From: Tejun Heo <htejun@gmail.com>
Date: Tue, 11 Apr 2006 13:32:19 +0000 (+0900)
Subject: [PATCH] sata_sil24: fix on-memory structure byteorder
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bad28a37f5e4ab1db5c5f01b77664597b02b257f;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[PATCH] sata_sil24: fix on-memory structure byteorder

Data structures residing on memory and fetched by the controller
should have LE ordering.  Fix it.

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

diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c
index a8328a88e8c..8ef51d0dcda 100644
--- a/drivers/scsi/sata_sil24.c
+++ b/drivers/scsi/sata_sil24.c
@@ -481,7 +481,7 @@ static int sil24_softreset(struct ata_port *ap, unsigned int *class)
 	}
 
 	/* do SRST */
-	prb->ctrl = PRB_CTRL_SRST;
+	prb->ctrl = cpu_to_le16(PRB_CTRL_SRST);
 	prb->fis[1] = 0; /* no PM yet */
 
 	writel((u32)paddr, port + PORT_CMD_ACTIVATE);
@@ -597,6 +597,7 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc)
 	union sil24_cmd_block *cb = pp->cmd_block + qc->tag;
 	struct sil24_prb *prb;
 	struct sil24_sge *sge;
+	u16 ctrl = 0;
 
 	switch (qc->tf.protocol) {
 	case ATA_PROT_PIO:
@@ -604,7 +605,6 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc)
 	case ATA_PROT_NODATA:
 		prb = &cb->ata.prb;
 		sge = cb->ata.sge;
-		prb->ctrl = 0;
 		break;
 
 	case ATA_PROT_ATAPI:
@@ -617,12 +617,10 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc)
 
 		if (qc->tf.protocol != ATA_PROT_ATAPI_NODATA) {
 			if (qc->tf.flags & ATA_TFLAG_WRITE)
-				prb->ctrl = PRB_CTRL_PACKET_WRITE;
+				ctrl = PRB_CTRL_PACKET_WRITE;
 			else
-				prb->ctrl = PRB_CTRL_PACKET_READ;
-		} else
-			prb->ctrl = 0;
-
+				ctrl = PRB_CTRL_PACKET_READ;
+		}
 		break;
 
 	default:
@@ -631,6 +629,7 @@ static void sil24_qc_prep(struct ata_queued_cmd *qc)
 		BUG();
 	}
 
+	prb->ctrl = cpu_to_le16(ctrl);
 	ata_tf_to_fis(&qc->tf, prb->fis, 0);
 
 	if (qc->flags & ATA_QCFLAG_DMAMAP)