Update of /cvsroot/alsa/alsa-kernel/pci
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv9969
Modified Files:
intel8x0.c
Log Message:
check that period interrupt really has occured;
clear only those interrupts that have been handled
Index: intel8x0.c
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/pci/intel8x0.c,v
retrieving revision 1.136
retrieving revision 1.137
diff -u -r1.136 -r1.137
--- intel8x0.c 21 Apr 2004 18:18:27 -0000 1.136
+++ intel8x0.c 26 Apr 2004 07:47:09 -0000 1.137
@@ -775,11 +775,14 @@
static inline void snd_intel8x0_update(intel8x0_t *chip, ichdev_t *ichdev)
{
unsigned long port = ichdev->reg_offset;
- int civ, i, step;
+ int status, civ, i, step;
int ack = 0;
+ status = igetbyte(chip, port + ichdev->roff_sr);
civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
- if (civ == ichdev->civ) {
+ if (!(status & ICH_BCIS)) {
+ step = 0;
+ } else if (civ == ichdev->civ) {
// snd_printd("civ same %d\n", civ);
step = 1;
ichdev->civ++;
@@ -813,7 +816,8 @@
snd_pcm_period_elapsed(ichdev->substream);
spin_lock(&chip->reg_lock);
}
- iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
+ iputbyte(chip, port + ichdev->roff_sr,
+ status & (ICH_FIFOE | ICH_BCIS | ICH_LVBCI));
}
static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-------------------------------------------------------
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