Substract 1 again as the conversion must continue after the ill-formed code unit */
-                }
-            }
-            else /* The low surrogate does not exist, instead put a Unicode
-                 'REPLACEMENT CHARACTER' (U+FFFD), and the null terminated character */
-            {
-                length += 4;
-            }
-        }
-        else if ((ch >= UNI_SUR_LOW_START) && (ch <= UNI_SUR_LOW_END)) /* The value of UTF-16 is not allowed to be in this range, instead put
-             a Unicode 'REPLACEMENT CHARACTER' (U+FFFD) */
-        {
-            length += 3;
-        }
-        else /* Figure out how many bytes that are required */
-        {
-            if (ch < 0x0080)
-            {
-                length++;
-            }
-            else if (ch < 0x0800)
-            {
-                length += 2;
-            }
-            else
-            {
-                length += 3;
-            }
-        }
-    }
-
-    dest = kmalloc(length, GFP_KERNEL);
-    destStart = dest;
-
-    for (i = 0; i < sourceLength; i++)
-    {
-        ch = source[i];
-        if ((ch >= UNI_SUR_HIGH_START) && (ch <= UNI_SUR_HIGH_END)) /* This is a high surrogate */
-        {
-            if (i + 1 < sourceLength) /* The low surrogate is in the source */
-            {
-                u32 ch2 = source[++i];
-                if ((ch2 >= UNI_SUR_LOW_START) && (ch2 <= UNI_SUR_LOW_END)) /* And it is a legal low surrogate, convert to UTF-32 */
-                {
-                    ch = ((ch - UNI_SUR_HIGH_START) << UNI_HALF_SHIFT) + (ch2 - UNI_SUR_LOW_START) + UNI_HALF_BASE;
-                }
-                else /* It is not a low surrogate, instead put a Unicode
-                     'REPLACEMENT CHARACTER' (U+FFFD) */
-                {
-                    ch = UNI_REPLACEMENT_CHAR;
-                    i--; /* Substract 1 again as the conversion must continue after the ill-formed code unit */
-                }
-            }
-            else /* The low surrogate does not exist, instead put a Unicode
-                 'REPLACEMENT CHARACTER' (U+FFFD), and the null terminated character */
-            {
-                ch = UNI_REPLACEMENT_CHAR;
-                appendNull = TRUE;
-            }
-        }
-        else if ((ch >= UNI_SUR_LOW_START) && (ch <= UNI_SUR_LOW_END)) /* The value of UTF-16 is not allowed to be in this range, instead put
-             a Unicode 'REPLACEMENT CHARACTER' (U+FFFD) */
-        {
-            ch = UNI_REPLACEMENT_CHAR;
-        }
-
-        /* Figure out how many bytes that are required */
-        if (ch < (u32) 0x80)
-        {
-            bytes = 1;
-        }
-        else if (ch < (u32) 0x800)
-        {
-            bytes = 2;
-        }
-        else if (ch < (u32) 0x10000)
-        {
-            bytes = 3;
-        }
-        else if (ch < (u32) 0x110000)
-        {
-            bytes = 4;
-        }
-        else
-        {
-            bytes = 3;
-            ch = UNI_REPLACEMENT_CHAR;
-        }
-
-        dest += bytes;
-
-        switch (bytes) /* Convert character to UTF-8. Note: everything falls through. */
-        {
-            case 4:
-            {
-                *--dest = (u8) ((ch | UNI_BYTEMARK) & UNI_BYTEMASK);
-                ch >>= 6;
-            }
-            /* FALLTHROUGH */
-            case 3:
-            {
-                *--dest = (u8) ((ch | UNI_BYTEMARK) & UNI_BYTEMASK);
-                ch >>= 6;
-            }
-            /* FALLTHROUGH */
-            case 2:
-            {
-                *--dest = (u8) ((ch | UNI_BYTEMARK) & UNI_BYTEMASK);
-                ch >>= 6;
-            }
-            /* FALLTHROUGH */
-            case 1:
-            {
-                *--dest = (u8) (ch | firstByteMark[bytes]);
-            }
-            /* FALLTHROUGH */
-            default:
-            {
-                break;
-            }
-        }
-
-        dest += bytes;
-    }
-
-    if (appendNull) /* Append the \0 character */
-    {
-        *dest = '\0';
-    }
-
-    return destStart;
-}
-
-/*****************************************************************************
-
-    NAME
-        isLegalUtf8
-
-    DESCRIPTION
-        Returns TRUE if the given UFT-8 code unit is legal as defined by the
-        Unicode standard (see Chapter 3: Conformance, Section 3.9: Unicode
-        Encoding Forms, UTF-8).
