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mmc: block: support no access to boot partitions

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Intel Medfield platform blocks access to eMMC boot partitions which
results in switch errors.  Since there is no access, mmcboot0/1
devices should not be created.  Add a host capability to reflect that.

Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Chris Ball <[email protected]>
This commit is contained in:
Adrian Hunter 2011-09-23 12:48:21 +03:00 • committed by Chris Ball
commit f7c56ef2af
3 changed files with 13 additions and 1 deletions
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2
drivers/mmc/card/block.c
View file

@ -1480,7 +1480,7 @@ static int mmc_blk_alloc_parts(struct mmc_card *card, struct mmc_blk_data *md)
if (!mmc_card_mmc(card))
return 0;
if (card->ext_csd.boot_size) {
if (card->ext_csd.boot_size && mmc_boot_partition_access(card->host)) {
ret = mmc_blk_alloc_part(card, md, EXT_CSD_PART_CONFIG_ACC_BOOT0,
card->ext_csd.boot_size >> 9,
true,

2
drivers/mmc/host/sdhci-pci.c
View file

@ -215,6 +215,8 @@ static int mfd_emmc_probe_slot(struct sdhci_pci_slot *slot)
slot->host->mmc->caps |= MMC_CAP_8_BIT_DATA;
slot->host->mmc->caps2 = MMC_CAP2_BOOTPART_NOACC;
return 0;
}