diff options
Diffstat (limited to 'drivers/ssb')
| -rw-r--r-- | drivers/ssb/driver_chipcommon.c | 2 | ||||
| -rw-r--r-- | drivers/ssb/pci.c | 5 | ||||
| -rw-r--r-- | drivers/ssb/sprom.c | 14 |
3 files changed, 21 insertions, 0 deletions
diff --git a/drivers/ssb/driver_chipcommon.c b/drivers/ssb/driver_chipcommon.c index 59c3c0fdbecd..59ae76bace14 100644 --- a/drivers/ssb/driver_chipcommon.c +++ b/drivers/ssb/driver_chipcommon.c @@ -233,6 +233,8 @@ void ssb_chipcommon_init(struct ssb_chipcommon *cc) { if (!cc->dev) return; /* We don't have a ChipCommon */ + if (cc->dev->id.revision >= 11) + cc->status = chipco_read32(cc, SSB_CHIPCO_CHIPSTAT); ssb_pmu_init(cc); chipco_powercontrol_init(cc); ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST); diff --git a/drivers/ssb/pci.c b/drivers/ssb/pci.c index 9e50896233aa..a4b2b99f2c80 100644 --- a/drivers/ssb/pci.c +++ b/drivers/ssb/pci.c @@ -620,6 +620,11 @@ static int ssb_pci_sprom_get(struct ssb_bus *bus, int err = -ENOMEM; u16 *buf; + if (!ssb_is_sprom_available(bus)) { + ssb_printk(KERN_ERR PFX "No SPROM available!\n"); + return -ENODEV; + } + buf = kcalloc(SSB_SPROMSIZE_WORDS_R123, sizeof(u16), GFP_KERNEL); if (!buf) goto out; diff --git a/drivers/ssb/sprom.c b/drivers/ssb/sprom.c index d0e6762fec50..83bc088b941d 100644 --- a/drivers/ssb/sprom.c +++ b/drivers/ssb/sprom.c @@ -175,3 +175,17 @@ const struct ssb_sprom *ssb_get_fallback_sprom(void) { return fallback_sprom; } + +/* http://bcm-v4.sipsolutions.net/802.11/IsSpromAvailable */ +bool ssb_is_sprom_available(struct ssb_bus *bus) +{ + /* status register only exists on chipcomon rev >= 11 and we need check + for >= 31 only */ + /* this routine differs from specs as we do not access SPROM directly + on PCMCIA */ + if (bus->bustype == SSB_BUSTYPE_PCI && + bus->chipco.dev->id.revision >= 31) + return bus->chipco.capabilities & SSB_CHIPCO_CAP_SPROM; + + return true; +} |