[PATCH] add delay around sl82c105_reset_engine calls
Olaf Hering
olaf at aepfle.de
Mon Dec 4 23:40:26 EST 2006
the hald media changed polling does really confuse things.
noone knows why the delays are needed, but they give us access to
the CD.
Signed-off-by: Olaf Hering <olaf at aepfle.de>
---
drivers/scsi/pata_sl82c105.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/scsi/pata_sl82c105.c
+++ b/drivers/scsi/pata_sl82c105.c
@@ -187,7 +187,9 @@ static void sl82c105_bmdma_start(struct
{
struct ata_port *ap = qc->ap;
+ udelay(50);
sl82c105_reset_engine(ap);
+ udelay(50);
/* Set the clocks for DMA */
sl82c105_configure_dmamode(ap, qc->dev);
@@ -216,6 +218,7 @@ static void sl82c105_bmdma_stop(struct a
ata_bmdma_stop(qc);
sl82c105_reset_engine(ap);
+ udelay(50);
/* This will redo the initial setup of the DMA device to matching
PIO timings */
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