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Date: Sat, 26 Aug 2006 21:30:38 -0700
From: "Om Narasimhan" <om.turyx@...il.com>
To: "Len Brown" <lenb@...nel.org>
Cc: linux-kernel@...r.kernel.org, kernel-janitors@...ts.osdl.org
Subject: Re: memory leak fix in acpi_memhotplug.c, kmalloc to kzalloc conversion.
On 8/26/06, Om Narasimhan <om.turyx@...il.com> wrote:
> On 8/26/06, Len Brown <len.brown@...el.com> wrote:
> > On Saturday 26 August 2006 20:21, Om Narasimhan wrote:
> > > Hi,
> > > This patch fixes one memory leak in drivers/acpi/acpi_memhotplug.c
> > > Replaces all kmalloc() calls succeeded by memset() to kzalloc() calls.
> > > Applies cleanly to 2.6.18-rc4. Compile tested.
> >
> > Compile testing is more effective is you use a .config that
> > builds each of the source files changed.
> I have compiled it with .config files resulting from targets
> 'allmodconfig' and 'allyesconfig'.
> > What tree is this patch against?
> > This line is already present (above the comment) in 2.6.18-rc4.
> This surprises me. This patch is against 2.6.18-rc4, git-pull -ed today morning.
> Maybe I should do one more git-pull?
It was my mistake. I, by mistake added one line extra.
The corrected patch is here.
It is against 2.6.18-rc4, applies cleanly and compile tested with
target 'allyesconfig'
Thanks,
Om. N.
drivers/acpi/ac.c | 4 +---
drivers/acpi/acpi_memhotplug.c | 14 ++++----------
drivers/acpi/asus_acpi.c | 3 +--
drivers/acpi/battery.c | 13 +++----------
drivers/acpi/bus.c | 3 +--
drivers/acpi/button.c | 4 +---
drivers/acpi/container.c | 4 +---
drivers/acpi/ec.c | 20 +++++---------------
drivers/acpi/fan.c | 3 +--
drivers/acpi/i2c_ec.c | 8 ++------
drivers/acpi/osl.c | 2 +-
drivers/acpi/pci_bind.c | 21 +++++----------------
drivers/acpi/pci_irq.c | 16 +++-------------
drivers/acpi/pci_link.c | 6 ++----
drivers/acpi/pci_root.c | 3 +--
drivers/acpi/power.c | 4 +---
drivers/acpi/processor_core.c | 4 +---
drivers/acpi/sbs.c | 4 +---
drivers/acpi/thermal.c | 13 +++----------
drivers/acpi/utils.c | 4 +---
20 files changed, 39 insertions(+), 114 deletions(-)
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index 96309b9..72738a5 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -221,11 +221,9 @@ static int acpi_ac_add(struct acpi_devic
if (!device)
return -EINVAL;
- ac = kmalloc(sizeof(struct acpi_ac), GFP_KERNEL);
+ ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
if (!ac)
return -ENOMEM;
- memset(ac, 0, sizeof(struct acpi_ac));
-
ac->device = device;
strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_AC_CLASS);
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index b0d4b14..59fd754 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -292,7 +292,6 @@ static int acpi_memory_disable_device(st
int result;
struct acpi_memory_info *info, *n;
-
/*
* Ask the VM to offline this memory range.
