From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: [PATCH] add delay around sl82c105_reset_engine calls Date: Mon, 4 Dec 2006 13:40:26 +0100 (MET) Message-ID: <20061204124026.GB28159@aepfle.de> References: <20061130165202.GA23205@aepfle.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20061130165202.GA23205@aepfle.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org Errors-To: linuxppc-dev-bounces+glppd-linuxppc64-dev=m.gmane.org@ozlabs.org To: linux-ide@vger.kernel.org, linuxppc-dev@ozlabs.org List-Id: linux-ide@vger.kernel.org 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 --- 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 */