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[ALSA] dbri sparc: fixes TS leak

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This patch fixes time slot leak in the dbri driver.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Krzysztof Helt 2006-08-28 13:00:45 +02:00 committed by Jaroslav Kysela
parent aaad3653a5
commit 99dabfe716
1 changed files with 18 additions and 2 deletions
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20
sound/sparc/dbri.c
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@ -1044,7 +1044,7 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period
{
struct dbri_streaminfo *info = &dbri->stream_info[streamno];
__u32 dvma_buffer;
int desc = 0;
int desc;
int len;
int first_desc = -1;
int last_desc = -1;
@ -1087,6 +1087,18 @@ static int setup_descs(struct snd_dbri * dbri, int streamno, unsigned int period
len &= ~3;
}
/* Free descriptors if pipe has any */
desc = dbri->pipes[info->pipe].first_desc;
if ( desc >= 0)
do {
dbri->dma->desc[desc].nda = dbri->dma->desc[desc].ba = 0;
desc = dbri->next_desc[desc];
} while (desc != -1 && desc != dbri->pipes[info->pipe].first_desc);
dbri->pipes[info->pipe].desc = -1;
dbri->pipes[info->pipe].first_desc = -1;
desc = 0;
while (len > 0) {
int mylen;
@ -2054,6 +2066,7 @@ static int snd_dbri_hw_free(struct snd_pcm_substream *substream)
struct snd_dbri *dbri = snd_pcm_substream_chip(substream);
struct dbri_streaminfo *info = DBRI_STREAM(dbri, substream);
int direction;
dprintk(D_USR, "hw_free.\n");
/* hw_free can get called multiple times. Only unmap the DMA once.
@ -2068,7 +2081,10 @@ static int snd_dbri_hw_free(struct snd_pcm_substream *substream)
substream->runtime->buffer_size, direction);
info->dvma_buffer = 0;
}
info->pipe = -1;
if (info->pipe != -1) {
reset_pipe(dbri, info->pipe);
info->pipe = -1;
}
return snd_pcm_lib_free_pages(substream);
}