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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
This commit is contained in:
Akinobu Mita 2015-01-29 08:30:29 +09:00 committed by Tejun Heo
parent cedda4c3b1
commit 018d5ef204
12 changed files with 89 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/ata/ahci.h
View File

@ -354,6 +354,10 @@ extern int ahci_ignore_sss;
extern struct device_attribute *ahci_shost_attrs[];
extern struct device_attribute *ahci_sdev_attrs[];
/*
* This must be instantiated by the edge drivers. Read the comments
* for ATA_BASE_SHT
*/
#define AHCI_SHT(drv_name) \
ATA_NCQ_SHT(drv_name), \
.can_queue = AHCI_MAX_CMDS - 1, \

11
drivers/ata/ahci_da850.c
View File

@ -16,6 +16,8 @@
#include <linux/ahci_platform.h>
#include "ahci.h"
#define DRV_NAME "ahci_da850"
/* SATA PHY Control Register offset from AHCI base */
#define SATA_P0PHYCR_REG 0x178
@ -59,6 +61,10 @@ static const struct ata_port_info ahci_da850_port_info = {
.port_ops = &ahci_platform_ops,
};
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int ahci_da850_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -85,7 +91,8 @@ static int ahci_da850_probe(struct platform_device *pdev)
da850_sata_init(dev, pwrdn_reg, hpriv->mmio);
rc = ahci_platform_init_host(pdev, hpriv, &ahci_da850_port_info);
rc = ahci_platform_init_host(pdev, hpriv, &ahci_da850_port_info,
&ahci_platform_sht);
if (rc)
goto disable_resources;
@ -102,7 +109,7 @@ static struct platform_driver ahci_da850_driver = {
.probe = ahci_da850_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "ahci_da850",
.name = DRV_NAME,
.pm = &ahci_da850_pm_ops,
},
};

11
drivers/ata/ahci_imx.c
View File

@ -28,6 +28,8 @@
#include <linux/libata.h>
#include "ahci.h"
#define DRV_NAME "ahci-imx"
enum {
/* Timer 1-ms Register */
IMX_TIMER1MS = 0x00e0,
@ -520,6 +522,10 @@ static u32 imx_ahci_parse_props(struct device *dev,
return reg_value;
}
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int imx_ahci_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -616,7 +622,8 @@ static int imx_ahci_probe(struct platform_device *pdev)
reg_val = clk_get_rate(imxpriv->ahb_clk) / 1000;
writel(reg_val, hpriv->mmio + IMX_TIMER1MS);
ret = ahci_platform_init_host(pdev, hpriv, &ahci_imx_port_info);
ret = ahci_platform_init_host(pdev, hpriv, &ahci_imx_port_info,
&ahci_platform_sht);
if (ret)
goto disable_sata;
@ -674,7 +681,7 @@ static struct platform_driver imx_ahci_driver = {
.probe = imx_ahci_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "ahci-imx",
.name = DRV_NAME,
.of_match_table = imx_ahci_of_match,
.pm = &ahci_imx_pm_ops,
},

11
drivers/ata/ahci_mvebu.c
View File

@ -19,6 +19,8 @@
#include <linux/platform_device.h>
#include "ahci.h"
#define DRV_NAME "ahci-mvebu"
#define AHCI_VENDOR_SPECIFIC_0_ADDR 0xa0
#define AHCI_VENDOR_SPECIFIC_0_DATA 0xa4
@ -67,6 +69,10 @@ static const struct ata_port_info ahci_mvebu_port_info = {
.port_ops = &ahci_platform_ops,
};
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int ahci_mvebu_probe(struct platform_device *pdev)
{
struct ahci_host_priv *hpriv;
@ -88,7 +94,8 @@ static int ahci_mvebu_probe(struct platform_device *pdev)
ahci_mvebu_mbus_config(hpriv, dram);
ahci_mvebu_regret_option(hpriv);
rc = ahci_platform_init_host(pdev, hpriv, &ahci_mvebu_port_info);
rc = ahci_platform_init_host(pdev, hpriv, &ahci_mvebu_port_info,
&ahci_platform_sht);
if (rc)
goto disable_resources;
@ -114,7 +121,7 @@ static struct platform_driver ahci_mvebu_driver = {
.probe = ahci_mvebu_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "ahci-mvebu",
.name = DRV_NAME,
.of_match_table = ahci_mvebu_of_match,
},
};

