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mmc: bcm2835: Drop pointer to mmc_host from bcm2835_host

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The BCM2835 MMC host driver uses a pointer to get from the private
bcm2835_host structure to the generic mmc_host structure.  However the
latter is always immediately preceding the former in memory, so compute
its address with a subtraction (which is cheaper than a dereference) and
drop the superfluous pointer.

No functional change intended.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Frank Pavlic <f.pavlic@kunbus.de>
Cc: Alexander Graf <agraf@suse.de>
Reviewed-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Lukas Wunner 2019-02-03 09:27:00 +01:00 • committed by Ulf Hansson
parent e5c1e63c93
commit c58ccf2b6d
2 changed files with 15 additions and 10 deletions
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5
include/linux/mmc/host.h
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@ -478,6 +478,11 @@ static inline void *mmc_priv(struct mmc_host *host)
return (void *)host->private;
}
static inline struct mmc_host *mmc_from_priv(void *priv)
{
return container_of(priv, struct mmc_host, private);
}
#define mmc_host_is_spi(host) ((host)->caps & MMC_CAP_SPI)
#define mmc_dev(x) ((x)->parent)