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mmc: core: Fetch and decode EXT_CSD from mmc_read_ext_csd() 

As a step in cleaning up code around reading/decoding EXT_CSD, convert
the current mmc_read_ext_csd(), to handle both fetching the EXT_CSD
and decoding its data.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Ulf Hansson 2014-10-20 13:37:24 +02:00
parent 148bcab28f
commit 076ec38a58
1 changed files with 17 additions and 13 deletions
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30
drivers/mmc/core/mmc.c
View File

@ -388,7 +388,7 @@ static void mmc_manage_gp_partitions(struct mmc_card *card, u8 *ext_csd)
/*
* Decode extended CSD.
*/
static int mmc_read_ext_csd(struct mmc_card *card, u8 *ext_csd)
static int mmc_decode_ext_csd(struct mmc_card *card, u8 *ext_csd)
{
int err = 0, idx;
unsigned int part_size;
@ -637,6 +637,20 @@ out:
return err;
}
static int mmc_read_ext_csd(struct mmc_card *card)
{
u8 *ext_csd = NULL;
int err;
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
return err;
err = mmc_decode_ext_csd(card, ext_csd);
kfree(ext_csd);
return err;
}
static int mmc_compare_ext_csds(struct mmc_card *card, unsigned bus_width)
{
u8 *bw_ext_csd;
@ -1259,7 +1273,6 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
int err;
u32 cid[4];
u32 rocr;
u8 *ext_csd = NULL;
BUG_ON(!host);
WARN_ON(!host->claimed);
@ -1368,14 +1381,8 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
}
if (!oldcard) {
/*
* Fetch and process extended CSD.
*/
err = mmc_get_ext_csd(card, &ext_csd);
if (err)
goto free_card;
err = mmc_read_ext_csd(card, ext_csd);
/* Read extended CSD. */
err = mmc_read_ext_csd(card);
if (err)
goto free_card;
@ -1552,15 +1559,12 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
if (!oldcard)
host->card = card;
kfree(ext_csd);
return 0;
free_card:
if (!oldcard)
mmc_remove_card(card);
err:
kfree(ext_csd);
return err;
}