From: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Date: Tue, 12 Oct 2021 06:27:47 +0000 (+0200)
Subject: pata_amd: fix checking of DMA state
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2367ad63a1314f861dcd66c50d6e5508bb1edac1;p=linux.git

pata_amd: fix checking of DMA state

Checking if DMA is enabled should be done via the
ata_dma_enabled helper function, since the init state
0xff indicates disabled.
Change based on code review, not tested due to lack of hardware.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
---

diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index c8acba162d02f..154748cfcc79f 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -66,7 +66,7 @@ static void timing_setup(struct ata_port *ap, struct ata_device *adev, int offse
 
 	if (peer) {
 		/* This may be over conservative */
-		if (peer->dma_mode) {
+		if (ata_dma_enabled(peer)) {
 			ata_timing_compute(peer, peer->dma_mode, &apeer, T, UT);
 			ata_timing_merge(&apeer, &at, &at, ATA_TIMING_8BIT);
 		}