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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-13 23:27:25 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-07-23 04:00:22 +0200
commit7342798d0ab850a630877a362bc5a4f033100f37 (patch)
treee26c9ce3fabddb86b440a0b5ccf1edb0905a8017
parentbbd34fcdd1b201e996235731a7c98fd5197d9e51 (diff)
ACPI / hotplug / PCI: Drop sun field from struct acpiphp_slot
If the slot unique number is passed as an additional argument to acpiphp_register_hotplug_slot(), the 'sun' field in struct acpiphp_slot is only used by ibm_[s|g]et_attention_status(), but then it's more efficient to store it in struct slot. Thus move the 'sun' field from struct acpiphp_slot to struct slot changing its data type to unsigned int in the process, and redefine acpiphp_register_hotplug_slot() to take the slot number as separate argument. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
-rw-r--r--drivers/pci/hotplug/acpiphp.h5
-rw-r--r--drivers/pci/hotplug/acpiphp_core.c6
-rw-r--r--drivers/pci/hotplug/acpiphp_glue.c7
-rw-r--r--drivers/pci/hotplug/acpiphp_ibm.c2
4 files changed, 10 insertions, 10 deletions
diff --git a/drivers/pci/hotplug/acpiphp.h b/drivers/pci/hotplug/acpiphp.h
index 76a1c979a25..4f10aec81b8 100644
--- a/drivers/pci/hotplug/acpiphp.h
+++ b/drivers/pci/hotplug/acpiphp.h
@@ -60,6 +60,7 @@ struct slot {
struct hotplug_slot *hotplug_slot;
struct acpiphp_slot *acpi_slot;
struct hotplug_slot_info info;
+ unsigned int sun; /* ACPI _SUN (Slot User Number) value */
};
static inline const char *slot_name(struct slot *slot)
@@ -106,8 +107,6 @@ struct acpiphp_slot {
struct mutex crit_sect;
u8 device; /* pci device# */
-
- unsigned long long sun; /* ACPI _SUN (slot unique number) */
u32 flags; /* see below */
};
@@ -179,7 +178,7 @@ struct acpiphp_attention_info
/* acpiphp_core.c */
int acpiphp_register_attention(struct acpiphp_attention_info*info);
int acpiphp_unregister_attention(struct acpiphp_attention_info *info);
-int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot);
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *slot, unsigned int sun);
void acpiphp_unregister_hotplug_slot(struct acpiphp_slot *slot);
/* acpiphp_glue.c */
diff --git a/drivers/pci/hotplug/acpiphp_core.c b/drivers/pci/hotplug/acpiphp_core.c
index ca8127950fc..1798740f7e1 100644
--- a/drivers/pci/hotplug/acpiphp_core.c
+++ b/drivers/pci/hotplug/acpiphp_core.c
@@ -290,7 +290,8 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
}
/* callback routine to initialize 'struct slot' for each slot */
-int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
+int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot,
+ unsigned int sun)
{
struct slot *slot;
int retval = -ENOMEM;
@@ -317,7 +318,8 @@ int acpiphp_register_hotplug_slot(struct acpiphp_slot *acpiphp_slot)
slot->hotplug_slot->info->adapter_status = acpiphp_get_adapter_status(slot->acpi_slot);
acpiphp_slot->slot = slot;
- snprintf(name, SLOT_NAME_SIZE, "%llu", slot->acpi_slot->sun);
+ slot->sun = sun;
+ snprintf(name, SLOT_NAME_SIZE, "%u", sun);
retval = pci_hp_register(slot->hotplug_slot,
acpiphp_slot->bridge->pci_bus,
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index b306e993ad0..a251071b7d7 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -352,16 +352,15 @@ static acpi_status register_slot(acpi_handle handle, u32 lvl, void *data,
if (ACPI_FAILURE(status))
sun = bridge->nr_slots;
- slot->sun = sun;
dbg("found ACPI PCI Hotplug slot %llu at PCI %04x:%02x:%02x\n",
- slot->sun, pci_domain_nr(pbus), pbus->number, device);
+ sun, pci_domain_nr(pbus), pbus->number, device);
- retval = acpiphp_register_hotplug_slot(slot);
+ retval = acpiphp_register_hotplug_slot(slot, sun);
if (retval) {
bridge->nr_slots--;
if (retval == -EBUSY)
warn("Slot %llu already registered by another "
- "hotplug driver\n", slot->sun);
+ "hotplug driver\n", sun);
else
warn("acpiphp_register_hotplug_slot failed "
"(err code = 0x%x)\n", retval);
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
index c35e8ad6db0..8d45f6d6954 100644
--- a/drivers/pci/hotplug/acpiphp_ibm.c
+++ b/drivers/pci/hotplug/acpiphp_ibm.c
@@ -66,7 +66,7 @@ do { \
#define IBM_HARDWARE_ID1 "IBM37D0"
#define IBM_HARDWARE_ID2 "IBM37D4"
-#define hpslot_to_sun(A) (((struct slot *)((A)->private))->acpi_slot->sun)
+#define hpslot_to_sun(A) (((struct slot *)((A)->private))->sun)
/* union apci_descriptor - allows access to the
* various device descriptors that are embedded in the