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-rw-r--r--drivers/base/firmware_class.c69
1 files changed, 41 insertions, 28 deletions
diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 4acb2c5..98f6c02 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -62,14 +62,16 @@ firmware_timeout_show(struct class *class, char *buf)
}
/**
- * firmware_timeout_store:
- * Description:
+ * firmware_timeout_store - set number of seconds to wait for firmware
+ * @class: device class pointer
+ * @buf: buffer to scan for timeout value
+ * @count: number of bytes in @buf
+ *
* Sets the number of seconds to wait for the firmware. Once
- * this expires an error will be return to the driver and no
+ * this expires an error will be returned to the driver and no
* firmware will be provided.
*
- * Note: zero means 'wait for ever'
- *
+ * Note: zero means 'wait forever'.
**/
static ssize_t
firmware_timeout_store(struct class *class, const char *buf, size_t count)
@@ -123,12 +125,15 @@ firmware_loading_show(struct class_device *class_dev, char *buf)
}
/**
- * firmware_loading_store: - loading control file
- * Description:
+ * firmware_loading_store - set value in the 'loading' control file
+ * @class_dev: class_device pointer
+ * @buf: buffer to scan for loading control value
+ * @count: number of bytes in @buf
+ *
* The relevant values are:
*
* 1: Start a load, discarding any previous partial load.
- * 0: Conclude the load and handle the data to the driver code.
+ * 0: Conclude the load and hand the data to the driver code.
* -1: Conclude the load with an error and discard any written data.
**/
static ssize_t
@@ -201,6 +206,7 @@ out:
up(&fw_lock);
return ret_count;
}
+
static int
fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
{
@@ -227,11 +233,13 @@ fw_realloc_buffer(struct firmware_priv *fw_priv, int min_size)
}
/**
- * firmware_data_write:
+ * firmware_data_write - write method for firmware
+ * @kobj: kobject for the class_device
+ * @buffer: buffer being written
+ * @offset: buffer offset for write in total data store area
+ * @count: buffer size
*
- * Description:
- *
- * Data written to the 'data' attribute will be later handled to
+ * Data written to the 'data' attribute will be later handed to
* the driver as a firmware image.
**/
static ssize_t
@@ -264,6 +272,7 @@ out:
up(&fw_lock);
return retval;
}
+
static struct bin_attribute firmware_attr_data_tmpl = {
.attr = {.name = "data", .mode = 0644, .owner = THIS_MODULE},
.size = 0,
@@ -448,13 +457,16 @@ out:
/**
* request_firmware: - request firmware to hotplug and wait for it
- * Description:
- * @firmware will be used to return a firmware image by the name
+ * @firmware_p: pointer to firmware image
+ * @name: name of firmware file
+ * @device: device for which firmware is being loaded
+ *
+ * @firmware_p will be used to return a firmware image by the name
* of @name for device @device.
*
* Should be called from user context where sleeping is allowed.
*
- * @name will be use as $FIRMWARE in the hotplug environment and
+ * @name will be used as $FIRMWARE in the hotplug environment and
* should be distinctive enough not to be confused with any other
* firmware image for this or any other device.
**/
@@ -468,6 +480,7 @@ request_firmware(const struct firmware **firmware_p, const char *name,
/**
* release_firmware: - release the resource associated with a firmware image
+ * @fw: firmware resource to release
**/
void
release_firmware(const struct firmware *fw)
@@ -480,8 +493,10 @@ release_firmware(const struct firmware *fw)
/**
* register_firmware: - provide a firmware image for later usage
+ * @name: name of firmware image file
+ * @data: buffer pointer for the firmware image
+ * @size: size of the data buffer area
*
- * Description:
* Make sure that @data will be available by requesting firmware @name.
*
* Note: This will not be possible until some kind of persistence
@@ -526,21 +541,19 @@ request_firmware_work_func(void *arg)
}
/**
- * request_firmware_nowait:
+ * request_firmware_nowait: asynchronous version of request_firmware
+ * @module: module requesting the firmware
+ * @hotplug: invokes hotplug event to copy the firmware image if this flag
+ * is non-zero else the firmware copy must be done manually.
+ * @name: name of firmware file
+ * @device: device for which firmware is being loaded
+ * @context: will be passed over to @cont, and
+ * @fw may be %NULL if firmware request fails.
+ * @cont: function will be called asynchronously when the firmware
+ * request is over.
*
- * Description:
* Asynchronous variant of request_firmware() for contexts where
* it is not possible to sleep.
- *
- * @hotplug invokes hotplug event to copy the firmware image if this flag
- * is non-zero else the firmware copy must be done manually.
- *
- * @cont will be called asynchronously when the firmware request is over.
- *
- * @context will be passed over to @cont.
- *
- * @fw may be %NULL if firmware request fails.
- *
**/
int
request_firmware_nowait(
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