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- Lock the process while sending it a signal.

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- Attempt to define empty PROC_LOCK/UNLOCK when needed to help keep
  this driver portable.
This commit is contained in:
jhb 2001-03-07 03:42:42 +00:00
parent 9cd254601b
commit f75a181b19
1 changed files with 13 additions and 2 deletions
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15
sys/dev/bktr/bktr_core.c
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@ -116,6 +116,7 @@
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/vnode.h>
@ -130,6 +131,8 @@
#if (__FreeBSD_version < 500000)
#include <machine/clock.h> /* for DELAY */
#define PROC_LOCK(p)
#define PROC_UNLOCK(p)
#endif
#include <pci/pcivar.h>
@ -177,6 +180,8 @@ typedef unsigned int uintptr_t;
/* *** BSDI *** */
/****************/
#ifdef __bsdi__
#define PROC_LOCK(p)
#define PROC_UNLOCK(p)
#endif /* __bsdi__ */
@ -217,6 +222,9 @@ bktr_name(bktr_ptr_t bktr)
return (bktr->bktr_dev.dv_xname);
}
#define PROC_LOCK(p)
#define PROC_UNLOCK(p)
#endif /* __NetBSD__ || __OpenBSD__ */
@ -895,9 +903,12 @@ common_bktr_intr( void *arg )
* let them know the frame is complete.
*/
if (bktr->proc && !(bktr->signal & METEOR_SIG_MODE_MASK))
if (bktr->proc && !(bktr->signal & METEOR_SIG_MODE_MASK)) {
PROC_LOCK(bktr->proc);
psignal( bktr->proc,
bktr->signal&(~METEOR_SIG_MODE_MASK) );
PROC_UNLOCK(bktr->proc);
}
/*
* Reset the want flags if in continuous or
@ -1023,7 +1034,7 @@ video_open( bktr_ptr_t bktr )
bktr->frames_captured = 0;
bktr->even_fields_captured = 0;
bktr->odd_fields_captured = 0;
bktr->proc = (struct proc *)0;
bktr->proc = NULL;
set_fps(bktr, frame_rate);
bktr->video.addr = 0;
bktr->video.width = 0;