* Note: Assume that this function returns zero on success
@@ -323,7 +322,6 @@ static void acpi_memory_device_notify(ac
struct acpi_memory_device *mem_device;
struct acpi_device *device;
-
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
@@ -376,7 +374,6 @@ static void acpi_memory_device_notify(ac
"Unsupported event [0x%x]\n", event));
break;
}
-
return;
}
@@ -385,15 +382,12 @@ static int acpi_memory_device_add(struct
int result;
struct acpi_memory_device *mem_device = NULL;
-
if (!device)
return -EINVAL;
- mem_device = kmalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
+ mem_device = kzalloc(sizeof(struct acpi_memory_device), GFP_KERNEL);
if (!mem_device)
return -ENOMEM;
- memset(mem_device, 0, sizeof(struct acpi_memory_device));
-
INIT_LIST_HEAD(&mem_device->res_list);
mem_device->device = device;
sprintf(acpi_device_name(device), "%s", ACPI_MEMORY_DEVICE_NAME);
@@ -418,14 +412,14 @@ static int acpi_memory_device_add(struct
static int acpi_memory_device_remove(struct acpi_device *device, int type)
{
struct acpi_memory_device *mem_device = NULL;
-
+ struct acpi_memory_info *info, *n;
if (!device || !acpi_driver_data(device))
return -EINVAL;
-
mem_device = (struct acpi_memory_device *)acpi_driver_data(device);
+ list_for_each_entry_safe(info, n, &mem_device->res_list, list)
+ kfree(info);
kfree(mem_device);
-
return 0;
}
diff --git a/drivers/acpi/asus_acpi.c b/drivers/acpi/asus_acpi.c
index e9ee4c5..937d9a4 100644
--- a/drivers/acpi/asus_acpi.c
+++ b/drivers/acpi/asus_acpi.c
@@ -1246,10 +1246,9 @@ static int asus_hotk_add(struct acpi_dev
ASUS_ACPI_VERSION);
hotk =
- (struct asus_hotk *)kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
+ (struct asus_hotk *)kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
if (!hotk)
return -ENOMEM;
- memset(hotk, 0, sizeof(struct asus_hotk));
hotk->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_HOTK_DEVICE_NAME);
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index 6e52217..8c0a02c 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -158,13 +158,11 @@ acpi_battery_get_info(struct acpi_batter
goto end;
}
- data.pointer = kmalloc(data.length, GFP_KERNEL);
+ data.pointer = kzalloc(data.length, GFP_KERNEL);
if (!data.pointer) {
result = -ENOMEM;
goto end;
}
- memset(data.pointer, 0, data.length);
-
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting _BIF"));
@@ -218,13 +216,11 @@ acpi_battery_get_status(struct acpi_batt
goto end;
}
- data.pointer = kmalloc(data.length, GFP_KERNEL);
+ data.pointer = kzalloc(data.length, GFP_KERNEL);
if (!data.pointer) {
result = -ENOMEM;
goto end;
}
- memset(data.pointer, 0, data.length);
-
status = acpi_extract_package(package, &format, &data);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Extracting _BST"));
@@ -692,11 +688,9 @@ static int acpi_battery_add(struct acpi_
if (!device)
return -EINVAL;
- battery = kmalloc(sizeof(struct acpi_battery), GFP_KERNEL);
+ battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
if (!battery)
return -ENOMEM;
- memset(battery, 0, sizeof(struct acpi_battery));
-
battery->device = device;
strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
@@ -727,7 +721,6 @@ static int acpi_battery_add(struct acpi_
acpi_battery_remove_fs(device);
kfree(battery);
}
-
return result;
}
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index b297769..24b9133 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -288,7 +288,6 @@ int acpi_bus_generate_event(struct acpi_
struct acpi_bus_event *event = NULL;
unsigned long flags = 0;
-
if (!device)
return -EINVAL;
@@ -296,7 +295,7 @@ int acpi_bus_generate_event(struct acpi_
if (!event_is_open)
return 0;
- event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
+ event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC);
if (!event)
return -ENOMEM;
diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index 5ef885e..bec7520 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -296,11 +296,9 @@ static int acpi_button_add(struct acpi_d
if (!device)
return -EINVAL;
- button = kmalloc(sizeof(struct acpi_button), GFP_KERNEL);
+ button = kzalloc(sizeof(struct acpi_button), GFP_KERNEL);
if (!button)
return -ENOMEM;
- memset(button, 0, sizeof(struct acpi_button));
-
button->device = device;
acpi_driver_data(device) = button;
diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c
index 871aa52..322d60e 100644
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -96,11 +96,9 @@ static int acpi_container_add(struct acp
return -EINVAL;
}
- container = kmalloc(sizeof(struct acpi_container), GFP_KERNEL);
+ container = kzalloc(sizeof(struct acpi_container), GFP_KERNEL);
if (!container)
return -ENOMEM;
-
- memset(container, 0, sizeof(struct acpi_container));
container->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_CONTAINER_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_CONTAINER_CLASS);
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index e5d7963..6c24b62 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -988,11 +988,9 @@ static int acpi_ec_poll_add(struct acpi_
if (!device)
return -EINVAL;
- ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
+ ec = kzalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
return -ENOMEM;
- memset(ec, 0, sizeof(union acpi_ec));
-
ec->common.handle = device->handle;
ec->common.uid = -1;
init_MUTEX(&ec->poll.sem);
@@ -1055,11 +1053,9 @@ static int acpi_ec_intr_add(struct acpi_
if (!device)
return -EINVAL;
- ec = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
+ ec = kzalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec)
return -ENOMEM;
- memset(ec, 0, sizeof(union acpi_ec));
-
ec->common.handle = device->handle;
ec->common.uid = -1;
atomic_set(&ec->intr.pending_gpe, 0);
@@ -1342,13 +1338,11 @@ static int __init acpi_ec_fake_ecdt(void
printk(KERN_INFO PREFIX "Try to make an fake ECDT\n");
- ec_ecdt = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
+ ec_ecdt = kzalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec_ecdt) {
ret = -ENOMEM;
goto error;
}
- memset(ec_ecdt, 0, sizeof(union acpi_ec));
-
status = acpi_get_devices(ACPI_EC_HID,
acpi_fake_ecdt_callback, NULL, NULL);
if (ACPI_FAILURE(status)) {
@@ -1387,11 +1381,9 @@ static int __init acpi_ec_poll_get_real_
/*
* Generate a temporary ec context to use until the namespace is scanned
*/
- ec_ecdt = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
+ ec_ecdt = kzalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec_ecdt)
return -ENOMEM;
- memset(ec_ecdt, 0, sizeof(union acpi_ec));
-
ec_ecdt->common.command_addr = ecdt_ptr->ec_control;
ec_ecdt->common.status_addr = ecdt_ptr->ec_control;
ec_ecdt->common.data_addr = ecdt_ptr->ec_data;
@@ -1432,11 +1424,9 @@ static int __init acpi_ec_intr_get_real_
/*
* Generate a temporary ec context to use until the namespace is scanned
*/
- ec_ecdt = kmalloc(sizeof(union acpi_ec), GFP_KERNEL);
+ ec_ecdt = kzalloc(sizeof(union acpi_ec), GFP_KERNEL);
if (!ec_ecdt)
return -ENOMEM;
- memset(ec_ecdt, 0, sizeof(union acpi_ec));
-
init_MUTEX(&ec_ecdt->intr.sem);
init_waitqueue_head(&ec_ecdt->intr.wait);
ec_ecdt->common.command_addr = ecdt_ptr->ec_control;
diff --git a/drivers/acpi/fan.c b/drivers/acpi/fan.c
index 045c894..9e73c98 100644
--- a/drivers/acpi/fan.c
+++ b/drivers/acpi/fan.c
@@ -186,10 +186,9 @@ static int acpi_fan_add(struct acpi_devi
if (!device)
return -EINVAL;
- fan = kmalloc(sizeof(struct acpi_fan), GFP_KERNEL);
+ fan = kzalloc(sizeof(struct acpi_fan), GFP_KERNEL);
if (!fan)
return -ENOMEM;
- memset(fan, 0, sizeof(struct acpi_fan));
fan->device = device;
strcpy(acpi_device_name(device), "Fan");
diff --git a/drivers/acpi/i2c_ec.c b/drivers/acpi/i2c_ec.c
index 84239d5..6b50de8 100644
--- a/drivers/acpi/i2c_ec.c
+++ b/drivers/acpi/i2c_ec.c
@@ -309,19 +309,15 @@ static int acpi_ec_hc_add(struct acpi_de
return -EINVAL;
}
- ec_hc = kmalloc(sizeof(struct acpi_ec_hc), GFP_KERNEL);
+ ec_hc = kzalloc(sizeof(struct acpi_ec_hc), GFP_KERNEL);
if (!ec_hc) {
return -ENOMEM;
}
- memset(ec_hc, 0, sizeof(struct acpi_ec_hc));
-
- smbus = kmalloc(sizeof(struct acpi_ec_smbus), GFP_KERNEL);
+ smbus = kzalloc(sizeof(struct acpi_ec_smbus), GFP_KERNEL);
if (!smbus) {
kfree(ec_hc);
return -ENOMEM;
}
- memset(smbus, 0, sizeof(struct acpi_ec_smbus));
-
ec_hc->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_EC_HC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_EC_HC_CLASS);
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index b7d1514..ee986de 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -625,7 +625,7 @@ acpi_status acpi_os_execute(acpi_execute
