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kernel: convert textmode cga screen contents to kmesg only once

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screeninit() might be called again by devvga when switching
to textmode, so only convert the text framebuffer to kmesg
the first time.
This commit is contained in:
cinap_lenrek 2017-12-23 03:56:12 +01:00
parent 19419329b2
commit 50bea0348c
1 changed files with 6 additions and 2 deletions
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8
sys/src/9/pc/cga.c
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@ -199,6 +199,8 @@ cgatokmesg(void)
void
screeninit(void)
{
static int once;
cgapos = cgaregr(0x0E)<<8;
cgapos |= cgaregr(0x0F);
cgapos *= 2;
@ -208,8 +210,10 @@ screeninit(void)
movecursor();
}
cgatokmesg();
if(once == 0){
once = 1;
cgatokmesg();
}
screenputs = cgascreenputs;
}