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mmc: core: document mmc_hw_reset()

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Add documentation for mmc_hw_reset to make sure the intended use case is
clear.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20200918215446.65654-1-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2020-09-18 23:54:46 +02:00 committed by Ulf Hansson
parent 0caf60c4b1
commit 3439c588c2
1 changed files with 10 additions and 0 deletions
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10
drivers/mmc/core/core.c
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@ -2063,6 +2063,16 @@ static void mmc_hw_reset_for_init(struct mmc_host *host)
host->ops->hw_reset(host);
}
/**
* mmc_hw_reset - reset the card in hardware
* @host: MMC host to which the card is attached
*
* Hard reset the card. This function is only for upper layers, like the
* block layer or card drivers. You cannot use it in host drivers (struct
* mmc_card might be gone then).
*
* Return: 0 on success, -errno on failure
*/
int mmc_hw_reset(struct mmc_host *host)
{
int ret;