ide-cd: wait for DRQ to get set per default

... instead of assuming it is set for accelerated DRQ type devices.

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

1 files changed, 7 insertions, 14 deletions

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 6c7dd8fd8638..1c1ba43c263c 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -572,24 +572,17 @@ static ide_startstop_t cdrom_transfer_packet_command(ide_drive_t *drive)
 
         ide_debug_log(IDE_DBG_PC, "Call %s\n", __func__);
 
-        if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
-                /*
-                 * Here we should have been called after receiving an interrupt
-                 * from the device.  DRQ should how be set.
-                 */
-
-                /* check for errors */
-                if (cdrom_decode_status(drive, ATA_DRQ, NULL))
-                        return ide_stopped;
+        /* we must wait for DRQ to get set */
+        if (ide_wait_stat(&startstop, drive, ATA_DRQ, ATA_BUSY, WAIT_READY)) {
+                printk(KERN_ERR "%s: timeout while waiting for DRQ to assert\n",
+                                drive->name);
+                return startstop;
+        }
 
+        if (drive->atapi_flags & IDE_AFLAG_DRQ_INTERRUPT) {
                 /* ok, next interrupt will be DMA interrupt */
                 if (drive->dma)
                         drive->waiting_for_dma = 1;
-        } else {
-                /* otherwise, we must wait for DRQ to get set */
-                if (ide_wait_stat(&startstop, drive, ATA_DRQ,
-                                  ATA_BUSY, WAIT_READY))
-                        return startstop;
         }
 
         /* arm the interrupt handler */