11
drivers/ata/ahci_platform.c
View File

@ -22,6 +22,8 @@
#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,
@ -29,6 +31,10 @@ static const struct ata_port_info ahci_port_info = {
.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;
@ -46,7 +52,8 @@ static int ahci_probe(struct platform_device *pdev)
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);
rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info,
&ahci_platform_sht);
if (rc)
goto disable_resources;
@ -75,7 +82,7 @@ static struct platform_driver ahci_driver = {
.probe = ahci_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "ahci",
.name = DRV_NAME,
.of_match_table = ahci_of_match,
.pm = &ahci_pm_ops,
},

11
drivers/ata/ahci_st.c
View File

@ -23,6 +23,8 @@
#include "ahci.h"
#define DRV_NAME "st_ahci"
#define ST_AHCI_OOBR 0xbc
#define ST_AHCI_OOBR_WE BIT(31)
#define ST_AHCI_OOBR_CWMIN_SHIFT 24
@ -140,6 +142,10 @@ static const struct ata_port_info st_ahci_port_info = {
.port_ops = &st_ahci_port_ops,
};
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int st_ahci_probe(struct platform_device *pdev)
{
struct st_ahci_drv_data *drv_data;
@ -166,7 +172,8 @@ static int st_ahci_probe(struct platform_device *pdev)
if (err)
return err;
err = ahci_platform_init_host(pdev, hpriv, &st_ahci_port_info);
err = ahci_platform_init_host(pdev, hpriv, &st_ahci_port_info,
&ahci_platform_sht);
if (err) {
ahci_platform_disable_resources(hpriv);
return err;
@ -229,7 +236,7 @@ MODULE_DEVICE_TABLE(of, st_ahci_match);
static struct platform_driver st_ahci_driver = {
.driver = {
.name = "st_ahci",
.name = DRV_NAME,
.pm = &st_ahci_pm_ops,
.of_match_table = of_match_ptr(st_ahci_match),
},

11
drivers/ata/ahci_sunxi.c
View File

@ -27,6 +27,8 @@
#include <linux/regulator/consumer.h>
#include "ahci.h"
#define DRV_NAME "ahci-sunxi"
/* Insmod parameters */
static bool enable_pmp;
module_param(enable_pmp, bool, 0);
@ -169,6 +171,10 @@ static const struct ata_port_info ahci_sunxi_port_info = {
.port_ops = &ahci_platform_ops,
};
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int ahci_sunxi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -200,7 +206,8 @@ static int ahci_sunxi_probe(struct platform_device *pdev)
if (!enable_pmp)
hpriv->flags |= AHCI_HFLAG_NO_PMP;
rc = ahci_platform_init_host(pdev, hpriv, &ahci_sunxi_port_info);
rc = ahci_platform_init_host(pdev, hpriv, &ahci_sunxi_port_info,
&ahci_platform_sht);
if (rc)
goto disable_resources;
@ -251,7 +258,7 @@ static struct platform_driver ahci_sunxi_driver = {
.probe = ahci_sunxi_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "ahci-sunxi",
.name = DRV_NAME,
.of_match_table = ahci_sunxi_of_match,
.pm = &ahci_sunxi_pm_ops,
},

11
drivers/ata/ahci_tegra.c
View File

@ -31,6 +31,8 @@
#include "ahci.h"
#define DRV_NAME "tegra-ahci"
#define SATA_CONFIGURATION_0 0x180
#define SATA_CONFIGURATION_EN_FPCI BIT(0)
@ -289,6 +291,10 @@ static const struct of_device_id tegra_ahci_of_match[] = {
};
MODULE_DEVICE_TABLE(of, tegra_ahci_of_match);
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int tegra_ahci_probe(struct platform_device *pdev)
{
struct ahci_host_priv *hpriv;
@ -354,7 +360,8 @@ static int tegra_ahci_probe(struct platform_device *pdev)
if (ret)
return ret;
ret = ahci_platform_init_host(pdev, hpriv, &ahci_tegra_port_info);
ret = ahci_platform_init_host(pdev, hpriv, &ahci_tegra_port_info,
&ahci_platform_sht);
if (ret)
goto deinit_controller;
@ -370,7 +377,7 @@ static struct platform_driver tegra_ahci_driver = {
.probe = tegra_ahci_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "tegra-ahci",
.name = DRV_NAME,
.of_match_table = tegra_ahci_of_match,
},
/* LP0 suspend support not implemented */

