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Do not take data from the controller in interrupt handler if we are polling.

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jakllsch 2014-01-11 20:17:56 +00:00
parent 4f7da0ce19
commit 056e4dba49
1 changed files with 6 additions and 4 deletions
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10
sys/dev/ic/pckbc.c
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@ -1,4 +1,4 @@
/* $NetBSD: pckbc.c,v 1.55 2013/09/15 09:21:21 martin Exp $ */ /* $NetBSD: pckbc.c,v 1.56 2014/01/11 20:17:56 jakllsch Exp $ */
/* /*
* Copyright (c) 2004 Ben Harris. * Copyright (c) 2004 Ben Harris.
@ -27,7 +27,7 @@
*/ */
#include <sys/cdefs.h> #include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pckbc.c,v 1.55 2013/09/15 09:21:21 martin Exp $"); __KERNEL_RCSID(0, "$NetBSD: pckbc.c,v 1.56 2014/01/11 20:17:56 jakllsch Exp $");
#include <sys/param.h> #include <sys/param.h>
#include <sys/systm.h> #include <sys/systm.h>
@ -597,12 +597,14 @@ pckbcintr(void *vsc)
if (!(stat & KBS_DIB)) if (!(stat & KBS_DIB))
break; break;
served = 1;
slot = (t->t_haveaux && (stat & 0x20)) ? slot = (t->t_haveaux && (stat & 0x20)) ?
PCKBC_AUX_SLOT : PCKBC_KBD_SLOT; PCKBC_AUX_SLOT : PCKBC_KBD_SLOT;
q = t->t_slotdata[slot]; q = t->t_slotdata[slot];
if (q != NULL && q->polling)
return 0;
served = 1;
KBD_DELAY; KBD_DELAY;
data = bus_space_read_1(t->t_iot, t->t_ioh_d, 0); data = bus_space_read_1(t->t_iot, t->t_ioh_d, 0);