diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2023-02-04 00:53:35 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2023-02-13 23:55:43 +0100 |
| commit | 80df83c2c57e75cb482ccf0c639ce84703ab41a2 (patch) | |
| tree | eeb6fdba1bd0b6bd60ddf79e9659fb6bba24a2a6 | |
| parent | 56f34e8ddc40d8eca29fb16ada409ac74c180b1f (diff) | |
mmc: core: add devm_mmc_alloc_host
Add a device-managed version of mmc_alloc_host().
The argument order is reversed compared to mmc_alloc_host() because
device-managed functions typically have the device argument first.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/6d8f9fdc-7c9e-8e4f-e6ef-5470b971c74e@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
| -rw-r--r-- | drivers/mmc/core/host.c | 26 | ||||
| -rw-r--r-- | include/linux/mmc/host.h | 1 |
2 files changed, 27 insertions, 0 deletions
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index d17eda753b7e..6a7475ad7685 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -588,6 +588,32 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) EXPORT_SYMBOL(mmc_alloc_host); +static void devm_mmc_host_release(struct device *dev, void *res) +{ + mmc_free_host(*(struct mmc_host **)res); +} + +struct mmc_host *devm_mmc_alloc_host(struct device *dev, int extra) +{ + struct mmc_host **dr, *host; + + dr = devres_alloc(devm_mmc_host_release, sizeof(*dr), GFP_KERNEL); + if (!dr) + return ERR_PTR(-ENOMEM); + + host = mmc_alloc_host(extra, dev); + if (IS_ERR(host)) { + devres_free(dr); + return host; + } + + *dr = host; + devres_add(dev, dr); + + return host; +} +EXPORT_SYMBOL(devm_mmc_alloc_host); + static int mmc_validate_host_caps(struct mmc_host *host) { struct device *dev = host->parent; diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 8fdd3cf971a3..812e6b583b25 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -527,6 +527,7 @@ struct mmc_host { struct device_node; struct mmc_host *mmc_alloc_host(int extra, struct device *); +struct mmc_host *devm_mmc_alloc_host(struct device *dev, int extra); int mmc_add_host(struct mmc_host *); void mmc_remove_host(struct mmc_host *); void mmc_free_host(struct mmc_host *); |