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acpi-dma: align documentation with kernel-doc format 

It mostly fixes the "RETURN" sections in the resulting manual page.

There is no functional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Andy Shevchenko 2013-12-02 15:16:28 +02:00 committed by Vinod Koul
parent af58652a3e
commit 39d1447811
1 changed files with 24 additions and 12 deletions
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36
drivers/dma/acpi-dma.c
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@ -30,11 +30,12 @@ static DEFINE_MUTEX(acpi_dma_lock);
* @adev: ACPI device to match with
* @adma: struct acpi_dma of the given DMA controller
*
* Returns 1 on success, 0 when no information is available, or appropriate
* errno value on error.
*
* In order to match a device from DSDT table to the corresponding CSRT device
* we use MMIO address and IRQ.
*
* Return:
* 1 on success, 0 when no information is available, or appropriate errno value
* on error.
*/
static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp,
struct acpi_device *adev, struct acpi_dma *adma)
@ -101,7 +102,6 @@ static int acpi_dma_parse_resource_group(const struct acpi_csrt_group *grp,
*
* We are using this table to get the request line range of the specific DMA
* controller to be used later.
*
*/
static void acpi_dma_parse_csrt(struct acpi_device *adev, struct acpi_dma *adma)
{
@ -141,10 +141,11 @@ static void acpi_dma_parse_csrt(struct acpi_device *adev, struct acpi_dma *adma)
* @data pointer to controller specific data to be used by
* translation function
*
* Returns 0 on success or appropriate errno value on error.
*
* Allocated memory should be freed with appropriate acpi_dma_controller_free()
* call.
*
* Return:
* 0 on success or appropriate errno value on error.
*/
int acpi_dma_controller_register(struct device *dev,
struct dma_chan *(*acpi_dma_xlate)
@ -188,6 +189,9 @@ EXPORT_SYMBOL_GPL(acpi_dma_controller_register);
* @dev: struct device of DMA controller
*
* Memory allocated by acpi_dma_controller_register() is freed here.
*
* Return:
* 0 on success or appropriate errno value on error.
*/
int acpi_dma_controller_free(struct device *dev)
{
@ -225,6 +229,9 @@ static void devm_acpi_dma_release(struct device *dev, void *res)
* Managed acpi_dma_controller_register(). DMA controller registered by this
* function are automatically freed on driver detach. See
* acpi_dma_controller_register() for more information.
*
* Return:
* 0 on success or appropriate errno value on error.
*/
int devm_acpi_dma_controller_register(struct device *dev,
struct dma_chan *(*acpi_dma_xlate)
@ -267,8 +274,6 @@ EXPORT_SYMBOL_GPL(devm_acpi_dma_controller_free);
* @adma: struct acpi_dma of DMA controller
* @dma_spec: dma specifier to update
*
* Returns 0, if no information is avaiable, -1 on mismatch, and 1 otherwise.
*
* Accordingly to ACPI 5.0 Specification Table 6-170 "Fixed DMA Resource
* Descriptor":
* DMA Request Line bits is a platform-relative number uniquely
@ -276,6 +281,9 @@ EXPORT_SYMBOL_GPL(devm_acpi_dma_controller_free);
* mapping is done in a controller-specific OS driver.
* That's why we can safely adjust slave_id when the appropriate controller is
* found.
*
* Return:
* 0, if no information is avaiable, -1 on mismatch, and 1 otherwise.
*/
static int acpi_dma_update_dma_spec(struct acpi_dma *adma,
struct acpi_dma_spec *dma_spec)
@ -334,7 +342,8 @@ static int acpi_dma_parse_fixed_dma(struct acpi_resource *res, void *data)
* @dev: struct device to get DMA request from
* @index: index of FixedDMA descriptor for @dev
*
* Returns pointer to appropriate dma channel on success or NULL on error.
* Return:
* Pointer to appropriate dma channel on success or NULL on error.
*/
struct dma_chan *acpi_dma_request_slave_chan_by_index(struct device *dev,
size_t index)
@ -403,7 +412,8 @@ EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_index);
* translate the names "tx" and "rx" here based on the most common case where
* the first FixedDMA descriptor is TX and second is RX.
*
* Returns pointer to appropriate dma channel on success or NULL on error.
* Return:
* Pointer to appropriate dma channel on success or NULL on error.
*/
struct dma_chan *acpi_dma_request_slave_chan_by_name(struct device *dev,
const char *name)
@ -427,8 +437,10 @@ EXPORT_SYMBOL_GPL(acpi_dma_request_slave_chan_by_name);
* @adma: pointer to ACPI DMA controller data
*
* A simple translation function for ACPI based devices. Passes &struct
* dma_spec to the DMA controller driver provided filter function. Returns
* pointer to the channel if found or %NULL otherwise.
* dma_spec to the DMA controller driver provided filter function.
*
* Return:
* Pointer to the channel if found or %NULL otherwise.
*/
struct dma_chan *acpi_dma_simple_xlate(struct acpi_dma_spec *dma_spec,
struct acpi_dma *adma)