Revision 016e8d44bc06dd3322f26712bdd3f3a6973592d0 authored by Josh Boyer on 19 August 2011, 18:50:26 UTC, committed by Al Viro on 19 November 2011, 16:13:26 UTC
Newer versions of MINIX can create filesystems that allocate an extra bitmap block. Mounting of this succeeds, but doing a statfs call will result in an oops in count_free because of a negative number being used for the bh index. Avoid this by verifying the number of allocated blocks at mount time, erroring out if there are not enough and make statfs ignore the extras if there are too many. This fixes https://bugzilla.kernel.org/show_bug.cgi?id=18792 Signed-off-by: Josh Boyer <jwboyer@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
1 parent d633180
rdc321x-southbridge.c
/*
* RDC321x MFD southbrige driver
*
* Copyright (C) 2007-2010 Florian Fainelli <florian@openwrt.org>
* Copyright (C) 2010 Bernhard Loos <bernhardloos@googlemail.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 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/mfd/core.h>
#include <linux/mfd/rdc321x.h>
static struct rdc321x_wdt_pdata rdc321x_wdt_pdata;
static struct resource rdc321x_wdt_resource[] = {
{
.name = "wdt-reg",
.start = RDC321X_WDT_CTRL,
.end = RDC321X_WDT_CTRL + 0x3,
.flags = IORESOURCE_IO,
}
};
static struct rdc321x_gpio_pdata rdc321x_gpio_pdata = {
.max_gpios = RDC321X_MAX_GPIO,
};
static struct resource rdc321x_gpio_resources[] = {
{
.name = "gpio-reg1",
.start = RDC321X_GPIO_CTRL_REG1,
.end = RDC321X_GPIO_CTRL_REG1 + 0x7,
.flags = IORESOURCE_IO,
}, {
.name = "gpio-reg2",
.start = RDC321X_GPIO_CTRL_REG2,
.end = RDC321X_GPIO_CTRL_REG2 + 0x7,
.flags = IORESOURCE_IO,
}
};
static struct mfd_cell rdc321x_sb_cells[] = {
{
.name = "rdc321x-wdt",
.resources = rdc321x_wdt_resource,
.num_resources = ARRAY_SIZE(rdc321x_wdt_resource),
.platform_data = &rdc321x_wdt_pdata,
.pdata_size = sizeof(rdc321x_wdt_pdata),
}, {
.name = "rdc321x-gpio",
.resources = rdc321x_gpio_resources,
.num_resources = ARRAY_SIZE(rdc321x_gpio_resources),
.platform_data = &rdc321x_gpio_pdata,
.pdata_size = sizeof(rdc321x_gpio_pdata),
},
};
static int __devinit rdc321x_sb_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
int err;
err = pci_enable_device(pdev);
if (err) {
dev_err(&pdev->dev, "failed to enable device\n");
return err;
}
rdc321x_gpio_pdata.sb_pdev = pdev;
rdc321x_wdt_pdata.sb_pdev = pdev;
return mfd_add_devices(&pdev->dev, -1,
rdc321x_sb_cells, ARRAY_SIZE(rdc321x_sb_cells), NULL, 0);
}
static void __devexit rdc321x_sb_remove(struct pci_dev *pdev)
{
mfd_remove_devices(&pdev->dev);
}
static DEFINE_PCI_DEVICE_TABLE(rdc321x_sb_table) = {
{ PCI_DEVICE(PCI_VENDOR_ID_RDC, PCI_DEVICE_ID_RDC_R6030) },
{}
};
MODULE_DEVICE_TABLE(pci, rdc321x_sb_table);
static struct pci_driver rdc321x_sb_driver = {
.name = "RDC321x Southbridge",
.id_table = rdc321x_sb_table,
.probe = rdc321x_sb_probe,
.remove = __devexit_p(rdc321x_sb_remove),
};
static int __init rdc321x_sb_init(void)
{
return pci_register_driver(&rdc321x_sb_driver);
}
static void __exit rdc321x_sb_exit(void)
{
pci_unregister_driver(&rdc321x_sb_driver);
}
module_init(rdc321x_sb_init);
module_exit(rdc321x_sb_exit);
MODULE_AUTHOR("Florian Fainelli <florian@openwrt.org>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RDC R-321x MFD southbridge driver");
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