ide-atapi: teach ide atapi about drive->waiting_for_dma
In addition, we wait for DRQ to be asserted by repeatedly polling
device status no matter what DRQ type each device implements.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 8884877..8c5cf68 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -511,6 +511,11 @@
return startstop;
}
+ if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
+ if (drive->dma)
+ drive->waiting_for_dma = 1;
+ }
+
ireason = ide_read_ireason(drive);
if (drive->media == ide_tape &&
(drive->dev_flags & IDE_DFLAG_SCSI) == 0)
@@ -605,6 +610,8 @@
/* Issue the packet command */
if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
+ if (drive->dma)
+ drive->waiting_for_dma = 0;
ide_execute_command(drive, ATA_CMD_PACKET, ide_transfer_pc,
timeout, NULL);
return ide_started;