linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / drivers / acpi / pci_irq.c

diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index feda034..65aee79 100644 (file)
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -24,6 +24,7 @@
  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  */
 
+#include <linux/config.h>
 
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -54,9 +55,10 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
        struct list_head *node = NULL;
        struct acpi_prt_entry *entry = NULL;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_find_prt_entry");
 
        if (!acpi_prt.count)
-               return NULL;
+               return_PTR(NULL);
 
        /*
         * Parse through all PRT entries looking for a match on the specified
@@ -71,12 +73,12 @@ static struct acpi_prt_entry *acpi_pci_irq_find_prt_entry(int segment,
                    && (device == entry->id.device)
                    && (pin == entry->pin)) {
                        spin_unlock(&acpi_prt_lock);
-                       return entry;
+                       return_PTR(entry);
                }
        }
 
        spin_unlock(&acpi_prt_lock);
-       return NULL;
+       return_PTR(NULL);
 }
 
 static int
@@ -85,13 +87,14 @@ acpi_pci_irq_add_entry(acpi_handle handle,
 {
        struct acpi_prt_entry *entry = NULL;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_add_entry");
 
        if (!prt)
-               return -EINVAL;
+               return_VALUE(-EINVAL);
 
        entry = kmalloc(sizeof(struct acpi_prt_entry), GFP_KERNEL);
        if (!entry)
-               return -ENOMEM;
+               return_VALUE(-ENOMEM);
        memset(entry, 0, sizeof(struct acpi_prt_entry));
 
        entry->id.segment = segment;
@@ -138,7 +141,7 @@ acpi_pci_irq_add_entry(acpi_handle handle,
        acpi_prt.count++;
        spin_unlock(&acpi_prt_lock);
 
-       return 0;
+       return_VALUE(0);
 }
 
 static void
@@ -160,10 +163,11 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
        struct acpi_pci_routing_table *entry = NULL;
        static int first_time = 1;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_add_prt");
 
        pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
        if (!pathname)
-               return -ENOMEM;
+               return_VALUE(-ENOMEM);
        memset(pathname, 0, ACPI_PATHNAME_MAX);
 
        if (first_time) {
@@ -193,24 +197,24 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
        kfree(pathname);
        status = acpi_get_irq_routing_table(handle, &buffer);
        if (status != AE_BUFFER_OVERFLOW) {
-               ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRT [%s]",
-                               acpi_format_exception(status)));
-               return -ENODEV;
+               ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PRT [%s]\n",
+                                 acpi_format_exception(status)));
+               return_VALUE(-ENODEV);
        }
 
        prt = kmalloc(buffer.length, GFP_KERNEL);
        if (!prt) {
-               return -ENOMEM;
+               return_VALUE(-ENOMEM);
        }
        memset(prt, 0, buffer.length);
        buffer.pointer = prt;
 
        status = acpi_get_irq_routing_table(handle, &buffer);
        if (ACPI_FAILURE(status)) {
-               ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRT [%s]",
-                               acpi_format_exception(status)));
+               ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Error evaluating _PRT [%s]\n",
+                                 acpi_format_exception(status)));
                kfree(buffer.pointer);
-               return -ENODEV;
+               return_VALUE(-ENODEV);
        }
 
        entry = prt;
@@ -223,7 +227,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus)
 
        kfree(prt);
 
-       return 0;
+       return_VALUE(0);
 }
 
 void acpi_pci_irq_del_prt(int segment, int bus)
@@ -258,15 +262,16 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
 {
        int irq;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_allocate_irq");
 
        if (entry->link.handle) {
                irq = acpi_pci_link_allocate_irq(entry->link.handle,
                                                 entry->link.index, triggering,
                                                 polarity, link);
                if (irq < 0) {
-                       printk(KERN_WARNING PREFIX
-                                     "Invalid IRQ link routing entry\n");
-                       return -1;
+                       ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                                         "Invalid IRQ link routing entry\n"));
+                       return_VALUE(-1);
                }
        } else {
                irq = entry->link.index;
@@ -275,7 +280,7 @@ acpi_pci_allocate_irq(struct acpi_prt_entry *entry,
        }
 
        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found IRQ %d\n", irq));
-       return irq;
+       return_VALUE(irq);
 }
 
 static int
@@ -284,12 +289,13 @@ acpi_pci_free_irq(struct acpi_prt_entry *entry,
 {
        int irq;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_free_irq");
        if (entry->link.handle) {
                irq = acpi_pci_link_free_irq(entry->link.handle);
        } else {
                irq = entry->link.index;
        }
-       return irq;
+       return_VALUE(irq);
 }
 
