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ACPI / hotplug / PCI: Rework acpiphp_handle_to_bridge()

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Using the hotplug context objects introduced previously rework the
ACPI-based PCI hotplug (ACPIPHP) core code to get to acpiphp_bridge
objects associated with hotplug bridges from those context objects
rather than from the global list of hotplug bridges.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2013-07-13 23:27:24 +02:00
parent 8783127343
commit ed13febf8f
1 changed files with 11 additions and 9 deletions
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20
drivers/pci/hotplug/acpiphp_glue.c
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@ -454,18 +454,20 @@ static int detect_ejectable_slots(acpi_handle handle)
static struct acpiphp_bridge *acpiphp_handle_to_bridge(acpi_handle handle)
{
struct acpiphp_bridge *bridge;
struct acpiphp_context *context;
struct acpiphp_bridge *bridge = NULL;
mutex_lock(&bridge_mutex);
list_for_each_entry(bridge, &bridge_list, list)
if (bridge->handle == handle) {
mutex_lock(&acpiphp_context_lock);
context = acpiphp_get_context(handle);
if (context) {
bridge = context->bridge;
if (bridge)
get_bridge(bridge);
mutex_unlock(&bridge_mutex);
return bridge;
}
mutex_unlock(&bridge_mutex);
return NULL;
acpiphp_put_context(context);
}
mutex_unlock(&acpiphp_context_lock);
return bridge;
}
static void cleanup_bridge(struct acpiphp_bridge *bridge)