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authorWolfram Sang <wsa+renesas@sang-engineering.com>2020-09-18 23:54:46 +0200
committerUlf Hansson <ulf.hansson@linaro.org>2020-09-25 13:24:02 +0200
commit3439c588c23c7058b184240b11ffe7edd7b8ac7c (patch)
tree52dfcb50ebb827bb8019d705f7cda24fb851ff15 /drivers/mmc
parent0caf60c4b110b5aea9a0700be277421c1f575041 (diff)
mmc: core: document mmc_hw_reset()
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>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/core/core.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 8ccae6452b9c..d42037f0f10d 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -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;