ide: add missing validity checks for identify words 62 and 63



Check validity of identify words 62 and 63 before using them in
ide_get_mode_mask().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

parent 4728d546

drivers/ide/ide-dma.c

+4 −2

Original line number	Diff line number	Diff line
		@@ -731,9 +731,11 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive, u8 base)
		mask &= 0x07;
		break;
		case XFER_MW_DMA_0:
		if (id->field_valid & 2)
		mask = id->dma_mword & hwif->mwdma_mask;
		break;
		case XFER_SW_DMA_0:
		if (id->field_valid & 2)
		mask = id->dma_1word & hwif->swdma_mask;
		break;
		default: