diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2015-01-02 15:29:15 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2015-01-02 15:29:15 +0100 |
| commit | 9aec87c46c483ca1cf560e0e8a929cdf72447371 (patch) | |
| tree | d8a01bc7852d52012468de3c0c225cbfdee053d4 /sys/src/9/pc/devvga.c | |
| parent | 7848fe597006ecc6ee0605341ada08b7dea42f2a (diff) | |
vgavesa: get rid of the vesa kproc
in 9front, screen blanking is always initiated from process context,
so there is no need for a kproc anymore.
care has been taken for the race between vesadisable() and vesablank()
by acquiering the drawlock prior calling scr->dev->enable() and
scr->dev->disable(). this also has the side effect of accelerated
fills and scrolls not being called during device disable.
Diffstat (limited to 'sys/src/9/pc/devvga.c')
| -rw-r--r-- | sys/src/9/pc/devvga.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/src/9/pc/devvga.c b/sys/src/9/pc/devvga.c index 3867d36dc..5d2ec72c8 100644 --- a/sys/src/9/pc/devvga.c +++ b/sys/src/9/pc/devvga.c @@ -309,6 +309,11 @@ vgactl(Cmdbuf *cb) for(i = 0; vgadev[i]; i++){ if(strcmp(cb->f[1], vgadev[i]->name)) continue; + qlock(&drawlock); + if(waserror()){ + qunlock(&drawlock); + nexterror(); + } if(scr->dev){ if(scr->dev->disable) scr->dev->disable(scr); @@ -319,6 +324,8 @@ vgactl(Cmdbuf *cb) scr->dev = vgadev[i]; if(scr->dev->enable) scr->dev->enable(scr); + qunlock(&drawlock); + poperror(); return; } break; |