*/
dpc =
- kmalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),
+ kzalloc(sizeof(struct acpi_os_dpc) + sizeof(struct work_struct),
GFP_ATOMIC);
if (!dpc)
return_ACPI_STATUS(AE_NO_MEMORY);
diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c
index 1e2ae6e..ec55b3b 100644
--- a/drivers/acpi/pci_bind.c
+++ b/drivers/acpi/pci_bind.c
@@ -122,20 +122,17 @@ int acpi_pci_bind(struct acpi_device *de
if (!device || !device->parent)
return -EINVAL;
- pathname = kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+ pathname = kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return -ENOMEM;
- memset(pathname, 0, ACPI_PATHNAME_MAX);
buffer.length = ACPI_PATHNAME_MAX;
buffer.pointer = pathname;
- data = kmalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
+ data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
if (!data) {
kfree(pathname);
return -ENOMEM;
}
- memset(data, 0, sizeof(struct acpi_pci_data));
-
acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n",
pathname));
@@ -277,15 +274,12 @@ int acpi_pci_unbind(struct acpi_device *
char *pathname = NULL;
struct acpi_buffer buffer = { 0, NULL };
-
if (!device || !device->parent)
return -EINVAL;
- pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+ pathname = (char *)kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return -ENOMEM;
- memset(pathname, 0, ACPI_PATHNAME_MAX);
-
buffer.length = ACPI_PATHNAME_MAX;
buffer.pointer = pathname;
acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer);
@@ -332,11 +326,9 @@ acpi_pci_bind_root(struct acpi_device *d
struct acpi_buffer buffer = { 0, NULL };
- pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+ pathname = (char *)kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return -ENOMEM;
- memset(pathname, 0, ACPI_PATHNAME_MAX);
-
buffer.length = ACPI_PATHNAME_MAX;
buffer.pointer = pathname;
@@ -345,13 +337,11 @@ acpi_pci_bind_root(struct acpi_device *d
return -EINVAL;
}
- data = kmalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
+ data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL);
if (!data) {
kfree(pathname);
return -ENOMEM;
}
- memset(data, 0, sizeof(struct acpi_pci_data));
-
data->id = *id;
data->bus = bus;
device->ops.bind = acpi_pci_bind;
@@ -375,6 +365,5 @@ acpi_pci_bind_root(struct acpi_device *d
kfree(pathname);
if (result != 0)
kfree(data);
-
return result;
}
diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c
index feda034..b64c50a 100644
--- a/drivers/acpi/pci_irq.c
+++ b/drivers/acpi/pci_irq.c
@@ -85,21 +85,14 @@ acpi_pci_irq_add_entry(acpi_handle handl
{
struct acpi_prt_entry *entry = NULL;
-
- if (!prt)
- return -EINVAL;
-
- entry = kmalloc(sizeof(struct acpi_prt_entry), GFP_KERNEL);
+ entry = kzalloc(sizeof(struct acpi_prt_entry), GFP_KERNEL);
if (!entry)
return -ENOMEM;
- memset(entry, 0, sizeof(struct acpi_prt_entry));
-
entry->id.segment = segment;
entry->id.bus = bus;
entry->id.device = (prt->address >> 16) & 0xFFFF;
entry->id.function = prt->address & 0xFFFF;
entry->pin = prt->pin;
-
/*
* Type 1: Dynamic
* ---------------
@@ -161,11 +154,9 @@ int acpi_pci_irq_add_prt(acpi_handle han
static int first_time = 1;
- pathname = (char *)kmalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
+ pathname = (char *)kzalloc(ACPI_PATHNAME_MAX, GFP_KERNEL);
if (!pathname)
return -ENOMEM;
- memset(pathname, 0, ACPI_PATHNAME_MAX);
-
if (first_time) {
acpi_prt.count = 0;
INIT_LIST_HEAD(&acpi_prt.entries);
@@ -198,11 +189,10 @@ int acpi_pci_irq_add_prt(acpi_handle han
return -ENODEV;
}
- prt = kmalloc(buffer.length, GFP_KERNEL);
+ prt = kzalloc(buffer.length, GFP_KERNEL);
if (!prt) {
return -ENOMEM;
}
- memset(prt, 0, buffer.length);
buffer.pointer = prt;
status = acpi_get_irq_routing_table(handle, &buffer);
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 7f3e7e7..a67af5d 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -307,11 +307,10 @@ static int acpi_pci_link_set(struct acpi
if (!link || !irq)
return -EINVAL;
- resource = kmalloc(sizeof(*resource) + 1, GFP_ATOMIC);
+ resource = kzalloc(sizeof(*resource) + 1, GFP_ATOMIC);
if (!resource)
return -ENOMEM;
- memset(resource, 0, sizeof(*resource) + 1);
buffer.length = sizeof(*resource) + 1;
buffer.pointer = resource;
@@ -718,10 +717,9 @@ static int acpi_pci_link_add(struct acpi
