diff options
| author | Philip Pokorny <ppokorny@penguincomputing.com> | 2005-05-28 01:24:47 -0700 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-06-27 00:47:48 -0400 |
| commit | 0c144d0d0303917000cc918e63567b5ded22d5e2 (patch) | |
| tree | 813d7254197f65bd626112ef44416c8002d3aa73 /drivers/scsi/libata-scsi.c | |
| parent | 020f46a39eb7b99a575b9f4d105fce2b142acdf1 (diff) | |
[PATCH] libata fix read capacity handling for more than 2TB
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Diffstat (limited to 'drivers/scsi/libata-scsi.c')
| -rw-r--r-- | drivers/scsi/libata-scsi.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index 7a4adc4c8f0..794fb559efb 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -1176,8 +1176,12 @@ unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, n_sectors = ata_id_u32(args->id, 60); n_sectors--; /* ATA TotalUserSectors - 1 */ - tmp = n_sectors; /* note: truncates, if lba48 */ if (args->cmd->cmnd[0] == READ_CAPACITY) { + if( n_sectors >= 0xffffffffULL ) + tmp = 0xffffffff ; /* Return max count on overflow */ + else + tmp = n_sectors ; + /* sector count, 32-bit */ rbuf[0] = tmp >> (8 * 3); rbuf[1] = tmp >> (8 * 2); @@ -1191,10 +1195,12 @@ unsigned int ata_scsiop_read_cap(struct ata_scsi_args *args, u8 *rbuf, } else { /* sector count, 64-bit */ - rbuf[2] = n_sectors >> (8 * 7); - rbuf[3] = n_sectors >> (8 * 6); - rbuf[4] = n_sectors >> (8 * 5); - rbuf[5] = n_sectors >> (8 * 4); + tmp = n_sectors >> (8 * 4); + rbuf[2] = tmp >> (8 * 3); + rbuf[3] = tmp >> (8 * 2); + rbuf[4] = tmp >> (8 * 1); + rbuf[5] = tmp; + tmp = n_sectors; rbuf[6] = tmp >> (8 * 3); rbuf[7] = tmp >> (8 * 2); rbuf[8] = tmp >> (8 * 1); |