intel-iommu: Fix enabling snooping feature by mistake
[linux-2.6.git] / drivers / char / hpet.c
index 2908a0e..4a9f349 100644 (file)
@@ -46,7 +46,7 @@
 /*
  * The High Precision Event Timer driver.
  * This driver is closely modelled after the rtc.c driver.
- * http://www.intel.com/hardwaredesign/hpetspec.htm
+ * http://www.intel.com/hardwaredesign/hpetspec_1.pdf
  */
 #define        HPET_USER_FREQ  (64)
 #define        HPET_DRIFT      (500)
@@ -72,7 +72,7 @@ static u32 hpet_nhpet, hpet_max_freq = HPET_USER_FREQ;
 #ifdef CONFIG_IA64
 static void __iomem *hpet_mctr;
 
-static cycle_t read_hpet(void)
+static cycle_t read_hpet(struct clocksource *cs)
 {
        return (cycle_t)read_counter((void __iomem *)hpet_mctr);
 }
@@ -219,12 +219,12 @@ static void hpet_timer_set_irq(struct hpet_dev *devp)
        for (irq = find_first_bit(&v, HPET_MAX_IRQ); irq < HPET_MAX_IRQ;
                irq = find_next_bit(&v, HPET_MAX_IRQ, 1 + irq)) {
 
-               if (irq >= NR_IRQS) {
+               if (irq >= nr_irqs) {
                        irq = HPET_MAX_IRQ;
                        break;
                }
 
-               gsi = acpi_register_gsi(irq, ACPI_LEVEL_SENSITIVE,
+               gsi = acpi_register_gsi(NULL, irq, ACPI_LEVEL_SENSITIVE,
                                        ACPI_ACTIVE_LOW);
                if (gsi > 0)
                        break;
@@ -427,9 +427,6 @@ static int hpet_release(struct inode *inode, struct file *file)
        if (irq)
                free_irq(irq, devp);
 
-       if (file->f_flags & FASYNC)
-               hpet_fasync(-1, file, 0);
-
        file->private_data = NULL;
        return 0;
 }
@@ -716,7 +713,7 @@ static struct ctl_table_header *sysctl_header;
  */
 #define        TICK_CALIBRATE  (1000UL)
 
-static unsigned long hpet_calibrate(struct hpets *hpetp)
+static unsigned long __hpet_calibrate(struct hpets *hpetp)
 {
        struct hpet_timer __iomem *timer = NULL;
        unsigned long t, m, count, i, flags, start;
@@ -753,6 +750,26 @@ static unsigned long hpet_calibrate(struct hpets *hpetp)
        return (m - start) / i;
 }
 
+static unsigned long hpet_calibrate(struct hpets *hpetp)
+{
+       unsigned long ret = -1;
+       unsigned long tmp;
+
+       /*
+        * Try to calibrate until return value becomes stable small value.
+        * If SMI interruption occurs in calibration loop, the return value
+        * will be big. This avoids its impact.
+        */
+       for ( ; ; ) {
+               tmp = __hpet_calibrate(hpetp);
+               if (ret <= tmp)
+                       break;
+               ret = tmp;
+       }
+
+       return ret;
+}
+
 int hpet_alloc(struct hpet_data *hdp)
 {
        u64 cap, mcfg;
@@ -897,8 +914,6 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
                hdp->hd_address = ioremap(addr.minimum, addr.address_length);
 
                if (hpet_is_known(hdp)) {
-                       printk(KERN_DEBUG "%s: 0x%lx is busy\n",
-                               __func__, hdp->hd_phys_address);
                        iounmap(hdp->hd_address);
                        return AE_ALREADY_EXISTS;
                }
@@ -914,8 +929,6 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
                                                HPET_RANGE_SIZE);
 
                if (hpet_is_known(hdp)) {
-                       printk(KERN_DEBUG "%s: 0x%lx is busy\n",
-                               __func__, hdp->hd_phys_address);
                        iounmap(hdp->hd_address);
                        return AE_ALREADY_EXISTS;
                }
@@ -926,7 +939,7 @@ static acpi_status hpet_resources(struct acpi_resource *res, void *data)
                irqp = &res->data.extended_irq;
 
                for (i = 0; i < irqp->interrupt_count; i++) {
-                       irq = acpi_register_gsi(irqp->interrupts[i],
+                       irq = acpi_register_gsi(NULL, irqp->interrupts[i],
                                      irqp->triggering, irqp->polarity);
                        if (irq < 0)
                                return AE_ERROR;