linux/drivers/ata/ahci_platform.c
Akinobu Mita 018d5ef204 ata: ahci_platform: fix owner module reference mismatch for scsi host
The owner module reference of the ahci platform's scsi_host is
initialized to libahci_platform's one, because these drivers use a
scsi_host_template defined in libahci_platform.  So these drivers can
be unloaded even if the scsi device is being accessed.

This fixes it by pushing the scsi_host_template from libahci_platform
to all leaf drivers.  The scsi_host_template is passed through a new
argument of ahci_platform_init_host().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: linux-ide@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
2015-01-28 18:45:23 -05:00

96 lines
2.4 KiB
C

/*
* AHCI SATA platform driver
*
* Copyright 2004-2005 Red Hat, Inc.
* Jeff Garzik <jgarzik@pobox.com>
* Copyright 2010 MontaVista Software, LLC.
* Anton Vorontsov <avorontsov@ru.mvista.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/pm.h>
#include <linux/device.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/libata.h>
#include <linux/ahci_platform.h>
#include "ahci.h"
#define DRV_NAME "ahci"
static const struct ata_port_info ahci_port_info = {
.flags = AHCI_FLAG_COMMON,
.pio_mask = ATA_PIO4,
.udma_mask = ATA_UDMA6,
.port_ops = &ahci_platform_ops,
};
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int ahci_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct ahci_host_priv *hpriv;
int rc;
hpriv = ahci_platform_get_resources(pdev);
if (IS_ERR(hpriv))
return PTR_ERR(hpriv);
rc = ahci_platform_enable_resources(hpriv);
if (rc)
return rc;
if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
&ahci_platform_sht);
if (rc)
goto disable_resources;
return 0;
disable_resources:
ahci_platform_disable_resources(hpriv);
return rc;
}
static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
ahci_platform_resume);
static const struct of_device_id ahci_of_match[] = {
{ .compatible = "generic-ahci", },
/* Keep the following compatibles for device tree compatibility */
{ .compatible = "snps,spear-ahci", },
{ .compatible = "snps,exynos5440-ahci", },
{ .compatible = "ibm,476gtr-ahci", },
{ .compatible = "snps,dwc-ahci", },
{ .compatible = "hisilicon,hisi-ahci", },
{},
};
MODULE_DEVICE_TABLE(of, ahci_of_match);
static struct platform_driver ahci_driver = {
.probe = ahci_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = DRV_NAME,
.of_match_table = ahci_of_match,
.pm = &ahci_pm_ops,
},
};
module_platform_driver(ahci_driver);
MODULE_DESCRIPTION("AHCI SATA platform driver");
MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:ahci");