if (!device)
return -EINVAL;
- link = kmalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
+ link = kzalloc(sizeof(struct acpi_pci_link), GFP_KERNEL);
if (!link)
return -ENOMEM;
- memset(link, 0, sizeof(struct acpi_pci_link));
link->device = device;
strcpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c
index 0984a1e..6b55f43 100644
--- a/drivers/acpi/pci_root.c
+++ b/drivers/acpi/pci_root.c
@@ -164,10 +164,9 @@ static int acpi_pci_root_add(struct acpi
if (!device)
return -EINVAL;
- root = kmalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
+ root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
if (!root)
return -ENOMEM;
- memset(root, 0, sizeof(struct acpi_pci_root));
INIT_LIST_HEAD(&root->node);
root->device = device;
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index fec225d..b73d9c3 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -535,11 +535,9 @@ static int acpi_power_add(struct acpi_de
if (!device)
return -EINVAL;
- resource = kmalloc(sizeof(struct acpi_power_resource), GFP_KERNEL);
+ resource = kzalloc(sizeof(struct acpi_power_resource), GFP_KERNEL);
if (!resource)
return -ENOMEM;
- memset(resource, 0, sizeof(struct acpi_power_resource));
-
resource->device = device;
strcpy(resource->name, device->pnp.bus_id);
strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index b13d644..e3943f4 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -615,11 +615,9 @@ static int acpi_processor_add(struct acp
if (!device)
return -EINVAL;
- pr = kmalloc(sizeof(struct acpi_processor), GFP_KERNEL);
+ pr = kzalloc(sizeof(struct acpi_processor), GFP_KERNEL);
if (!pr)
return -ENOMEM;
- memset(pr, 0, sizeof(struct acpi_processor));
-
pr->handle = device->handle;
strcpy(acpi_device_name(device), ACPI_PROCESSOR_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_PROCESSOR_CLASS);
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index db7b350..2819d54 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -1576,13 +1576,11 @@ static int acpi_sbs_add(struct acpi_devi
int id, cnt;
acpi_status status = AE_OK;
- sbs = kmalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
+ sbs = kzalloc(sizeof(struct acpi_sbs), GFP_KERNEL);
if (!sbs) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "kmalloc() failed\n"));
return -ENOMEM;
}
- memset(sbs, 0, sizeof(struct acpi_sbs));
-
cnt = 0;
while (cnt < 10) {
cnt++;
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 5753d06..bdb0353 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -902,13 +902,11 @@ acpi_thermal_write_trip_points(struct fi
int i = 0;
- limit_string = kmalloc(ACPI_THERMAL_MAX_LIMIT_STR_LEN, GFP_KERNEL);
+ limit_string = kzalloc(ACPI_THERMAL_MAX_LIMIT_STR_LEN, GFP_KERNEL);
if (!limit_string)
return -ENOMEM;
- memset(limit_string, 0, ACPI_THERMAL_MAX_LIMIT_STR_LEN);
-
- active = kmalloc(ACPI_THERMAL_MAX_ACTIVE * sizeof(int), GFP_KERNEL);
+ active = kzalloc(ACPI_THERMAL_MAX_ACTIVE * sizeof(int), GFP_KERNEL);
if (!active) {
kfree(limit_string);
return -ENOMEM;
@@ -923,9 +921,6 @@ acpi_thermal_write_trip_points(struct fi
count = -EFAULT;
goto end;
}
-
- limit_string[count] = '\0';
-
num = sscanf(limit_string, "%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%d:%d",
&critical, &hot, &passive,
&active[0], &active[1], &active[2], &active[3], &active[4],
@@ -1271,11 +1266,9 @@ static int acpi_thermal_add(struct acpi_
if (!device)
return -EINVAL;
- tz = kmalloc(sizeof(struct acpi_thermal), GFP_KERNEL);
+ tz = kzalloc(sizeof(struct acpi_thermal), GFP_KERNEL);
if (!tz)
return -ENOMEM;
- memset(tz, 0, sizeof(struct acpi_thermal));
-
tz->device = device;
strcpy(tz->name, device->pnp.bus_id);
strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
index f48227f..1778340 100644
--- a/drivers/acpi/utils.c
+++ b/drivers/acpi/utils.c
@@ -262,11 +262,9 @@ acpi_evaluate_integer(acpi_handle handle
if (!data)
return AE_BAD_PARAMETER;
- element = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
+ element = kzalloc(sizeof(union acpi_object), GFP_KERNEL);
if (!element)
return AE_NO_MEMORY;
-
- memset(element, 0, sizeof(union acpi_object));
buffer.length = sizeof(union acpi_object);
buffer.pointer = element;
status = acpi_evaluate_object(handle, pathname, arguments, &buffer);
-
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