libata: Clarify ata_set_lba_range_entries function

ata_set_lba_range_entries used the variable max for two different things
which was confusing.  Make the function take a buffer size in bytes as
argument and return the used buffer size upon completion.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index e1e186b9dfcc..62e6b9ea96af 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -2972,7 +2972,7 @@ static unsigned int ata_scsi_write_same_xlat(struct ata_queued_cmd *qc)
                 goto invalid_fld;
 
         buf = page_address(sg_page(scsi_sglist(scmd)));
-        size = ata_set_lba_range_entries(buf, 512 / 8, block, n_block);
+        size = ata_set_lba_range_entries(buf, 512, block, n_block);
 
         tf->protocol = ATA_PROT_DMA;
         tf->hob_feature = 0;