-
-        This function assumes that the length parameter is unconditionally
-        correct and that the first byte is already validated by looking it up
-        in the trailingBytesForUtf8 array, which also reveals the number of
-        trailing bytes.
-
-        Legal code units are composed of one of the following byte sequences:
-
-        1st      2nd      3rd      4th
-        --------------------------------
-        00-7F
-        C2-DF    80-BF
-        E0       A0-BF    80-BF
-        E1-EC    80-BF    80-BF
-        ED       80-9F    80-BF
-        EE-EF    80-BF    80-BF
-        F0       90-BF    80-BF    80-BF
-        F1-F3    80-BF    80-BF    80-BF
-        F4       80-8F    80-BF    80-BF
-
-        Please note that this function only checks whether the 2nd, 3rd and
-        4th bytes fall into the valid ranges.
-
-    PARAMETERS
-        codeUnit - pointer to the first byte of the byte sequence composing
-            the code unit to test.
-        length - the number of bytes in the code unit. Valid range is 1 to 4.
-
-    RETURNS
-        TRUE if the given code unit is legal.
-
-*****************************************************************************/
-static u8 isLegalUtf8(const u8 *codeUnit, u32 length)
-{
-    const u8 *srcPtr = codeUnit + length;
-    u8 byte;
-
-    switch (length) /* Everything falls through except case 1 */
-    {
-        case 4:
-        {
-            byte = *--srcPtr;
-            if ((byte < 0x80) || (byte > 0xBF))
-            {
-                return FALSE;
-            }
-        }
-        /* Fallthrough */
-        case 3:
-        {
-            byte = *--srcPtr;
-            if ((byte < 0x80) || (byte > 0xBF))
-            {
-                return FALSE;
-            }
-        }
-        /* Fallthrough */
-        case 2:
-        {
-            byte = *--srcPtr;
-            if (byte > 0xBF)
-            {
-                return FALSE;
-            }
-
-            switch (*codeUnit) /* No fallthrough */
-            {
-                case 0xE0:
-                {
-                    if (byte < 0xA0)
-                    {
-                        return FALSE;
-                    }
-                    break;
-                }
-                case 0xED:
-                {
-                    if ((byte < 0x80) || (byte > 0x9F))
-                    {
-                        return FALSE;
-                    }
-                    break;
-                }
-                case 0xF0:
-                {
-                    if (byte < 0x90)
-                    {
-                        return FALSE;
-                    }
-                    break;
-                }
-                case 0xF4:
-                {
-                    if ((byte < 0x80) || (byte > 0x8F))
-                    {
-                        return FALSE;
-                    }
-                    break;
-                }
-                default:
-                {
-                    if (byte < 0x80)
-                    {
-                        return FALSE;
-                    }
-                    break;
-                }
-            }
-        }
-        /* Fallthrough */
-        case 1:
-        default:
-            /* The 1st byte and length are assumed correct */
-            break;
-    }
-
-    return TRUE;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf82Utf16String
-*
-*   Description:    The function decodes an UTF8 byte oriented string into a
-*                   UTF-16string.
-*
-*   Input:          0-terminated string of byte oriented UTF8 coded characters.
-*
-*   Output:         0-terminated string of UTF-16 characters.
