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drivers/network/pcnet: Only allocate a local softc in probe() if one isn't set.

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This commit is contained in:
Augustin Cavalier
2025-01-27 12:46:08 -05:00
parent 1047530b8f
commit 84fb1209cd
1 changed files with 15 additions and 7 deletions
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src/add-ons/kernel/drivers/network/ether/pcnet/dev/pcn/if_pcn.c
+15 -7
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@@ -504,26 +504,33 @@ pcn_probe(dev)
device_t dev;
{
const struct pcn_type *t;
struct pcn_softc *sc;
struct pcn_softc *sc, *local_sc;
int rid;
u_int32_t chip_id;
#ifdef __HAIKU__
sc = __builtin_alloca(offsetof(struct pcn_softc, pcn_ldata));
device_set_softc(dev, sc);
#endif
t = pcn_match(pci_get_vendor(dev), pci_get_device(dev));
if (t == NULL)
return (ENXIO);
sc = device_get_softc(dev);
#ifdef __HAIKU__
local_sc = NULL;
if (sc == NULL) {
sc = local_sc = __builtin_alloca(offsetof(struct pcn_softc, pcn_ldata));
device_set_softc(dev, local_sc);
}
#endif
/*
* Temporarily map the I/O space so we can read the chip ID register.
*/
rid = PCN_RID;
sc->pcn_res = bus_alloc_resource_any(dev, PCN_RES, &rid, RF_ACTIVE);
if (sc->pcn_res == NULL) {
#ifdef __HAIKU__
if (local_sc != NULL)
device_set_softc(dev, NULL);
#endif
device_printf(dev, "couldn't map ports/memory\n");
return(ENXIO);
}
@@ -535,7 +542,8 @@ pcn_probe(dev)
bus_release_resource(dev, PCN_RES, PCN_RID, sc->pcn_res);
#ifdef __HAIKU__
device_set_softc(dev, NULL);
if (local_sc != NULL)
device_set_softc(dev, NULL);
#endif
switch((chip_id >> 12) & PART_MASK) {