Having a mutex named "lock" is a bit misleading.
Signed-off-by: David Härdeman <[email protected]>
---
drivers/media/rc/img-ir/img-ir-hw.c | 4 ++-
drivers/media/rc/rc-main.c | 42 ++++++++++++++++++-----------------
include/media/rc-core.h | 5 ++--
3 files changed, 25 insertions(+), 26 deletions(-)
diff --git a/drivers/media/rc/img-ir/img-ir-hw.c
b/drivers/media/rc/img-ir/img-ir-hw.c
index 5bc7903..a9abbb4 100644
--- a/drivers/media/rc/img-ir/img-ir-hw.c
+++ b/drivers/media/rc/img-ir/img-ir-hw.c
@@ -666,11 +666,11 @@ static void img_ir_set_protocol(struct img_ir_priv *priv,
u64 proto)
{
struct rc_dev *rdev = priv->hw.rdev;
- mutex_lock(&rdev->lock);
+ mutex_lock(&rdev->mutex);
rdev->enabled_protocols = proto;
rdev->allowed_wakeup_protocols = proto;
rdev->enabled_wakeup_protocols = proto;
- mutex_unlock(&rdev->lock);
+ mutex_unlock(&rdev->mutex);
}
/* Set up IR decoders */
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 7caca4f..bd4dfab 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -109,7 +109,7 @@ int rc_open(struct rc_dev *dev)
{
int err = 0;
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
if (dev->dead)
err = -ENODEV;
@@ -119,7 +119,7 @@ int rc_open(struct rc_dev *dev)
dev->users--;
}
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
return err;
}
@@ -127,12 +127,12 @@ EXPORT_SYMBOL_GPL(rc_open);
void rc_close(struct rc_dev *dev)
{
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
if (!dev->dead && !--dev->users && dev->close)
dev->close(dev);
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
}
EXPORT_SYMBOL_GPL(rc_close);
@@ -322,7 +322,7 @@ struct rc_filter_attribute {
* It returns the protocol names of supported protocols.
* Enabled protocols are printed in brackets.
*
- * dev->lock is taken to guard against races between store_protocols and
+ * dev->mutex is taken to guard against races between store_protocols and
* show_protocols.
*/
static ssize_t show_protocols(struct device *device,
@@ -339,7 +339,7 @@ static ssize_t show_protocols(struct device *device,
return -EINVAL;
rc_event(dev, RC_KEY, RC_KEY_REPEAT, 1);
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
if (fattr->type == RC_FILTER_NORMAL) {
enabled = dev->enabled_protocols;
@@ -349,7 +349,7 @@ static ssize_t show_protocols(struct device *device,
allowed = dev->allowed_wakeup_protocols;
}
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
IR_dprintk(1, "%s: allowed - 0x%llx, enabled - 0x%llx\n",
__func__, (long long)allowed, (long long)enabled);
@@ -449,7 +449,7 @@ static int parse_protocol_change(u64 *protocols, const char
*buf)
* See parse_protocol_change() for the valid commands.
* Returns @len on success or a negative error code.
*
- * dev->lock is taken to guard against races between store_protocols and
+ * dev->mutex is taken to guard against races between store_protocols and
* show_protocols.
*/
static ssize_t store_protocols(struct device *device,
@@ -488,7 +488,7 @@ static ssize_t store_protocols(struct device *device,
return -EINVAL;
}
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
old_protocols = *current_protocols;
new_protocols = old_protocols;
@@ -532,7 +532,7 @@ static ssize_t store_protocols(struct device *device,
rc = len;
out:
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
return rc;
}
@@ -550,7 +550,7 @@ out:
* Bits of the filter value corresponding to set bits in the filter mask are
* compared against input scancodes and non-matching scancodes are discarded.
*
- * dev->lock is taken to guard against races between store_filter and
+ * dev->mutex is taken to guard against races between store_filter and
* show_filter.
*/
static ssize_t show_filter(struct device *device,
@@ -571,12 +571,12 @@ static ssize_t show_filter(struct device *device,
else
filter = &dev->scancode_wakeup_filter;
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
if (fattr->mask)
val = filter->mask;
else
val = filter->data;
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
return sprintf(buf, "%#x\n", val);
}
@@ -597,7 +597,7 @@ static ssize_t show_filter(struct device *device,
* Bits of the filter value corresponding to set bits in the filter mask are
* compared against input scancodes and non-matching scancodes are discarded.
*
- * dev->lock is taken to guard against races between store_filter and
+ * dev->mutex is taken to guard against races between store_filter and
* show_filter.
*/
static ssize_t store_filter(struct device *device,
@@ -633,7 +633,7 @@ static ssize_t store_filter(struct device *device,
if (!set_filter)
return -EINVAL;
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
new_filter = *filter;
if (fattr->mask)
@@ -654,7 +654,7 @@ static ssize_t store_filter(struct device *device,
*filter = new_filter;
unlock:
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
return (ret < 0) ? ret : len;
}
@@ -1087,7 +1087,7 @@ static long rc_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
struct rc_dev *dev = client->dev;
int ret;
- ret = mutex_lock_interruptible(&dev->lock);
+ ret = mutex_lock_interruptible(&dev->mutex);
if (ret)
return ret;
@@ -1099,7 +1099,7 @@ static long rc_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
ret = rc_do_ioctl(dev, cmd, arg);
out:
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
return ret;
}
@@ -1226,7 +1226,7 @@ struct rc_dev *rc_allocate_device(void)
mutex_init(&dev->txmutex);
init_waitqueue_head(&dev->txwait);
init_waitqueue_head(&dev->rxwait);
- mutex_init(&dev->lock);
+ mutex_init(&dev->mutex);
dev->dev.type = &rc_dev_type;
dev->dev.class = &rc_class;
@@ -1339,9 +1339,9 @@ void rc_unregister_device(struct rc_dev *dev)
if (!dev)
return;
- mutex_lock(&dev->lock);
+ mutex_lock(&dev->mutex);
dev->dead = true;
- mutex_unlock(&dev->lock);
+ mutex_unlock(&dev->mutex);
spin_lock(&dev->client_lock);
list_for_each_entry(client, &dev->client_list, node)
diff --git a/include/media/rc-core.h b/include/media/rc-core.h
index 25c1d38..a310e5b 100644
--- a/include/media/rc-core.h
+++ b/include/media/rc-core.h
@@ -268,8 +268,7 @@ enum rc_filter_type {
* @driver_name: name of the hardware driver which registered this device
* @map_name: name of the default keymap
* @rc_kt: current rc_keytable
- * @lock: used to ensure we've filled in all protocol details before
- * anyone can call show_protocols or store_protocols
+ * @mutex: used where a more specific lock/mutex/etc is not available
* @dead: used to determine if the device is still alive
* @client_list: list of clients (processes which have opened the rc chardev)
* @client_lock: protects client_list
@@ -334,7 +333,7 @@ struct rc_dev {
const char *map_name;
struct rc_keytable *keytables[RC_MAX_KEYTABLES];
struct list_head keytable_list;
- struct mutex lock;
+ struct mutex mutex;
bool dead;
struct list_head client_list;
spinlock_t client_lock;
--
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