Commit 3649c06e authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

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: default avatarBartlomiej 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: