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tty: vt, ignore PIO_UNIMAPCLR param

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We do not do hashtables for unicode fonts since 1995 (1.3.28). So it
is time to remove the second parameter of con_clear_unimap and ignore
the advice from userspace completely.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2016-06-23 13:34:36 +02:00
committed by Greg Kroah-Hartman
parent 6ca8dfd781
commit f8b0c2e688
3 changed files with 9 additions and 17 deletions
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13
drivers/tty/vt/consolemap.c
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@@ -499,9 +499,8 @@ con_insert_unipair(struct uni_pagedir *p, u_short unicode, u_short fontpos)
return 0;
}
/* ui is a leftover from using a hashtable, but might be used again
Caller must hold the lock */
static int con_do_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
/* Caller must hold the lock */
static int con_do_clear_unimap(struct vc_data *vc)
{
struct uni_pagedir *p, *q;
@@ -524,11 +523,11 @@ static int con_do_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
return 0;
}
int con_clear_unimap(struct vc_data *vc, struct unimapinit *ui)
int con_clear_unimap(struct vc_data *vc)
{
int ret;
console_lock();
ret = con_do_clear_unimap(vc, ui);
ret = con_do_clear_unimap(vc);
console_unlock();
return ret;
}
@@ -556,7 +555,7 @@ int con_set_unimap(struct vc_data *vc, ushort ct, struct unipair __user *list)
int j, k;
u16 **p1, *p2, l;
err1 = con_do_clear_unimap(vc, NULL);
err1 = con_do_clear_unimap(vc);
if (err1) {
console_unlock();
return err1;
@@ -677,7 +676,7 @@ int con_set_default_unimap(struct vc_data *vc)
/* The default font is always 256 characters */
err = con_do_clear_unimap(vc, NULL);
err = con_do_clear_unimap(vc);
if (err)
return err;