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From: Alan Cox <alan@redhat.com>
To: Alessandro Zummo <alessandro.zummo@towertech.it>
Cc: Jeff Garzik <jgarzik@redhat.com>, Alan Cox <alan@redhat.com>
Subject: Re: drivers/ata/pata_artop.c
Date: Sun, 15 Oct 2006 14:25:16 -0400
User-Agent: Mutt/1.4.1i
On Sun, Oct 15, 2006 at 07:18:31PM +0200, Alessandro Zummo wrote:
> In the discovery phase there's a lot of time spent in the detection
> of the second port.
The error recovery is a bit determined right now - Tejun's been doing some
work on SRST behaviour and also for the worst cases polled detect so it
should come out ok
> What's the correct way to inform the driver
> to avoid checking the second port?
Set the number of ports to 1 in your own tree for now. The real fix is
not to go poking at pata ports if the ret is 0xFF
---
drivers/ata/pata_artop.c | 6 ++++++
1 file changed, 6 insertions(+)
Index: linux-2.6.21.7/drivers/ata/pata_artop.c
===================================================================
--- linux-2.6.21.7.orig/drivers/ata/pata_artop.c
+++ linux-2.6.21.7/drivers/ata/pata_artop.c
@@ -26,6 +26,7 @@
#include <scsi/scsi_host.h>
#include <linux/libata.h>
#include <linux/ata.h>
+#include <asm/mach-types.h>
#define DRV_NAME "pata_artop"
#define DRV_VERSION "0.4.2"
@@ -469,6 +470,11 @@ static int artop_init_one (struct pci_de
pci_read_config_byte(pdev, 0x4a, ®);
pci_write_config_byte(pdev, 0x4a, (reg & ~0x01) | 0x80);
+ /* NAS100D workaround */
+#ifdef CONFIG_MACH_NAS100D
+ if (machine_is_nas100d())
+ ports = 1;
+#endif
}
BUG_ON(info == NULL);
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