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[PATCH] WAN: fix C101 card carrier handling

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Hi,

One of my recent changes broke C101 carrier handling, this patch
fixes it. Also fixes an old TX underrun checking bug.

2.6.18 material. Please apply.
Thanks.

Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Krzysztof Halasa 2006-08-16 01:52:23 +02:00 committed by Jeff Garzik
parent 2ca2d5e84c
commit a76b044af1
1 changed files with 5 additions and 4 deletions
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9
drivers/net/wan/c101.c
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@ -118,7 +118,7 @@ static inline void openwin(card_t *card, u8 page)
static inline void set_carrier(port_t *port)
{
if (!sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD)
if (!(sca_in(MSCI1_OFFSET + ST3, port) & ST3_DCD))
netif_carrier_on(port_to_dev(port));
else
netif_carrier_off(port_to_dev(port));
@ -127,10 +127,10 @@ static inline void set_carrier(port_t *port)
static void sca_msci_intr(port_t *port)
{
u8 stat = sca_in(MSCI1_OFFSET + ST1, port); /* read MSCI ST1 status */
u8 stat = sca_in(MSCI0_OFFSET + ST1, port); /* read MSCI ST1 status */
/* Reset MSCI TX underrun status bit */
sca_out(stat & ST1_UDRN, MSCI0_OFFSET + ST1, port);
/* Reset MSCI TX underrun and CDCD (ignored) status bit */
sca_out(stat & (ST1_UDRN | ST1_CDCD), MSCI0_OFFSET + ST1, port);
if (stat & ST1_UDRN) {
struct net_device_stats *stats = hdlc_stats(port_to_dev(port));
@ -138,6 +138,7 @@ static void sca_msci_intr(port_t *port)
stats->tx_fifo_errors++;
}
stat = sca_in(MSCI1_OFFSET + ST1, port); /* read MSCI1 ST1 status */
/* Reset MSCI CDCD status bit - uses ch#2 DCD input */
sca_out(stat & ST1_CDCD, MSCI1_OFFSET + ST1, port);