-*
-*********************************************************************************/
-u16 *CsrUtf82Utf16String(const u8 *utf8String)
-{
-    size_t i, length = 0;
-    size_t sourceLength;
-    u16 *dest = NULL;
-    u16 *destStart = NULL;
-    s8 extraBytes2Read;
-
-    if (!utf8String)
-    {
-        return NULL;
-    }
-    sourceLength = strlen((char *)utf8String);
-
-    for (i = 0; i < sourceLength; i++)
-    {
-        extraBytes2Read = trailingBytesForUtf8[utf8String[i]];
-
-        if (extraBytes2Read == -1) /* Illegal byte value, instead put a Unicode 'REPLACEMENT CHARACTER' (U+FFFD) */
-        {
-            length += 1;
-        }
-        else if (i + extraBytes2Read > sourceLength) /* The extra bytes does not exist, instead put a Unicode 'REPLACEMENT
-             CHARACTER' (U+FFFD), and the null terminated character */
-        {
-            length += 2;
-            break;
-        }
-        else if (isLegalUtf8(&utf8String[i], extraBytes2Read + 1) == FALSE) /* It is not a legal utf-8 character, instead put a Unicode 'REPLACEMENT
-             CHARACTER' (U+FFFD) */
-        {
-            length += 1;
-        }
-        else
-        {
-            if (utf8String[i] > 0xEF) /* Needs a high and a low surrogate */
-            {
-                length += 2;
-            }
-            else
-            {
-                length += 1;
-            }
-            i += extraBytes2Read;
-        }
-    }
-
-    /* Create space for the null terminated character */
-    dest = kmalloc((1 + length) * sizeof(u16), GFP_KERNEL);
-    destStart = dest;
-
-    for (i = 0; i < sourceLength; i++)
-    {
-        extraBytes2Read = trailingBytesForUtf8[utf8String[i]];
-
-        if (extraBytes2Read == -1) /* Illegal byte value, instead put a Unicode 'REPLACEMENT CHARACTER' (U+FFFD) */
-        {
-            *dest++ = UNI_REPLACEMENT_CHAR;
-        }
-        else if (i + extraBytes2Read > sourceLength) /* The extra bytes does not exist, instead put a Unicode 'REPLACEMENT
-             CHARACTER' (U+FFFD), and the null terminated character */
-        {
-            *dest++ = UNI_REPLACEMENT_CHAR;
-            *dest++ = '\0';
-            break;
-        }
-        else if (isLegalUtf8(&utf8String[i], extraBytes2Read + 1) == FALSE) /* It is not a legal utf-8 character, instead put a Unicode 'REPLACEMENT
-             CHARACTER' (U+FFFD) */
-        {
-            *dest++ = UNI_REPLACEMENT_CHAR;
-        }
-        else /* It is legal, convert the character to an u32 */
-        {
-            u32 ch = 0;
-
-            switch (extraBytes2Read) /* Everything falls through */
-            {
-                case 3:
-                {
-                    ch += utf8String[i];
-                    ch <<= 6;
-                    i++;
-                }
-                /* FALLTHROUGH */
-                case 2:
-                {
-                    ch += utf8String[i];
-                    ch <<= 6;
-                    i++;
-                }
-                /* FALLTHROUGH */
-                case 1:
-                {
-                    ch += utf8String[i];
-                    ch <<= 6;
-                    i++;
-                }
-                /* FALLTHROUGH */
-                case 0:
-                {
-                    ch += utf8String[i];
-                }
-                /* FALLTHROUGH */
-                default:
-                {
-                    break;
-                }
-            }
-
-            ch -= offsetsFromUtf8[extraBytes2Read];
-
-            if (ch <= 0xFFFF) /* Character can be encoded in one u16 */
-            {
-                *dest++ = (u16) ch;
-            }
-            else /* The character needs two u16 */
-            {
-                ch -= UNI_HALF_BASE;
-                *dest++ = (u16) ((ch >> UNI_HALF_SHIFT) | UNI_SUR_HIGH_START);
-                *dest++ = (u16) ((ch & 0x03FF) | UNI_SUR_LOW_START);
-            }
-        }
-    }
-
-    destStart[length] = 0x00;
-
-    return destStart;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16StrCpy
-*
-*   Description:    The function copies the contents from one UTF-16 string
-*                   to another UTF-16 string.
-*
-*   Input:          0-terminated UTF-16 string.
