diff options
Diffstat (limited to 'drivers/pci/hotplug/acpiphp_ibm.c')
| -rw-r--r-- | drivers/pci/hotplug/acpiphp_ibm.c | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c index 6ca23998ee8f..2f6d3a1c1726 100644 --- a/drivers/pci/hotplug/acpiphp_ibm.c +++ b/drivers/pci/hotplug/acpiphp_ibm.c @@ -154,7 +154,8 @@ static union apci_descriptor *ibm_slot_from_id(int id) ibm_slot_done: if (ret) { ret = kmalloc(sizeof(union apci_descriptor), GFP_KERNEL); - memcpy(ret, des, sizeof(union apci_descriptor)); + if (ret) + memcpy(ret, des, sizeof(union apci_descriptor)); } kfree(table); return ret; @@ -175,8 +176,13 @@ static int ibm_set_attention_status(struct hotplug_slot *slot, u8 status) acpi_status stat; unsigned long long rc; union apci_descriptor *ibm_slot; + int id = hpslot_to_sun(slot); - ibm_slot = ibm_slot_from_id(hpslot_to_sun(slot)); + ibm_slot = ibm_slot_from_id(id); + if (!ibm_slot) { + pr_err("APLS null ACPI descriptor for slot %d\n", id); + return -ENODEV; + } pr_debug("%s: set slot %d (%d) attention status to %d\n", __func__, ibm_slot->slot.slot_num, ibm_slot->slot.slot_id, @@ -215,8 +221,13 @@ static int ibm_set_attention_status(struct hotplug_slot *slot, u8 status) static int ibm_get_attention_status(struct hotplug_slot *slot, u8 *status) { union apci_descriptor *ibm_slot; + int id = hpslot_to_sun(slot); - ibm_slot = ibm_slot_from_id(hpslot_to_sun(slot)); + ibm_slot = ibm_slot_from_id(id); + if (!ibm_slot) { + pr_err("APLS null ACPI descriptor for slot %d\n", id); + return -ENODEV; + } if (ibm_slot->slot.attn & 0xa0 || ibm_slot->slot.status[1] & 0x08) *status = 1; @@ -325,7 +336,7 @@ static int ibm_get_table_from_acpi(char **bufp) } size = 0; - for (i=0; i<package->package.count; i++) { + for (i = 0; i < package->package.count; i++) { memcpy(&lbuf[size], package->package.elements[i].buffer.pointer, package->package.elements[i].buffer.length); |