diff options
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/agp/intel-agp.h | 7 | ||||
| -rw-r--r-- | drivers/char/apm-emulation.c | 2 | ||||
| -rw-r--r-- | drivers/char/hpet.c | 25 | ||||
| -rw-r--r-- | drivers/char/random.c | 15 |
4 files changed, 43 insertions, 6 deletions
diff --git a/drivers/char/agp/intel-agp.h b/drivers/char/agp/intel-agp.h index 999803ce10d..5da67f165af 100644 --- a/drivers/char/agp/intel-agp.h +++ b/drivers/char/agp/intel-agp.h @@ -90,9 +90,10 @@ #define G4x_GMCH_SIZE_MASK (0xf << 8) #define G4x_GMCH_SIZE_1M (0x1 << 8) #define G4x_GMCH_SIZE_2M (0x3 << 8) -#define G4x_GMCH_SIZE_VT_1M (0x9 << 8) -#define G4x_GMCH_SIZE_VT_1_5M (0xa << 8) -#define G4x_GMCH_SIZE_VT_2M (0xc << 8) +#define G4x_GMCH_SIZE_VT_EN (0x8 << 8) +#define G4x_GMCH_SIZE_VT_1M (G4x_GMCH_SIZE_1M | G4x_GMCH_SIZE_VT_EN) +#define G4x_GMCH_SIZE_VT_1_5M ((0x2 << 8) | G4x_GMCH_SIZE_VT_EN) +#define G4x_GMCH_SIZE_VT_2M (G4x_GMCH_SIZE_2M | G4x_GMCH_SIZE_VT_EN) #define GFX_FLSH_CNTL 0x2170 /* 915+ */ diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c index 548708c4b2b..a7346ab97a3 100644 --- a/drivers/char/apm-emulation.c +++ b/drivers/char/apm-emulation.c @@ -606,7 +606,7 @@ static int apm_suspend_notifier(struct notifier_block *nb, return NOTIFY_OK; /* interrupted by signal */ - return NOTIFY_BAD; + return notifier_from_errno(err); case PM_POST_SUSPEND: /* diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c index 051474c65b7..34d6a1cab8d 100644 --- a/drivers/char/hpet.c +++ b/drivers/char/hpet.c @@ -163,11 +163,32 @@ static irqreturn_t hpet_interrupt(int irq, void *data) * This has the effect of treating non-periodic like periodic. */ if ((devp->hd_flags & (HPET_IE | HPET_PERIODIC)) == HPET_IE) { - unsigned long m, t; + unsigned long m, t, mc, base, k; + struct hpet __iomem *hpet = devp->hd_hpet; + struct hpets *hpetp = devp->hd_hpets; t = devp->hd_ireqfreq; m = read_counter(&devp->hd_timer->hpet_compare); - write_counter(t + m, &devp->hd_timer->hpet_compare); + mc = read_counter(&hpet->hpet_mc); + /* The time for the next interrupt would logically be t + m, + * however, if we are very unlucky and the interrupt is delayed + * for longer than t then we will completely miss the next + * interrupt if we set t + m and an application will hang. + * Therefore we need to make a more complex computation assuming + * that there exists a k for which the following is true: + * k * t + base < mc + delta + * (k + 1) * t + base > mc + delta + * where t is the interval in hpet ticks for the given freq, + * base is the theoretical start value 0 < base < t, + * mc is the main counter value at the time of the interrupt, + * delta is the time it takes to write the a value to the + * comparator. + * k may then be computed as (mc - base + delta) / t . + */ + base = mc % t; + k = (mc - base + hpetp->hp_delta) / t; + write_counter(t * (k + 1) + base, + &devp->hd_timer->hpet_compare); } if (devp->hd_flags & HPET_SHARED_IRQ) diff --git a/drivers/char/random.c b/drivers/char/random.c index d4ddeba5668..729281961f2 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1523,6 +1523,21 @@ __u32 secure_ip_id(__be32 daddr) return half_md4_transform(hash, keyptr->secret); } +__u32 secure_ipv6_id(const __be32 daddr[4]) +{ + const struct keydata *keyptr; + __u32 hash[4]; + + keyptr = get_keyptr(); + + hash[0] = (__force __u32)daddr[0]; + hash[1] = (__force __u32)daddr[1]; + hash[2] = (__force __u32)daddr[2]; + hash[3] = (__force __u32)daddr[3]; + + return half_md4_transform(hash, keyptr->secret); +} + #ifdef CONFIG_INET __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, |