In commit af7ddd8a627c ("Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping"), dmam_alloc_coherent has already zeroed the memory. So memset is not needed. Signed-off-by: Fuqian Huang <huangfq.daxian@xxxxxxxxx> --- drivers/ata/sata_qstor.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/ata/sata_qstor.c b/drivers/ata/sata_qstor.c index 7ec0c216a6a6..865e5c58bd94 100644 --- a/drivers/ata/sata_qstor.c +++ b/drivers/ata/sata_qstor.c @@ -477,7 +477,6 @@ static int qs_port_start(struct ata_port *ap) GFP_KERNEL); if (!pp->pkt) return -ENOMEM; - memset(pp->pkt, 0, QS_PKT_BYTES); ap->private_data = pp; qs_enter_reg_mode(ap); -- 2.11.0