-*
-*   Output:         0-terminated UTF-16 string.
-*
-*********************************************************************************/
-u16 *CsrUtf16StrCpy(u16 *target, const u16 *source)
-{
-    if (source) /* if source is not NULL*/
-    {
-        memcpy(target, source, (CsrUtf16StrLen(source) + 1) * sizeof(u16));
-        return target;
-    }
-    else
-    {
-        return NULL;
-    }
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16StringDuplicate
-*
-*   Description:    The function allocates a new pointer and copies the input to
-*                   the new pointer.
-*
-*   Input:          0-terminated UTF-16 string.
-*
-*   Output:         Allocated variable0-terminated UTF-16 string.
-*
-*********************************************************************************/
-u16 *CsrUtf16StringDuplicate(const u16 *source)
-{
-    u16 *target = NULL;
-    u32 length;
-
-    if (source) /* if source is not NULL*/
-    {
-        length = (CsrUtf16StrLen(source) + 1) * sizeof(u16);
-        target = kmalloc(length, GFP_KERNEL);
-        memcpy(target, source, length);
-    }
-    return target;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16StrICmp
-*
-*   Description:    The function compares two UTF-16 strings.
-*
-*   Input:          Two 0-terminated UTF-16 string.
-*
-*   Output:         0: if the strings are identical.
-*
-*********************************************************************************/
-u16 CsrUtf16StrICmp(const u16 *string1, const u16 *string2)
-{
-    while (*string1 || *string2)
-    {
-        if (CAPITAL(*string1) != CAPITAL(*string2))
-        {
-            return *string1 - *string2;
-        }
-        string1++;
-        string2++;
-    }
-
-    return 0;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16StrNICmp
-*
-*   Description:    The function compares upto count number of elements in the
-*                   two UTF-16 string.
-*
-*   Input:          Two 0-terminated UTF-16 string and a maximum
-*                   number of elements to check.
-*
-*   Output:         0: if the strings are identical.
-*
-*********************************************************************************/
-u16 CsrUtf16StrNICmp(const u16 *string1, const u16 *string2, u32 count)
-{
-    while ((*string1 || *string2) && count--)
-    {
-        if (CAPITAL(*string1) != CAPITAL(*string2))
-        {
-            return *string1 - *string2;
-        }
-        string1++;
-        string2++;
-    }
-
-    return 0;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrUtf16String2XML
-*
-*   Description:    The function converts an unicoded string (UTF-16) into an unicoded XML
-*                   string where some special characters are encoded according to
-*                   the XML spec.
-*
-*   Input:          A unicoded string (UTF-16) which is freed.
-*
-*   Output:         A new unicoded string (UTF-16) containing the converted output.
-*
-*********************************************************************************/
-u16 *CsrUtf16String2XML(u16 *str)
-{
-    u16 *scanString;
-    u16 *outputString = NULL;
-    u16 *resultString = str;
-    u32 stringLength = 0;
-    u8 encodeChars = FALSE;
-
-    scanString = str;
-    if (scanString)
-    {
-        while (*scanString)
-        {
-            if (*scanString == L'&')
-            {
-                stringLength += 5;
-                encodeChars = TRUE;
-            }
-            else if ((*scanString == L'<') || (*scanString == L'>'))
-            {
-                stringLength += 4;
-                encodeChars = TRUE;
-            }
-            else
-            {
-                stringLength++;
-            }
-
-            scanString++;
-        }
-
-        stringLength++;
-
-        if (encodeChars)
-        {
-            resultString = outputString = kmalloc(stringLength * sizeof(u16), GFP_KERNEL);
-
-            scanString = str;
-
-            while (*scanString)
-            {
-                if (*scanString == L'&')
-                {
-                    *outputString++ = '&';
-                    *outputString++ = 'a';
-                    *outputString++ = 'm';
-                    *outputString++ = 'p';
-                    *outputString++ = ';';
-                }
-                else if (*scanString == L'<')
-                {
-                    *outputString++ = '&';
-                    *outputString++ = 'l';
-                    *outputString++ = 't';
-                    *outputString++ = ';';
-                }
-                else if (*scanString == L'>')
-                {
-                    *outputString++ = '&';
-                    *outputString++ = 'g';
-                    *outputString++ = 't';
-                    *outputString++ = ';';
-                }
-                else
-                {
-                    *outputString++ = *scanString;
-                }
-
-                scanString++;
-            }
-
-            *outputString++ = 0;
-
-            kfree(str);
-        }
-    }
-
-    return resultString;
-}
-
-/********************************************************************************
-*
-*   Name:           CsrXML2Utf16String
-*
-*   Description:    The function converts an unicoded XML string into an unicoded
-*                   string (UTF-16) where some special XML characters are decoded according to
-*                   the XML spec.
