Revert "console ASCII glyph 1:1 mapping"

upstream commit: c0b7988200a82290287c6f4cd49585007f73175a

This reverts commit 1c55f18717304100a5f624c923f7cb6511b4116d.

Ingo Brueckl was assuming that reverting to 1:1 mapping for chars >= 128
was not useful, but it happens to be: due to the limitations of the
Linux console, when a blind user wants to read BIG5 on it, he has no
other way than loading a font without SFM and let the 1:1 mapping permit
the screen reader to get the BIG5 encoding.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>

diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 7900bd63b36da74529eb76bf2923c165cf8d8a1f..60453ab3608ffe80c6086bd843ebea50b3721496 100644 (file)
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -2271,7 +2271,7 @@ rescan_last_byte:
                                    continue; /* nothing to display */
                                }
                                /* Glyph not found */
-                               if ((!(vc->vc_utf && !vc->vc_disp_ctrl) && c < 128) && !(c & ~charmask)) {
+                               if ((!(vc->vc_utf && !vc->vc_disp_ctrl) || c < 128) && !(c & ~charmask)) {
                                    /* In legacy mode use the glyph we get by a 1:1 mapping.
                                       This would make absolutely no sense with Unicode in mind,
                                       but do this for ASCII characters since a font may lack