diff options
Diffstat (limited to 'drivers/net/wan/pc300_drv.c')
| -rw-r--r-- | drivers/net/wan/pc300_drv.c | 24 |
1 files changed, 19 insertions, 5 deletions
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c index 5823e3bca178..36d1c3ff7078 100644 --- a/drivers/net/wan/pc300_drv.c +++ b/drivers/net/wan/pc300_drv.c @@ -2867,7 +2867,6 @@ static int ch_config(pc300dev_t * d) uclong clktype = chan->conf.phys_settings.clock_type; ucshort encoding = chan->conf.proto_settings.encoding; ucshort parity = chan->conf.proto_settings.parity; - int tmc, br; ucchar md0, md2; /* Reset the channel */ @@ -2940,8 +2939,12 @@ static int ch_config(pc300dev_t * d) case PC300_RSV: case PC300_X21: if (clktype == CLOCK_INT || clktype == CLOCK_TXINT) { + int tmc, br; + /* Calculate the clkrate parameters */ tmc = clock_rate_calc(clkrate, card->hw.clock, &br); + if (tmc < 0) + return -EIO; cpc_writeb(scabase + M_REG(TMCT, ch), tmc); cpc_writeb(scabase + M_REG(TXS, ch), (TXS_DTRXC | TXS_IBRG | br)); @@ -3097,14 +3100,16 @@ static int cpc_attach(struct net_device *dev, unsigned short encoding, return 0; } -static void cpc_opench(pc300dev_t * d) +static int cpc_opench(pc300dev_t * d) { pc300ch_t *chan = (pc300ch_t *) d->chan; pc300_t *card = (pc300_t *) chan->card; - int ch = chan->channel; + int ch = chan->channel, rc; void __iomem *scabase = card->hw.scabase; - ch_config(d); + rc = ch_config(d); + if (rc) + return rc; rx_config(d); @@ -3113,6 +3118,8 @@ static void cpc_opench(pc300dev_t * d) /* Assert RTS and DTR */ cpc_writeb(scabase + M_REG(CTL, ch), cpc_readb(scabase + M_REG(CTL, ch)) & ~(CTL_RTS | CTL_DTR)); + + return 0; } static void cpc_closech(pc300dev_t * d) @@ -3168,9 +3175,16 @@ int cpc_open(struct net_device *dev) } sprintf(ifr.ifr_name, "%s", dev->name); - cpc_opench(d); + result = cpc_opench(d); + if (result) + goto err_out; + netif_start_queue(dev); return 0; + +err_out: + hdlc_close(dev); + return result; } static int cpc_close(struct net_device *dev) |