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OSS: dmabuf: fix negative DMAbuf_get_buffer_pointer() check 

Since unsigned active_offs < 0 is even true when DMAbuf_get_buffer_pointer()
returns negative

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
hifive-unleashed-5.1
Roel Kluin 2008-04-18 12:25:41 +02:00 committed by Takashi Iwai
parent e34ba21222
commit 0d52cea487
1 changed files with 2 additions and 2 deletions
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4
sound/oss/dmabuf.c
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@ -795,9 +795,9 @@ static int find_output_space(int dev, char **buf, int *size)
#ifdef BE_CONSERVATIVE
active_offs = dmap->byte_counter + dmap->qhead * dmap->fragment_size;
#else
active_offs = DMAbuf_get_buffer_pointer(dev, dmap, DMODE_OUTPUT);
active_offs = max(DMAbuf_get_buffer_pointer(dev, dmap, DMODE_OUTPUT), 0);
/* Check for pointer wrapping situation */
if (active_offs < 0 || active_offs >= dmap->bytes_in_use)
if (active_offs >= dmap->bytes_in_use)
active_offs = 0;
active_offs += dmap->byte_counter;
#endif