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[ISDN] HiSax netjet_s: code movement, prep for hotplug 

1) Remove CONFIG_PCI ifdefs.  PCI is required in Kconfig.

2) Break up setup_netjet_s() into three separate internal functions.
This helps facilitate upcoming use of PCI hotplug API, and in addition
makes the code much easier to follow.

No code is changed, just moved around.  I even kept the out-of-favor
"return(0)" style used in the current source code.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
hifive-unleashed-5.1
Jeff Garzik 2007-07-15 04:25:35 -04:00
parent 881ebdc9f4
commit 0566a66382
1 changed files with 116 additions and 94 deletions
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100
drivers/isdn/hisax/nj_s.c
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@ -148,30 +148,11 @@ NETjet_S_card_msg(struct IsdnCardState *cs, int mt, void *arg)
return(0);
}
static struct pci_dev *dev_netjet __devinitdata = NULL;
int __devinit
setup_netjet_s(struct IsdnCard *card)
static int __devinit njs_pci_probe(struct pci_dev *dev_netjet,
struct IsdnCardState *cs)
{
int bytecnt,cfg;
struct IsdnCardState *cs = card->cs;
char tmp[64];
int cfg;
#ifdef __BIG_ENDIAN
#error "not running on big endian machines now"
#endif
strcpy(tmp, NETjet_S_revision);
printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_NETJET_S)
return(0);
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
#ifdef CONFIG_PCI
for ( ;; )
{
if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
if (pci_enable_device(dev_netjet))
return(0);
pci_set_master(dev_netjet);
@ -202,10 +183,13 @@ setup_netjet_s(struct IsdnCard *card)
return(0);
}
/* end new code */
} else {
printk(KERN_WARNING "NETjet-S: No PCI card found\n");
return(0);
}
return(1);
}
static int __devinit njs_cs_init(struct IsdnCard *card,
struct IsdnCardState *cs)
{
cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
@ -228,27 +212,23 @@ setup_netjet_s(struct IsdnCard *card)
switch ( ( ( NETjet_ReadIC( cs, ISAC_RBCH ) >> 5 ) & 3 ) )
{
case 0 :
break;
return 1; /* end loop */
case 3 :
printk( KERN_WARNING "NETjet-S: NETspider-U PCI card found\n" );
continue;
return -1; /* continue looping */
default :
printk( KERN_WARNING "NETjet-S: No PCI card found\n" );
return 0;
return 0; /* end loop & function */
}
break;
}
#else
return 1; /* end loop */
}
printk(KERN_WARNING "NETjet-S: NO_PCI_BIOS\n");
printk(KERN_WARNING "NETjet-S: unable to config NETJET-S PCI\n");
return (0);
#endif /* CONFIG_PCI */
bytecnt = 256;
static int __devinit njs_cs_init_rest(struct IsdnCard *card,
struct IsdnCardState *cs)
{
const int bytecnt = 256;
printk(KERN_INFO
"NETjet-S: %s card configured at %#lx IRQ %d\n",
@ -273,5 +253,47 @@ setup_netjet_s(struct IsdnCard *card)
cs->irq_func = &netjet_s_interrupt;
cs->irq_flags |= IRQF_SHARED;
ISACVersion(cs, "NETjet-S:");
return (1);
}
static struct pci_dev *dev_netjet __devinitdata = NULL;
int __devinit
setup_netjet_s(struct IsdnCard *card)
{
int ret;
struct IsdnCardState *cs = card->cs;
char tmp[64];
#ifdef __BIG_ENDIAN
#error "not running on big endian machines now"
#endif
strcpy(tmp, NETjet_S_revision);
printk(KERN_INFO "HiSax: Traverse Tech. NETjet-S driver Rev. %s\n", HiSax_getrev(tmp));
if (cs->typ != ISDN_CTYPE_NETJET_S)
return(0);
test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
for ( ;; )
{
if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
ret = njs_pci_probe(dev_netjet, cs);
if (!ret)
return(0);
} else {
printk(KERN_WARNING "NETjet-S: No PCI card found\n");
return(0);
}
ret = njs_cs_init(card, cs);
if (!ret)
return(0);
if (ret > 0)
break;
/* otherwise, ret < 0, continue looping */
}
return njs_cs_init_rest(card, cs);
}