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_marvell.c b/drivers/ata/pata_marvell.c
index d8da4f34..d38e64c 100644
--- a/drivers/ata/pata_marvell.c
+++ b/drivers/ata/pata_marvell.c
@@ -75,20 +75,6 @@
return 0; /* Our BUG macro needs the right markup */
}
-/**
- * marvell_error_handler - Setup and error handler
- * @ap: Port to handle
- *
- * LOCKING:
- * None (inherited from caller).
- */
-
-static void marvell_error_handler(struct ata_port *ap)
-{
- ata_bmdma_drive_eh(ap, marvell_pre_reset, ata_std_softreset, NULL,
- ata_std_postreset);
-}
-
/* No PIO or DMA methods needed for this device */
static struct scsi_host_template marvell_sht = {
@@ -98,7 +84,7 @@
static struct ata_port_operations marvell_ops = {
.inherits = &ata_bmdma_port_ops,
.cable_detect = marvell_cable_detect,
- .error_handler = marvell_error_handler,
+ .prereset = marvell_pre_reset,
};
@@ -142,7 +128,7 @@
if (pdev->device == 0x6101)
ppi[1] = &ata_dummy_port_info;
- return ata_pci_init_one(pdev, ppi, &marvell_sht);
+ return ata_pci_init_one(pdev, ppi, &marvell_sht, NULL);
}
static const struct pci_device_id marvell_pci_tbl[] = {