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vt: parse_font_info_static should set refcount, not parse_font_info

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As we get started with no memory allocator, we set up static font data
for font passed by loader (if there is any). At this time, we also must
set refcount 1, and refcount will get incremented in cnprobe() callback.

At some point the memory allocator will be available, and we will set up
properly allocated font data, but we should not disturb the refcount.

PR: 253147
This commit is contained in:
Toomas Soome 2021-01-31 23:04:59 +02:00
parent 8fb966790e
commit 1912d2b15e
1 changed files with 8 additions and 2 deletions
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10
sys/dev/vt/vt_core.c
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@ -1487,6 +1487,8 @@ parse_font_info_static(struct font_info *fi)
vfp = &vt_font_loader;
vfp->vf_height = fi->fi_height;
vfp->vf_width = fi->fi_width;
/* This is default font, set refcount 1 to disable removal. */
vfp->vf_refcount = 1;
for (unsigned i = 0; i < VFNT_MAPS; i++) {
if (fi->fi_map_count[i] == 0)
continue;
@ -1499,6 +1501,12 @@ parse_font_info_static(struct font_info *fi)
return (vfp);
}
/*
* Set up default font with allocated data structures.
* However, we can not set refcount here, because it is already set and
* incremented in vtterm_cnprobe() to avoid being released by font load from
* userland.
*/
static struct vt_font *
parse_font_info(struct font_info *fi)
{
@ -1528,8 +1536,6 @@ parse_font_info(struct font_info *fi)
ptr = roundup2(ptr, 8);
vfp = &vt_font_loader;
/* This is default font, set refcount 1 to disable removal. */
vfp->vf_refcount = 1;
vfp->vf_height = fi->fi_height;
vfp->vf_width = fi->fi_width;
for (unsigned i = 0; i < VFNT_MAPS; i++) {