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-rw-r--r--drivers/ide/ide-cd.c7
-rw-r--r--drivers/ide/pci/piix.c4
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 88214943d00..5969cec58dc 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -687,8 +687,15 @@ static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 sta
static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
{
struct request *rq = HWGROUP(drive)->rq;
+ ide_hwif_t *hwif = HWIF(drive);
int stat, err, sense_key;
+ /* We may have bogus DMA interrupts in PIO state here */
+ if (HWIF(drive)->dma_status && hwif->atapi_irq_bogon) {
+ stat = hwif->INB(hwif->dma_status);
+ /* Should we force the bit as well ? */
+ hwif->OUTB(stat, hwif->dma_status);
+ }
/* Check for errors. */
stat = HWIF(drive)->INB(IDE_STATUS_REG);
if (stat_ret)
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index cdc3aab9ebc..b1e9a8eba6b 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -505,6 +505,10 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
/* This is a painful system best to let it self tune for now */
return;
}
+ /* ESB2 appears to generate spurious DMA interrupts in PIO mode
+ when in native mode */
+ if (hwif->pci_dev->device == PCI_DEVICE_ID_INTEL_ESB2_18)
+ hwif->atapi_irq_bogon = 1;
hwif->autodma = 0;
hwif->tuneproc = &piix_tune_drive;