diff options
| author | Bjorn Helgaas <bjorn.helgaas@hp.com> | 2009-02-17 22:00:55 +0100 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-03-17 06:53:29 +0100 |
| commit | 5f0dccaa81e239477413d0def1133850530f1bbe (patch) | |
| tree | e1b07674a092d1ba39beada0c333e2be386f07b4 /drivers | |
| parent | ACPI: pci_link: remove unnecessary null pointer checks (diff) | |
| download | linux-5f0dccaa81e239477413d0def1133850530f1bbe.tar.xz linux-5f0dccaa81e239477413d0def1133850530f1bbe.zip | |
ACPI: pci_link: simplify list of link devices
We don't need a struct containing a count and a list_head; a simple
list_head is sufficient. The list iterators handle empty lists
fine.
Furthermore, we don't need to check for null list entries because we
only add non-null entries.
Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/pci_link.c | 32 |
1 files changed, 6 insertions, 26 deletions
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index dd9ebb9fda42..16e0f9d3d17c 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -86,16 +86,13 @@ struct acpi_pci_link_irq { }; struct acpi_pci_link { - struct list_head node; + struct list_head list; struct acpi_device *device; struct acpi_pci_link_irq irq; int refcnt; }; -static struct { - int count; - struct list_head entries; -} acpi_link; +static LIST_HEAD(acpi_link_list); static DEFINE_MUTEX(acpi_link_lock); /* -------------------------------------------------------------------------- @@ -479,19 +476,13 @@ static int acpi_irq_penalty[ACPI_MAX_IRQS] = { int __init acpi_irq_penalty_init(void) { - struct list_head *node; struct acpi_pci_link *link; int i; /* * Update penalties to facilitate IRQ balancing. */ - list_for_each(node, &acpi_link.entries) { - link = list_entry(node, struct acpi_pci_link, node); - if (!link) { - printk(KERN_ERR PREFIX "Invalid link context\n"); - continue; - } + list_for_each_entry(link, &acpi_link_list, list) { /* * reflect the possible and active irqs in the penalty table -- @@ -743,9 +734,7 @@ static int acpi_pci_link_add(struct acpi_device *device) printk("\n"); - /* TBD: Acquire/release lock */ - list_add_tail(&link->node, &acpi_link.entries); - acpi_link.count++; + list_add_tail(&link->list, &acpi_link_list); end: /* disable all links -- to be activated on use */ @@ -768,15 +757,9 @@ static int acpi_pci_link_resume(struct acpi_pci_link *link) static int irqrouter_resume(struct sys_device *dev) { - struct list_head *node; struct acpi_pci_link *link; - list_for_each(node, &acpi_link.entries) { - link = list_entry(node, struct acpi_pci_link, node); - if (!link) { - printk(KERN_ERR PREFIX "Invalid link context\n"); - continue; - } + list_for_each_entry(link, &acpi_link_list, list) { acpi_pci_link_resume(link); } return 0; @@ -789,7 +772,7 @@ static int acpi_pci_link_remove(struct acpi_device *device, int type) link = acpi_driver_data(device); mutex_lock(&acpi_link_lock); - list_del(&link->node); + list_del(&link->list); mutex_unlock(&acpi_link_lock); kfree(link); @@ -926,9 +909,6 @@ static int __init acpi_pci_link_init(void) acpi_irq_balance = 0; } - acpi_link.count = 0; - INIT_LIST_HEAD(&acpi_link.entries); - if (acpi_bus_register_driver(&acpi_pci_link_driver) < 0) return -ENODEV; |