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[PARISC] [MUX] Get the hversion directly from the parisc_device 

Willy pointed out the hversion is already stored
in the parisc_device, so I do not need to extract
this information directly from the IODC data.
Also by using the information in the parisc_device
I can avoid re-reading the IODC data for the Muxes
with specifed port counts.

Signed-off-by: Ryan Bradetich <rbrad@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Ryan Bradetich 2006-11-10 04:06:14 +00:00 committed by Kyle McMartin
parent 6142544584
commit 514fb84e1c
1 changed files with 5 additions and 4 deletions
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9
drivers/serial/mux.c
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@ -83,19 +83,20 @@ static struct timer_list mux_timer;
*/
static int __init get_mux_port_count(struct parisc_device *dev)
{
int status;
u8 iodc_data[32];
unsigned long bytecnt;
int status = pdc_iodc_read(&bytecnt, dev->hpa.start, 0, iodc_data, 32);
BUG_ON(status != PDC_OK);
/* If this is the built-in Mux for the K-Class (Eole CAP/MUX),
* we only need to allocate resources for 1 port since the
* other 7 ports are not connected.
*/
if(((iodc_data[0] << 4) | ((iodc_data[1] & 0xf0) >> 4)) == 0x15)
if(dev->id.hversion == 0x15)
return 1;
status = pdc_iodc_read(&bytecnt, dev->hpa.start, 0, iodc_data, 32);
BUG_ON(status != PDC_OK);
/* Return the number of ports specified in the iodc data. */
return ((((iodc_data)[4] & 0xf0) >> 4) * 8) + 8;
}