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authorBorislav Petkov <petkovbb@gmail.com>2009-01-06 17:20:57 +0100
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-01-06 17:20:57 +0100
commit7a38f3cf019c4187d3d0e757e1c11b2b460e5b57 (patch)
tree1b0b815c1daa9e4a1de6b839d09e8eafa755f165 /drivers
parent744a82b004b0a08d55f579daa55e32d963353edc (diff)
downloadop-kernel-dev-7a38f3cf019c4187d3d0e757e1c11b2b460e5b57.zip
op-kernel-dev-7a38f3cf019c4187d3d0e757e1c11b2b460e5b57.tar.gz
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/ide/ide-cd.c21
1 files changed, 7 insertions, 14 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 6c7dd8f..1c1ba43 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 */
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