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authorRyan Bradetich <rbradetich@gmail.com>2006-11-10 04:06:14 +0000
committerKyle McMartin <kyle@ubuntu.com>2006-12-08 00:34:31 -0500
commit514fb84e1c5d12a0af808458bcae0c6463041f93 (patch)
tree723716a1f52f65d631912071338519f7a3975750 /drivers/serial/mux.c
parent614254458452d09ea0376862160662f2a6075ab9 (diff)
[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>
Diffstat (limited to 'drivers/serial/mux.c')
-rw-r--r--drivers/serial/mux.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/serial/mux.c b/drivers/serial/mux.c
index f5b17f5333f..ea9cbda7796 100644
--- a/drivers/serial/mux.c
+++ b/drivers/serial/mux.c
@@ -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;
}