ata: libata: Rename ata_dma_blacklisted()

Rename the function ata_dma_blacklisted() to ata_dev_nodma() as this new
name is more neutral. The function signature is also changed to return a
boolean instead of an int.
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Igor Pylypiv <ipylypiv@google.com>
Reviewed-by: Niklas Cassel <cassel@kernel.org>

drivers/ata/libata-core.c

@@ -4287,16 +4287,17 @@ static unsigned long ata_dev_blacklisted(const struct ata_device *dev)
 	return 0;
 }
 
-static int ata_dma_blacklisted(const struct ata_device *dev)
+static bool ata_dev_nodma(const struct ata_device *dev)
 {
-	/* We don't support polling DMA.
-	 * DMA blacklist those ATAPI devices with CDB-intr (and use PIO)
-	 * if the LLDD handles only interrupts in the HSM_ST_LAST state.
+	/*
+	 * We do not support polling DMA. Deny DMA for those ATAPI devices
+	 * with CDB-intr (and use PIO) if the LLDD handles only interrupts in
+	 * the HSM_ST_LAST state.
 	 */
 	if ((dev->link->ap->flags & ATA_FLAG_PIO_POLLING) &&
 	    (dev->flags & ATA_DFLAG_CDB_INTR))
-		return 1;
-	return (dev->horkage & ATA_HORKAGE_NODMA) ? 1 : 0;
+		return true;
+	return dev->horkage & ATA_HORKAGE_NODMA;
 }
 
 /**
@@ -4404,10 +4405,10 @@ static void ata_dev_xfermask(struct ata_device *dev)
 		xfer_mask &= ~(0x03 << (ATA_SHIFT_MWDMA + 3));
 	}
 
-	if (ata_dma_blacklisted(dev)) {
+	if (ata_dev_nodma(dev)) {
 		xfer_mask &= ~(ATA_MASK_MWDMA | ATA_MASK_UDMA);
 		ata_dev_warn(dev,
-			     "device is on DMA blacklist, disabling DMA\n");
+			     "device does not support DMA, disabling DMA\n");
 	}
 
 	if ((host->flags & ATA_HOST_SIMPLEX) &&