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| author | Albert Lee <albertcc@tw.ibm.com> | 2007-02-17 02:40:21 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2007-02-17 02:40:21 +0100 |
| commit | f0dd8712eb8cc5687b4582fbc41cfbcd55bba0d2 (patch) | |
| tree | 190bc6cf68e056ae72d895dc2c9074de2c0ed18f /drivers/ide/ide-cd.c | |
| parent | fdb77da4ca68ae17a39d58c9d5c00479a7e124c0 (diff) | |
| download | op-kernel-dev-f0dd8712eb8cc5687b4582fbc41cfbcd55bba0d2.zip op-kernel-dev-f0dd8712eb8cc5687b4582fbc41cfbcd55bba0d2.tar.gz | |
ide: clear bmdma status in ide_intr() for ICHx controllers (revised #4)
patch 1/2 (revised):
- Fix drive->waiting_for_dma to work with CDB-intr devices.
- Do the dma status clearing in ide_intr() and add a new
hwif->ide_dma_clear_irq for Intel ICHx controllers.
Revised per Alan, Sergei and Bart's advice.
Patch against 2.6.20-rc6. Tested ok on my ICH4 and pdc20275 adapters.
Please review/apply, thanks.
Signed-off-by: Albert Lee <albertcc@tw.ibm.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: "Adam W. Hawks" <awhawks@us.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-cd.c')
| -rw-r--r-- | drivers/ide/ide-cd.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 5969cec..21f4ae2 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -930,6 +930,10 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive, HWIF(drive)->OUTB(drive->ctl, IDE_CONTROL_REG); if (CDROM_CONFIG_FLAGS (drive)->drq_interrupt) { + /* waiting for CDB interrupt, not DMA yet. */ + if (info->dma) + drive->waiting_for_dma = 0; + /* packet command */ ide_execute_command(drive, WIN_PACKETCMD, handler, ATAPI_WAIT_PC, cdrom_timer_expiry); return ide_started; @@ -972,6 +976,10 @@ static ide_startstop_t cdrom_transfer_packet_command (ide_drive_t *drive, /* Check for errors. */ if (cdrom_decode_status(drive, DRQ_STAT, NULL)) return ide_stopped; + + /* Ok, next interrupt will be DMA interrupt. */ + if (info->dma) + drive->waiting_for_dma = 1; } else { /* Otherwise, we must wait for DRQ to get set. */ if (ide_wait_stat(&startstop, drive, DRQ_STAT, |
