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V4L/DVB: cx88: fix setting input when using DVB 

In cx88-mpeg.c, there is code that sets core->input to CX88_VMUX_DVB.
However, this may be incorrect, since core->input is actually an
index to core->board.input[], which has not enough elements to be
indexed by the value of CX88_VMUX_DVB. So, the modified code searches
core->board.input[] for an input with a type of CX88_VMUX_DVB, and if
it does not find one, the index is simply set to zero.
The change may not have much effect, though, since it appears the only
case when core->input is actually used is when the current input is
being queried.

Signed-off-by: Istvan Varga <istvanv@users.sourceforge.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Istvan Varga 2010-03-27 09:47:45 -03:00 committed by Mauro Carvalho Chehab
parent db190fc13a
commit d922b8ea33
1 changed files with 10 additions and 1 deletions
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11
drivers/media/video/cx88/cx88-mpeg.c
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@ -599,13 +599,22 @@ struct cx8802_driver * cx8802_get_driver(struct cx8802_dev *dev, enum cx88_board
static int cx8802_request_acquire(struct cx8802_driver *drv)
{
struct cx88_core *core = drv->core;
unsigned int i;
/* Fail a request for hardware if the device is busy. */
if (core->active_type_id != CX88_BOARD_NONE &&
core->active_type_id != drv->type_id)
return -EBUSY;
core->input = CX88_VMUX_DVB;
core->input = 0;
for (i = 0;
i < (sizeof(core->board.input) / sizeof(struct cx88_input));
i++) {
if (core->board.input[i].type == CX88_VMUX_DVB) {
core->input = i;
break;
}
}
if (drv->advise_acquire)
{