-*
-*   Input:          A unicoded XML string which is freed.
-*
-*   Output:         A new unicoded pointer containing the decoded output.
-*
-*********************************************************************************/
-u16 *CsrXML2Utf16String(u16 *str)
-{
-    u16 *scanString;
-    u16 *outputString = NULL;
-    u16 *resultString = str;
-    u32 stringLength = 0;
-    u8 encodeChars = FALSE;
-
-    scanString = str;
-    if (scanString)
-    {
-        while (*scanString)
-        {
-            if (*scanString == (u16) L'&')
-            {
-                scanString++;
-
-                if (!CsrUtf16StrNICmp(scanString, (u16 *) L"AMP;", 4))
-                {
-                    scanString += 3;
-                    encodeChars = TRUE;
-                }
-                else if (!CsrUtf16StrNICmp(scanString, (u16 *) L"LT;", 3))
-                {
-                    scanString += 2;
-                    encodeChars = TRUE;
-                }
-                else if (!CsrUtf16StrNICmp(scanString, (u16 *) L"GT;", 3))
-                {
-                    scanString += 2;
-                    encodeChars = TRUE;
-                }
-                if (!CsrUtf16StrNICmp(scanString, (u16 *) L"APOS;", 5))
-                {
-                    scanString += 4;
-                    encodeChars = TRUE;
-                }
-                if (!CsrUtf16StrNICmp(scanString, (u16 *) L"QUOT;", 5))
-                {
-                    scanString += 4;
-                    encodeChars = TRUE;
-                }
-                else
-                {
-                    scanString--;
-                }
-            }
-
-            stringLength++;
-            scanString++;
-        }
-
-        stringLength++;
-
-        if (encodeChars)
-        {
-            resultString = outputString = kmalloc(stringLength * sizeof(u16), GFP_KERNEL);
-
-            scanString = str;
-
-            while (*scanString)
-            {
-                if (*scanString == L'&')
-                {
-                    scanString++;
-
-                    if (!CsrUtf16StrNICmp(scanString, (u16 *) L"AMP;", 4))
-                    {
-                        *outputString++ = L'&';
-                        scanString += 3;
-                    }
-                    else if (!CsrUtf16StrNICmp(scanString, (u16 *) L"LT;", 3))
-                    {
-                        *outputString++ = L'<';
-                        scanString += 2;
-                    }
-                    else if (!CsrUtf16StrNICmp(scanString, (u16 *) L"GT;", 3))
-                    {
-                        *outputString++ = L'>';
-                        scanString += 2;
-                    }
-                    else if (!CsrUtf16StrNICmp(scanString, (u16 *) L"APOS;", 5))
-                    {
-                        *outputString++ = L'\'';
-                        scanString += 4;
-                    }
-                    else if (!CsrUtf16StrNICmp(scanString, (u16 *) L"QUOT;", 5))
-                    {
-                        *outputString++ = L'\"';
-                        scanString += 4;
-                    }
-                    else
-                    {
-                        *outputString++ = L'&';
-                        scanString--;
-                    }
-                }
-                else
-                {
