提交 67a61c48 编写于 作者: P Pierre Ossman

mmc: update kerneldoc

Make sure the kerneldoc comments are up to date and relevant.
Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
上级 70f10482
......@@ -140,7 +140,16 @@ static void mmc_wait_done(struct mmc_request *mrq)
complete(mrq->done_data);
}
int mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
/**
* mmc_wait_for_req - start a request and wait for completion
* @host: MMC host to start command
* @mrq: MMC request to start
*
* Start a new MMC custom command request for a host, and wait
* for the command to complete. Does not attempt to parse the
* response.
*/
void mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
{
DECLARE_COMPLETION_ONSTACK(complete);
......@@ -150,8 +159,6 @@ int mmc_wait_for_req(struct mmc_host *host, struct mmc_request *mrq)
mmc_start_request(host, mrq);
wait_for_completion(&complete);
return 0;
}
EXPORT_SYMBOL(mmc_wait_for_req);
......@@ -192,6 +199,9 @@ EXPORT_SYMBOL(mmc_wait_for_cmd);
* @data: data phase for command
* @card: the MMC card associated with the data transfer
* @write: flag to differentiate reads from writes
*
* Computes the data timeout parameters according to the
* correct algorithm given the card type.
*/
void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card,
int write)
......@@ -240,15 +250,10 @@ void mmc_set_data_timeout(struct mmc_data *data, const struct mmc_card *card,
EXPORT_SYMBOL(mmc_set_data_timeout);
/**
* __mmc_claim_host - exclusively claim a host
* mmc_claim_host - exclusively claim a host
* @host: mmc host to claim
* @card: mmc card to claim host for
*
* Claim a host for a set of operations. If a valid card
* is passed and this wasn't the last card selected, select
* the card before returning.
*
* Note: you should use mmc_card_claim_host or mmc_claim_host.
* Claim a host for a set of operations.
*/
void mmc_claim_host(struct mmc_host *host)
{
......@@ -498,8 +503,10 @@ void __mmc_release_bus(struct mmc_host *host)
* @host: host which changed state.
* @delay: optional delay to wait before detection (jiffies)
*
* All we know is that card(s) have been inserted or removed
* from the socket(s). We don't know which socket or cards.
* MMC drivers should call this when they detect a card has been
* inserted or removed. The MMC layer will confirm that any
* present card is still functional, and initialize any newly
* inserted.
*/
void mmc_detect_change(struct mmc_host *host, unsigned long delay)
{
......
......@@ -93,6 +93,10 @@ EXPORT_SYMBOL(mmc_alloc_host);
/**
* mmc_add_host - initialise host hardware
* @host: mmc host
*
* Register the host with the driver model. The host must be
* prepared to start servicing requests before this function
* completes.
*/
int mmc_add_host(struct mmc_host *host)
{
......@@ -126,7 +130,8 @@ EXPORT_SYMBOL(mmc_add_host);
* @host: mmc host
*
* Unregister and remove all cards associated with this host,
* and power down the MMC bus.
* and power down the MMC bus. No new requests will be issued
* after this function has returned.
*/
void mmc_remove_host(struct mmc_host *host)
{
......
......@@ -25,7 +25,7 @@
* mmc_wait_for_app_cmd - start an application command and wait for
completion
* @host: MMC host to start command
* @rca: RCA to send MMC_APP_CMD to
* @card: Card to send MMC_APP_CMD to
* @cmd: MMC command to start
* @retries: maximum number of retries
*
......
......@@ -99,7 +99,7 @@ struct mmc_request {
struct mmc_host;
struct mmc_card;
extern int mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
extern void mmc_wait_for_req(struct mmc_host *, struct mmc_request *);
extern int mmc_wait_for_cmd(struct mmc_host *, struct mmc_command *, int);
extern int mmc_wait_for_app_cmd(struct mmc_host *, struct mmc_card *,
struct mmc_command *, int);
......
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