This patch initializes variables by the time they are declared.
Signed-off-by: Andrey Shvetsov <andrey.shvet...@k2l.de>
Signed-off-by: Christian Gromm <christian.gr...@microchip.com>
---
drivers/staging/most/hdm-usb/hdm_usb.c | 72 +++++++++++-----------------------
1 file changed, 23 insertions(+), 49 deletions(-)
diff --git a/drivers/staging/most/hdm-usb/hdm_usb.c
b/drivers/staging/most/hdm-usb/hdm_usb.c
index ffe1519..453b641 100644
--- a/drivers/staging/most/hdm-usb/hdm_usb.c
+++ b/drivers/staging/most/hdm-usb/hdm_usb.c
@@ -278,11 +278,10 @@ static unsigned int get_stream_frame_size(struct
most_channel_config *cfg)
*/
static int hdm_poison_channel(struct most_interface *iface, int channel)
{
- struct most_dev *mdev;
+ struct most_dev *mdev = to_mdev(iface);
unsigned long flags;
spinlock_t *lock; /* temp. lock */
- mdev = to_mdev(iface);
if (unlikely(!iface)) {
dev_warn(&mdev->usb_device->dev, "Poison: Bad interface.\n");
return -EIO;
@@ -391,20 +390,13 @@ static int hdm_remove_padding(struct most_dev *mdev, int
channel,
*/
static void hdm_write_completion(struct urb *urb)
{
- struct mbo *mbo;
- struct buf_anchor *anchor;
- struct most_dev *mdev;
- struct device *dev;
- unsigned int channel;
+ struct mbo *mbo = urb->context;
+ struct buf_anchor *anchor = mbo->priv;
+ struct most_dev *mdev = to_mdev(mbo->ifp);
+ unsigned int channel = mbo->hdm_channel_id;
+ struct device *dev = &mdev->usb_device->dev;
+ spinlock_t *lock = mdev->anchor_list_lock + channel; /* temp. lock */
unsigned long flags;
- spinlock_t *lock; /* temp. lock */
-
- mbo = urb->context;
- anchor = mbo->priv;
- mdev = to_mdev(mbo->ifp);
- channel = mbo->hdm_channel_id;
- dev = &mdev->usb_device->dev;
- lock = mdev->anchor_list_lock + channel;
spin_lock_irqsave(lock, flags);
if (urb->status == -ENOENT || urb->status == -ECONNRESET ||
@@ -556,20 +548,13 @@ static void hdm_write_completion(struct urb *urb)
*/
static void hdm_read_completion(struct urb *urb)
{
- struct mbo *mbo;
- struct buf_anchor *anchor;
- struct most_dev *mdev;
- struct device *dev;
+ struct mbo *mbo = urb->context;
+ struct buf_anchor *anchor = mbo->priv;
+ struct most_dev *mdev = to_mdev(mbo->ifp);
+ unsigned int channel = mbo->hdm_channel_id;
+ struct device *dev = &mdev->usb_device->dev;
+ spinlock_t *lock = mdev->anchor_list_lock + channel; /* temp. lock */
unsigned long flags;
- unsigned int channel;
- spinlock_t *lock; /* temp. lock */
-
- mbo = urb->context;
- anchor = mbo->priv;
- mdev = to_mdev(mbo->ifp);
- channel = mbo->hdm_channel_id;
- dev = &mdev->usb_device->dev;
- lock = mdev->anchor_list_lock + channel;
spin_lock_irqsave(lock, flags);
if (urb->status == -ENOENT || urb->status == -ECONNRESET ||
@@ -738,15 +723,13 @@ static int hdm_configure_channel(struct most_interface
*iface, int channel,
unsigned int frame_size;
unsigned int temp_size;
unsigned int tail_space;
- struct most_dev *mdev;
- struct device *dev;
+ struct most_dev *mdev = to_mdev(iface);
+ struct device *dev = &mdev->usb_device->dev;
- mdev = to_mdev(iface);
mdev->is_channel_healthy[channel] = true;
mdev->clear_work[channel].channel = channel;
mdev->clear_work[channel].mdev = mdev;
INIT_WORK(&mdev->clear_work[channel].ws, wq_clear_halt);
- dev = &mdev->usb_device->dev;
if (unlikely(!iface || !conf)) {
dev_err(dev, "Bad interface or config pointer.\n");
@@ -896,13 +879,10 @@ static void link_stat_timer_handler(unsigned long data)
*/
static void wq_netinfo(struct work_struct *wq_obj)
{
- struct most_dev *mdev;
- int i, prev_link_stat;
+ struct most_dev *mdev = to_mdev_from_work(wq_obj);
+ int i, prev_link_stat = mdev->link_stat;
u8 prev_hw_addr[6];
- mdev = to_mdev_from_work(wq_obj);
- prev_link_stat = mdev->link_stat;
-
for (i = 0; i < 6; i++)
prev_hw_addr[i] = mdev->hw_addr[i];
@@ -1174,10 +1154,9 @@ static struct kobj_type most_dci_ktype = {
static struct
most_dci_obj *create_most_dci_obj(struct kobject *parent)
{
- struct most_dci_obj *most_dci;
+ struct most_dci_obj *most_dci = kzalloc(sizeof(*most_dci), GFP_KERNEL);
int retval;
- most_dci = kzalloc(sizeof(*most_dci), GFP_KERNEL);
if (!most_dci)
return NULL;
@@ -1214,21 +1193,17 @@ static void destroy_most_dci_obj(struct most_dci_obj *p)
static int
hdm_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
+ struct usb_host_interface *usb_iface_desc = interface->cur_altsetting;
+ struct usb_device *usb_dev = interface_to_usbdev(interface);
+ struct device *dev = &usb_dev->dev;
+ struct most_dev *mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
unsigned int i;
unsigned int num_endpoints;
struct most_channel_capability *tmp_cap;
- struct most_dev *mdev;
- struct usb_device *usb_dev;
- struct device *dev;
- struct usb_host_interface *usb_iface_desc;
struct usb_endpoint_descriptor *ep_desc;
int ret = 0;
int err;
- usb_iface_desc = interface->cur_altsetting;
- usb_dev = interface_to_usbdev(interface);
- dev = &usb_dev->dev;
- mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
if (!mdev)
goto exit_ENOMEM;
@@ -1378,9 +1353,8 @@ exit_ENOMEM:
*/
static void hdm_disconnect(struct usb_interface *interface)
{
- struct most_dev *mdev;
+ struct most_dev *mdev = usb_get_intfdata(interface);
- mdev = usb_get_intfdata(interface);
mutex_lock(&mdev->io_mutex);
usb_set_intfdata(interface, NULL);
mdev->usb_device = NULL;
--
1.9.1
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