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mmc:fix Call mmc_init() when executing mmc_get_dev()

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This code adds call to mmc_init(), for partition related commands (e.g.
fatls, fatinfo etc.).

It is safe to call mmc_init() multiple times since mmc->has_init flag
prevents from multiple initialization.

The FAT related code calls get_dev high level method and then uses
elements from mmc->block_dev, which is uninitialized until the mmc_init
(and thereof mmc_startup) is called.

This problem appears on boards, which don't use mmc as the default
place for envs

Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: Andy Fleming <afleming@gmail.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
This commit is contained in:
Łukasz Majewski 2012-04-19 02:39:18 +00:00 • committed by Andy Fleming
parent ad5fd92289
commit 40242bc394
1 changed files with 4 additions and 1 deletions
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5
drivers/mmc/mmc.c
View file

@ -1306,8 +1306,11 @@ int mmc_register(struct mmc *mmc)
block_dev_desc_t *mmc_get_dev(int dev)
{
struct mmc *mmc = find_mmc_device(dev);
if (!mmc)
return NULL;
return mmc ? &mmc->block_dev : NULL;
mmc_init(mmc);
return &mmc->block_dev;
}
#endif