diff options
| author | Egbert Eich <eich@suse.com> | 2013-04-09 21:11:56 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2013-05-01 16:24:02 -0400 |
| commit | 0472fbfd3250d1a33d3de78afdcbf24f78ac026b (patch) | |
| tree | 1d5f822e2d95f800121368bba96a185ae6f7b0fb /drivers | |
| parent | bc8d98713f10582f4e35b9208f1b967c6a9f9953 (diff) | |
part/dev_desc: Add log2 of blocksize to block_dev_desc data struct
log2 of the device block size serves as the shift value used to calculate
the block number to read in file systems when implementing avaiable block
sizes.
It is needed quite often in file systems thus it is pre-calculated and
stored in the block device descriptor.
Signed-off-by: Egbert Eich <eich@suse.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/block/ata_piix.c | 1 | ||||
| -rw-r--r-- | drivers/block/pata_bfin.c | 2 | ||||
| -rw-r--r-- | drivers/block/systemace.c | 1 | ||||
| -rw-r--r-- | drivers/mmc/mmc.c | 1 |
4 files changed, 5 insertions, 0 deletions
diff --git a/drivers/block/ata_piix.c b/drivers/block/ata_piix.c index 1e33a66c45..fcae448508 100644 --- a/drivers/block/ata_piix.c +++ b/drivers/block/ata_piix.c @@ -406,6 +406,7 @@ void sata_identify(int num, int dev) /* assuming HD */ sata_dev_desc[devno].type = DEV_TYPE_HARDDISK; sata_dev_desc[devno].blksz = ATA_BLOCKSIZE; + sata_dev_desc[devno].log2blksz = LOG2(sata_dev_desc[devno].blksz); sata_dev_desc[devno].lun = 0; /* just to fill something in... */ } diff --git a/drivers/block/pata_bfin.c b/drivers/block/pata_bfin.c index b847dd91e7..27ecaf4f9e 100644 --- a/drivers/block/pata_bfin.c +++ b/drivers/block/pata_bfin.c @@ -897,6 +897,8 @@ static void bfin_ata_identify(struct ata_port *ap, int dev) /* assuming HD */ sata_dev_desc[ap->port_no].type = DEV_TYPE_HARDDISK; sata_dev_desc[ap->port_no].blksz = ATA_SECT_SIZE; + sata_dev_desc[ap->port_no].log2blksz = + LOG2(sata_dev_desc[ap->port_no].blksz); sata_dev_desc[ap->port_no].lun = 0; /* just to fill something in... */ printf("PATA device#%d %s is found on ata port#%d.\n", diff --git a/drivers/block/systemace.c b/drivers/block/systemace.c index bf29cbbb7a..b08715f7c4 100644 --- a/drivers/block/systemace.c +++ b/drivers/block/systemace.c @@ -127,6 +127,7 @@ block_dev_desc_t *systemace_get_dev(int dev) systemace_dev.part_type = PART_TYPE_UNKNOWN; systemace_dev.type = DEV_TYPE_HARDDISK; systemace_dev.blksz = 512; + systemace_dev.log2blksz = LOG2(systemace_dev.blksz); systemace_dev.removable = 1; systemace_dev.block_read = systemace_read; diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index 23aeec1923..2590f1bcce 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -1203,6 +1203,7 @@ static int mmc_startup(struct mmc *mmc) mmc->block_dev.lun = 0; mmc->block_dev.type = 0; mmc->block_dev.blksz = mmc->read_bl_len; + mmc->block_dev.log2blksz = LOG2(mmc->block_dev.blksz); mmc->block_dev.lba = lldiv(mmc->capacity, mmc->read_bl_len); sprintf(mmc->block_dev.vendor, "Man %06x Snr %04x%04x", mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff), |