As sparse correctly pointed out scsi_partsize should use get_unaligned_le32 to read PC partition tables from disk, as they are little endian.
The result of this bug is that we returned incorrect geometries on big endian systems when using the scsicam variant. Which probably doesn't matter as only old x86 systems every cared about the geometry. Signed-off-by: Christoph Hellwig <[email protected]> --- drivers/scsi/scsicam.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/scsicam.c b/drivers/scsi/scsicam.c index 92d24d6..910f4a7 100644 --- a/drivers/scsi/scsicam.c +++ b/drivers/scsi/scsicam.c @@ -163,8 +163,8 @@ int scsi_partsize(unsigned char *buf, unsigned long capacity, end_head * end_sector + end_sector; /* This is the actual _sector_ number at the end */ - logical_end = get_unaligned(&largest->start_sect) - + get_unaligned(&largest->nr_sects); + logical_end = get_unaligned_le32(&largest->start_sect) + + get_unaligned_le32(&largest->nr_sects); /* This is for >1023 cylinders */ ext_cyl = (logical_end - (end_head * end_sector + end_sector)) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