11
drivers/ata/ahci_xgene.c
View File

@ -30,6 +30,8 @@
#include <linux/phy/phy.h>
#include "ahci.h"
#define DRV_NAME "xgene-ahci"
/* Max # of disk per a controller */
#define MAX_AHCI_CHN_PERCTR 2
@ -621,6 +623,10 @@ static int xgene_ahci_mux_select(struct xgene_ahci_context *ctx)
return val & CFG_SATA_ENET_SELECT_MASK ? -1 : 0;
}
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT(DRV_NAME),
};
static int xgene_ahci_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -698,7 +704,8 @@ static int xgene_ahci_probe(struct platform_device *pdev)
skip_clk_phy:
hpriv->flags = AHCI_HFLAG_NO_PMP | AHCI_HFLAG_NO_NCQ;
rc = ahci_platform_init_host(pdev, hpriv, &xgene_ahci_port_info);
rc = ahci_platform_init_host(pdev, hpriv, &xgene_ahci_port_info,
&ahci_platform_sht);
if (rc)
goto disable_resources;
@ -720,7 +727,7 @@ static struct platform_driver xgene_ahci_driver = {
.probe = xgene_ahci_probe,
.remove = ata_platform_remove_one,
.driver = {
.name = "xgene-ahci",
.name = DRV_NAME,
.of_match_table = xgene_ahci_of_match,
},
};

10
drivers/ata/libahci_platform.c
View File

@ -35,10 +35,6 @@ struct ata_port_operations ahci_platform_ops = {
};
EXPORT_SYMBOL_GPL(ahci_platform_ops);
static struct scsi_host_template ahci_platform_sht = {
AHCI_SHT("ahci_platform"),
};
/**
* ahci_platform_enable_phys - Enable PHYs
* @hpriv: host private area to store config values
@ -494,6 +490,7 @@ EXPORT_SYMBOL_GPL(ahci_platform_get_resources);
* @pdev: platform device pointer for the host
* @hpriv: ahci-host private data for the host
* @pi_template: template for the ata_port_info to use
* @sht: scsi_host_template to use when registering
*
* This function does all the usual steps needed to bring up an
* ahci-platform host, note any necessary resources (ie clks, phys, etc.)
@ -504,7 +501,8 @@ EXPORT_SYMBOL_GPL(ahci_platform_get_resources);
*/
int ahci_platform_init_host(struct platform_device *pdev,
struct ahci_host_priv *hpriv,
const struct ata_port_info *pi_template)
const struct ata_port_info *pi_template,
struct scsi_host_template *sht)
{
struct device *dev = &pdev->dev;
struct ata_port_info pi = *pi_template;
@ -588,7 +586,7 @@ int ahci_platform_init_host(struct platform_device *pdev,
ahci_init_controller(host);
ahci_print_info(host, "platform");
return ahci_host_activate(host, irq, &ahci_platform_sht);
return ahci_host_activate(host, irq, sht);
}
EXPORT_SYMBOL_GPL(ahci_platform_init_host);

4
include/linux/ahci_platform.h
View File

@ -21,6 +21,7 @@ struct device;
struct ata_port_info;
struct ahci_host_priv;
struct platform_device;
struct scsi_host_template;
int ahci_platform_enable_clks(struct ahci_host_priv *hpriv);
void ahci_platform_disable_clks(struct ahci_host_priv *hpriv);
@ -32,7 +33,8 @@ struct ahci_host_priv *ahci_platform_get_resources(
struct platform_device *pdev);
int ahci_platform_init_host(struct platform_device *pdev,
struct ahci_host_priv *hpriv,
const struct ata_port_info *pi_template);
const struct ata_port_info *pi_template,
struct scsi_host_template *sht);
int ahci_platform_suspend_host(struct device *dev);
int ahci_platform_resume_host(struct device *dev);

6
include/linux/libata.h
View File

@ -1338,6 +1338,12 @@ extern const struct ata_port_operations ata_base_port_ops;
extern const struct ata_port_operations sata_port_ops;
extern struct device_attribute *ata_common_sdev_attrs[];
/*
* All sht initializers (BASE, PIO, BMDMA, NCQ) must be instantiated
* by the edge drivers. Because the 'module' field of sht must be the
* edge driver's module reference, otherwise the driver can be unloaded
* even if the scsi_device is being accessed.
*/
#define ATA_BASE_SHT(drv_name) \
.module = THIS_MODULE, \
.name = drv_name, \