Commit 80df83c2 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Ulf Hansson

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: default avatarHeiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/6d8f9fdc-7c9e-8e4f-e6ef-5470b971c74e@gmail.comSigned-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 56f34e8d
...@@ -588,6 +588,32 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev) ...@@ -588,6 +588,32 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
EXPORT_SYMBOL(mmc_alloc_host); 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) static int mmc_validate_host_caps(struct mmc_host *host)
{ {
struct device *dev = host->parent; struct device *dev = host->parent;
......
...@@ -527,6 +527,7 @@ struct mmc_host { ...@@ -527,6 +527,7 @@ struct mmc_host {
struct device_node; struct device_node;
struct mmc_host *mmc_alloc_host(int extra, struct device *); 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 *); int mmc_add_host(struct mmc_host *);
void mmc_remove_host(struct mmc_host *); void mmc_remove_host(struct mmc_host *);
void mmc_free_host(struct mmc_host *); void mmc_free_host(struct mmc_host *);
......
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