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[PATCH] libata-eh: Remove layering violation and duplication when handling absent ports

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This removes the layering violation where drivers have to fiddle
directly with EH flags. Instead we now recognize -ENOENT means "no port"
and do the handling in the core code.

This also removes an instance of a call to disable the port, and an
identical printk from each driver doing this. Even better - future rule
changes will be in one place only.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox
2006-09-26 17:53:38 +01:00
committed by Jeff Garzik
parent 4735ebedf3
commit c961922b73
17 changed files with 67 additions and 108 deletions
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11
drivers/ata/pata_mpiix.c
View File

@@ -18,7 +18,7 @@
* The driver conciously keeps this logic internally to avoid pushing quirky
* PATA history into the clean libata layer.
*
* Thinkpad specific note: If you boot an MPIIX using thinkpad with a PCMCIA
* Thinkpad specific note: If you boot an MPIIX using a thinkpad with a PCMCIA
* hard disk present this driver will not detect it. This is not a bug. In this
* configuration the secondary port of the MPIIX is disabled and the addresses
* are decoded by the PCMCIA bridge and therefore are for a generic IDE driver
@@ -35,7 +35,7 @@
#include <linux/libata.h>
#define DRV_NAME "pata_mpiix"
#define DRV_VERSION "0.7.1"
#define DRV_VERSION "0.7.2"
enum {
IDETIM = 0x6C, /* IDE control register */
@@ -54,11 +54,8 @@ static int mpiix_pre_reset(struct ata_port *ap)
{ 0x6F, 1, 0x80, 0x80 }
};
if (!pci_test_config_bits(pdev, &mpiix_enable_bits[ap->port_no])) {
ata_port_disable(ap);
printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
return 0;
}
if (!pci_test_config_bits(pdev, &mpiix_enable_bits[ap->port_no]))
return -ENOENT;
ap->cbl = ATA_CBL_PATA40;
return ata_std_prereset(ap);
}