1 files changed, 18 insertions, 11 deletions

diff --git a/drivers/ata/sata_inic162x.c b/drivers/ata/sata_inic162x.c
index 2d80c9d95e9..a9c948d7604 100644
--- a/drivers/ata/sata_inic162x.c
+++ b/drivers/ata/sata_inic162x.c
@@ -190,34 +190,34 @@ static void inic_reset_port(void __iomem *port_base)
 	writew(ctl, idma_ctl);
 }
 
-static u32 inic_scr_read(struct ata_port *ap, unsigned sc_reg)
+static int inic_scr_read(struct ata_port *ap, unsigned sc_reg, u32 *val)
 {
-	void __iomem *scr_addr = (void __iomem *)ap->ioaddr.scr_addr;
+	void __iomem *scr_addr = ap->ioaddr.scr_addr;
 	void __iomem *addr;
-	u32 val;
 
 	if (unlikely(sc_reg >= ARRAY_SIZE(scr_map)))
-		return 0xffffffffU;
+		return -EINVAL;
 
 	addr = scr_addr + scr_map[sc_reg] * 4;
-	val = readl(scr_addr + scr_map[sc_reg] * 4);
+	*val = readl(scr_addr + scr_map[sc_reg] * 4);
 
 	/* this controller has stuck DIAG.N, ignore it */
 	if (sc_reg == SCR_ERROR)
-		val &= ~SERR_PHYRDY_CHG;
-	return val;
+		*val &= ~SERR_PHYRDY_CHG;
+	return 0;
 }
 
-static void inic_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val)
+static int inic_scr_write(struct ata_port *ap, unsigned sc_reg, u32 val)
 {
-	void __iomem *scr_addr = (void __iomem *)ap->ioaddr.scr_addr;
+	void __iomem *scr_addr = ap->ioaddr.scr_addr;
 	void __iomem *addr;
 
 	if (unlikely(sc_reg >= ARRAY_SIZE(scr_map)))
-		return;
+		return -EINVAL;
 
 	addr = scr_addr + scr_map[sc_reg] * 4;
 	writel(val, scr_addr + scr_map[sc_reg] * 4);
+	return 0;
 }
 
 /*
@@ -496,6 +496,13 @@ static void inic_dev_config(struct ata_device *dev)
 	/* inic can only handle upto LBA28 max sectors */
 	if (dev->max_sectors > ATA_MAX_SECTORS)
 		dev->max_sectors = ATA_MAX_SECTORS;
+
+	if (dev->n_sectors >= 1 << 28) {
+		ata_dev_printk(dev, KERN_ERR,
+	"ERROR: This driver doesn't support LBA48 yet and may cause\n"
+	"                data corruption on such devices.  Disabling.\n");
+		ata_dev_disable(dev);
+	}
 }
 
 static void init_port(struct ata_port *ap)
@@ -587,7 +594,7 @@ static struct ata_port_info inic_port_info = {
 	.flags			= ATA_FLAG_SATA | ATA_FLAG_PIO_DMA,
 	.pio_mask		= 0x1f,	/* pio0-4 */
 	.mwdma_mask		= 0x07, /* mwdma0-2 */
-	.udma_mask		= 0x7f,	/* udma0-6 */
+	.udma_mask		= ATA_UDMA6,
 	.port_ops		= &inic_port_ops
 };