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USB: Gadget: fix UTF conversion in the usbstring library

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This patch (as1234) fixes a bug in the UTF8 -> UTF-16 conversion
routine in the gadget/usbstring library.  In a UTF-8 multi-byte
sequence, all bytes after the first should have their high-order
two bits set to 10, not 11.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Alan Stern 2009-04-27 13:22:40 -04:00 committed by Greg Kroah-Hartman
parent 72a772a9a3
commit 0f43158cad
1 changed files with 3 additions and 3 deletions
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6
drivers/usb/gadget/usbstring.c
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@ -38,7 +38,7 @@ static int utf8_to_utf16le(const char *s, __le16 *cp, unsigned len)
uchar = (c & 0x1f) << 6;
c = (u8) *s++;
if ((c & 0xc0) != 0xc0)
if ((c & 0xc0) != 0x80)
goto fail;
c &= 0x3f;
uchar |= c;
@ -49,13 +49,13 @@ static int utf8_to_utf16le(const char *s, __le16 *cp, unsigned len)
uchar = (c & 0x0f) << 12;
c = (u8) *s++;
if ((c & 0xc0) != 0xc0)
if ((c & 0xc0) != 0x80)
goto fail;
c &= 0x3f;
uchar |= c << 6;
c = (u8) *s++;
if ((c & 0xc0) != 0xc0)
if ((c & 0xc0) != 0x80)
goto fail;
c &= 0x3f;
uchar |= c;