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ps2mouse: retry disable packet streaming command 0xf5

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disabling mouse packet streaming command 0xf5 can fail
when a packet is currently transmitted.

this can be seen when one moves the mouse while running:

while(){echo accelerated >/dev/mousectl; sleep 0.5}
This commit is contained in:
cinap_lenrek 2014-01-02 11:07:06 +01:00
parent e56affb840
commit d1be5e163c
1 changed files with 11 additions and 1 deletions
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12
sys/src/9/pc/mouse.c
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@ -260,9 +260,19 @@ resetmouse(void)
static void
setstream(int on)
{
int i;
switch(mousetype){
case MousePS2:
i8042auxcmd(on ? 0xF4 : 0xF5);
/*
* disabling streaming can fail when
* a packet is currently transmitted.
*/
for(i=0; i<4; i++){
if(i8042auxcmd(on ? 0xF4 : 0xF5) != -1)
break;
delay(50);
}
break;
}
}