libata: stop overloading port_info->private_data
port_info->private_data is currently used for two purposes - to record
private data about the port_info or to specify host->private_data to
use when allocating ata_host.
This overloading is confusing and counter-intuitive in that
port_info->private_data becomes host->private_data instead of
port->private_data. In addition, port_info and host don't correspond
to each other 1-to-1. Currently, the first non-NULL
port_info->private_data is used.
This patch makes port_info->private_data just be what it is -
private_data for the port_info where LLD can jot down extra info.
libata no longer sets host->private_data to the first non-NULL
port_info->private_data, @host_priv argument is added to
ata_pci_init_one() instead. LLDs which use ata_pci_init_one() can use
this argument to pass in pointer to host private data. LLDs which
don't should use init-register model anyway and can initialize
host->private_data directly.
Adding @host_priv instead of using init-register model for LLDs which
use ata_pci_init_one() is suggested by Alan Cox.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
diff --git a/drivers/ata/pata_amd.c b/drivers/ata/pata_amd.c
index 644702c..09c8286 100644
--- a/drivers/ata/pata_amd.c
+++ b/drivers/ata/pata_amd.c
@@ -144,12 +144,6 @@
return ata_std_prereset(link, deadline);
}
-static void amd_error_handler(struct ata_port *ap)
-{
- ata_bmdma_drive_eh(ap, amd_pre_reset, ata_std_softreset, NULL,
- ata_std_postreset);
-}
-
static int amd_cable_detect(struct ata_port *ap)
{
static const u32 bitmask[2] = {0x03, 0x0C};
@@ -300,13 +294,6 @@
return ata_std_prereset(link, deadline);
}
-static void nv_error_handler(struct ata_port *ap)
-{
- ata_bmdma_drive_eh(ap, nv_pre_reset,
- ata_std_softreset, NULL,
- ata_std_postreset);
-}
-
/**
* nv100_set_piomode - set initial PIO mode data
* @ap: ATA interface
@@ -358,7 +345,7 @@
static const struct ata_port_operations amd_base_port_ops = {
.inherits = &ata_bmdma_port_ops,
- .error_handler = amd_error_handler,
+ .prereset = amd_pre_reset,
};
static struct ata_port_operations amd33_port_ops = {
@@ -393,7 +380,7 @@
.inherits = &ata_bmdma_port_ops,
.cable_detect = ata_cable_ignore,
.mode_filter = nv_mode_filter,
- .error_handler = nv_error_handler,
+ .prereset = nv_pre_reset,
.host_stop = nv_host_stop,
};
@@ -483,10 +470,10 @@
.port_ops = &amd100_port_ops
}
};
- struct ata_port_info pi;
- const struct ata_port_info *ppi[] = { &pi, NULL };
+ const struct ata_port_info *ppi[] = { NULL, NULL };
static int printed_version;
int type = id->driver_data;
+ void *hpriv = NULL;
u8 fifo;
int rc;
@@ -511,7 +498,7 @@
/*
* Okay, type is determined now. Apply type-specific workarounds.
*/
- pi = info[type];
+ ppi[0] = &info[type];
if (type < 3)
ata_pci_clear_simplex(pdev);
@@ -530,11 +517,11 @@
u32 udma;
pci_read_config_dword(pdev, 0x60, &udma);
- pi.private_data = (void *)(unsigned long)udma;
+ hpriv = (void *)(unsigned long)udma;
}
/* And fire it up */
- return ata_pci_init_one(pdev, ppi, &amd_sht);
+ return ata_pci_init_one(pdev, ppi, &amd_sht, hpriv);
}
#ifdef CONFIG_PM