[PATCH] libata: trivial updates to ata_sg_init_one()

There's no need to memset &qc->sgent manually, sg_init_one() clears
sgent inside it.  Also, kill not-so-necessary sg local variable.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 1 insertions, 5 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 21f8d61e5879..a52c07198839 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -3491,19 +3491,15 @@ void ata_noop_qc_prep(struct ata_queued_cmd *qc) { }
 
 void ata_sg_init_one(struct ata_queued_cmd *qc, void *buf, unsigned int buflen)
 {
-        struct scatterlist *sg;
-
         qc->flags |= ATA_QCFLAG_SINGLE;
 
-        memset(&qc->sgent, 0, sizeof(qc->sgent));
         qc->__sg = &qc->sgent;
         qc->n_elem = 1;
         qc->orig_n_elem = 1;
         qc->buf_virt = buf;
         qc->nbytes = buflen;
 
-        sg = qc->__sg;
-        sg_init_one(sg, buf, buflen);
+        sg_init_one(&qc->sgent, buf, buflen);
 }
 
 /**