 /*
@@ -309,6 +315,7 @@ acpi_pci_irq_lookup(struct pci_bus *bus,
        int bus_nr = bus->number;
        int ret;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_lookup");
 
        ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                          "Searching for PRT entry for %02x:%02x:%02x[%c]\n",
@@ -317,11 +324,11 @@ acpi_pci_irq_lookup(struct pci_bus *bus,
        entry = acpi_pci_irq_find_prt_entry(segment, bus_nr, device, pin);
        if (!entry) {
                ACPI_DEBUG_PRINT((ACPI_DB_INFO, "PRT entry not found\n"));
-               return -1;
+               return_VALUE(-1);
        }
 
        ret = func(entry, triggering, polarity, link);
-       return ret;
+       return_VALUE(ret);
 }
 
 /*
@@ -339,9 +346,10 @@ acpi_pci_irq_derive(struct pci_dev *dev,
        int irq = -1;
        u8 bridge_pin = 0;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_derive");
 
        if (!dev)
-               return -EINVAL;
+               return_VALUE(-EINVAL);
 
        /* 
         * Attempt to derive an IRQ for this device from a parent bridge's
@@ -358,7 +366,7 @@ acpi_pci_irq_derive(struct pci_dev *dev,
                                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                                  "No interrupt pin configured for device %s\n",
                                                  pci_name(bridge)));
-                               return -1;
+                               return_VALUE(-1);
                        }
                        /* Pin is from 0 to 3 */
                        bridge_pin--;
@@ -371,15 +379,16 @@ acpi_pci_irq_derive(struct pci_dev *dev,
        }
 
        if (irq < 0) {
-               printk(KERN_WARNING PREFIX "Unable to derive IRQ for device %s\n",
-                             pci_name(dev));
-               return -1;
+               ACPI_DEBUG_PRINT((ACPI_DB_WARN,
+                                 "Unable to derive IRQ for device %s\n",
+                                 pci_name(dev)));
+               return_VALUE(-1);
        }
 
        ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Derive IRQ %d for device %s from %s\n",
                          irq, pci_name(dev), pci_name(bridge)));
 
-       return irq;
+       return_VALUE(irq);
 }
 
 /*
@@ -397,22 +406,24 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
        char *link = NULL;
        int rc;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_enable");
 
        if (!dev)
-               return -EINVAL;
+               return_VALUE(-EINVAL);
 
        pin = dev->pin;
        if (!pin) {
                ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                                  "No interrupt pin configured for device %s\n",
                                  pci_name(dev)));
-               return 0;
+               return_VALUE(0);
        }
        pin--;
 
        if (!dev->bus) {
-               printk(KERN_ERR PREFIX "Invalid (NULL) 'bus' field\n");
-               return -ENODEV;
+               ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
+                                 "Invalid (NULL) 'bus' field\n"));
+               return_VALUE(-ENODEV);
        }
 
        /* 
@@ -444,10 +455,10 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
                        printk(" - using IRQ %d\n", dev->irq);
                        acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE,
                                          ACPI_ACTIVE_LOW);
-                       return 0;
+                       return_VALUE(0);
                } else {
                        printk("\n");
-                       return 0;
+                       return_VALUE(0);
                }
        }
 
@@ -455,7 +466,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
        if (rc < 0) {
                printk(KERN_WARNING PREFIX "PCI Interrupt %s[%c]: failed "
                       "to register GSI\n", pci_name(dev), ('A' + pin));
-               return rc;
+               return_VALUE(rc);
        }
        dev->irq = rc;
 
@@ -469,7 +480,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev)
               (triggering == ACPI_LEVEL_SENSITIVE) ? "level" : "edge",
               (polarity == ACPI_ACTIVE_LOW) ? "low" : "high", dev->irq);
 
-       return 0;
+       return_VALUE(0);
 }
 
 EXPORT_SYMBOL(acpi_pci_irq_enable);
@@ -486,13 +497,14 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
        int triggering = ACPI_LEVEL_SENSITIVE;
        int polarity = ACPI_ACTIVE_LOW;
 
+       ACPI_FUNCTION_TRACE("acpi_pci_irq_disable");
 
        if (!dev || !dev->bus)
-               return;
+               return_VOID;
 
        pin = dev->pin;
        if (!pin)
-               return;
+               return_VOID;
        pin--;
 
        /*
@@ -510,7 +522,7 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
                                          &triggering, &polarity, NULL,
                                          acpi_pci_free_irq);
        if (gsi < 0)
-               return;
+               return_VOID;
 
        /*
         * TBD: It might be worth clearing dev->irq by magic constant
@@ -522,5 +534,5 @@ void acpi_pci_irq_disable(struct pci_dev *dev)
 
        acpi_unregister_gsi(gsi);
 
-       return;
+       return_VOID;
 }