-                    *outputString++ = *scanString;
-                }
-
-                scanString++;
-            }
-
-            *outputString++ = 0;
-
-            kfree(str);
-        }
-    }
-
-    return resultString;
-}
-
-u32 CsrUtf8StringLengthInBytes(const u8 *string)
-{
-    size_t length = 0;
-    if (string)
-    {
-        length = strlen((const char *)string);
-    }
-    return (u32) length;
-}
-
-u8 *CsrUtf8StrTruncate(u8 *target, size_t count)
-{
-    size_t lastByte = count - 1;
-
-    target[count] = '\0';
-
-    if (count && (target[lastByte] & 0x80))
-    {
-        /* the last byte contains non-ascii char */
-        if (target[lastByte] & 0x40)
-        {
-            /* multi-byte char starting just before truncation */
-            target[lastByte] = '\0';
-        }
-        else if ((target[lastByte - 1] & 0xE0) == 0xE0)
-        {
-            /* 3-byte char starting 2 bytes before truncation */
-            target[lastByte - 1] = '\0';
-        }
-        else if ((target[lastByte - 2] & 0xF0) == 0xF0)
-        {
-            /* 4-byte char starting 3 bytes before truncation */
-            target[lastByte - 2] = '\0';
-        }
-    }
-
-    return target;
-}
diff --git a/drivers/staging/csr/csr_wifi_msgconv.h b/drivers/staging/csr/csr_wifi_msgconv.h
index 06314109098..7ec35d70e14 100644
--- a/drivers/staging/csr/csr_wifi_msgconv.h
+++ b/drivers/staging/csr/csr_wifi_msgconv.h
@@ -13,7 +13,6 @@
 
 #include "csr_prim_defs.h"
 #include "csr_sched.h"
-#include "csr_unicode.h"
 
 #ifdef __cplusplus
 extern "C" {
diff --git a/drivers/staging/csr/csr_wifi_nme_ap_serialize.c b/drivers/staging/csr/csr_wifi_nme_ap_serialize.c
index 493e33e95e2..1a901a70d19 100644
--- a/drivers/staging/csr/csr_wifi_nme_ap_serialize.c
+++ b/drivers/staging/csr/csr_wifi_nme_ap_serialize.c
@@ -12,7 +12,6 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include "csr_msgconv.h"
-#include "csr_unicode.h"
 
 #ifdef CSR_WIFI_NME_ENABLE
 #ifdef CSR_WIFI_AP_ENABLE
diff --git a/drivers/staging/csr/csr_wifi_router_ctrl_serialize.c b/drivers/staging/csr/csr_wifi_router_ctrl_serialize.c
index b9f9adb5ad5..3eda1b66b33 100644
--- a/drivers/staging/csr/csr_wifi_router_ctrl_serialize.c
+++ b/drivers/staging/csr/csr_wifi_router_ctrl_serialize.c
@@ -12,9 +12,6 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include "csr_msgconv.h"
-#include "csr_unicode.h"
-
-
 #include "csr_wifi_router_ctrl_prim.h"
 #include "csr_wifi_router_ctrl_serialize.h"
 
diff --git a/drivers/staging/csr/csr_wifi_router_serialize.c b/drivers/staging/csr/csr_wifi_router_serialize.c
index 5717ebc05b0..4eccf5d6c28 100644
--- a/drivers/staging/csr/csr_wifi_router_serialize.c
+++ b/drivers/staging/csr/csr_wifi_router_serialize.c
@@ -11,9 +11,6 @@
 /* Note: this is an auto-generated file. */
 #include <linux/slab.h>
 #include "csr_msgconv.h"
-#include "csr_unicode.h"
-
-
 #include "csr_wifi_router_prim.h"
 #include "csr_wifi_router_serialize.h"
 
diff --git a/drivers/staging/csr/csr_wifi_sme_serialize.c b/drivers/staging/csr/csr_wifi_sme_serialize.c
index d55e3ee6921..7d7e1d8b5ed 100644
--- a/drivers/staging/csr/csr_wifi_sme_serialize.c
+++ b/drivers/staging/csr/csr_wifi_sme_serialize.c
@@ -12,9 +12,6 @@
 #include <linux/string.h>
 #include <linux/slab.h>
 #include "csr_msgconv.h"
-#include "csr_unicode.h"
-
-
 #include "csr_wifi_sme_prim.h"
 #include "csr_wifi_sme_serialize.h"