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authorMing Lei <tom.leiming@gmail.com>2009-02-06 23:40:12 +0800
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-24 16:38:25 -0700
commit7a192ec334cab9fafe3a8665a65af398b0e24730 (patch)
treeeea572863500f94d446cfded69835e188dba3447 /drivers/ide/au1xxx-ide.c
parent6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff)
downloadop-kernel-dev-7a192ec334cab9fafe3a8665a65af398b0e24730.zip
op-kernel-dev-7a192ec334cab9fafe3a8665a65af398b0e24730.tar.gz
platform driver: fix incorrect use of 'platform_bus_type' with 'struct device_driver'
This patch fixes the bug reported in http://bugzilla.kernel.org/show_bug.cgi?id=11681. "Lots of device drivers register a 'struct device_driver' with the '.bus' member set to '&platform_bus_type'. This is wrong, since the platform_bus functions expect the 'struct device_driver' to be wrapped up in a 'struct platform_driver' which provides some additional callbacks (like suspend_late, resume_early). The effect may be that platform_suspend_late() uses bogus data outside the device_driver struct as a pointer pointer to the device driver's suspend_late() function or other hard to reproduce failures."(Lothar Wassmann) Signed-off-by: Ming Lei <tom.leiming@gmail.com> Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/ide/au1xxx-ide.c')
-rw-r--r--drivers/ide/au1xxx-ide.c36
1 files changed, 18 insertions, 18 deletions
diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c
index 79a2dfe..154ec2c 100644
--- a/drivers/ide/au1xxx-ide.c
+++ b/drivers/ide/au1xxx-ide.c
@@ -536,9 +536,8 @@ static const struct ide_port_info au1xxx_port_info = {
#endif
};
-static int au_ide_probe(struct device *dev)
+static int au_ide_probe(struct platform_device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
_auide_hwif *ahwif = &auide_hwif;
struct resource *res;
struct ide_host *host;
@@ -552,23 +551,23 @@ static int au_ide_probe(struct device *dev)
#endif
memset(&auide_hwif, 0, sizeof(_auide_hwif));
- ahwif->irq = platform_get_irq(pdev, 0);
+ ahwif->irq = platform_get_irq(dev, 0);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (res == NULL) {
- pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id);
+ pr_debug("%s %d: no base address\n", DRV_NAME, dev->id);
ret = -ENODEV;
goto out;
}
if (ahwif->irq < 0) {
- pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id);
+ pr_debug("%s %d: no IRQ\n", DRV_NAME, dev->id);
ret = -ENODEV;
goto out;
}
if (!request_mem_region(res->start, res->end - res->start + 1,
- pdev->name)) {
+ dev->name)) {
pr_debug("%s: request_mem_region failed\n", DRV_NAME);
ret = -EBUSY;
goto out;
@@ -583,7 +582,7 @@ static int au_ide_probe(struct device *dev)
memset(&hw, 0, sizeof(hw));
auide_setup_ports(&hw, ahwif);
hw.irq = ahwif->irq;
- hw.dev = dev;
+ hw.dev = &dev->dev;
hw.chipset = ide_au1xxx;
ret = ide_host_add(&au1xxx_port_info, hws, &host);
@@ -592,7 +591,7 @@ static int au_ide_probe(struct device *dev)
auide_hwif.hwif = host->ports[0];
- dev_set_drvdata(dev, host);
+ platform_set_drvdata(dev, host);
printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode );
@@ -600,38 +599,39 @@ static int au_ide_probe(struct device *dev)
return ret;
}
-static int au_ide_remove(struct device *dev)
+static int au_ide_remove(struct platform_device *dev)
{
- struct platform_device *pdev = to_platform_device(dev);
struct resource *res;
- struct ide_host *host = dev_get_drvdata(dev);
+ struct ide_host *host = platform_get_drvdata(dev);
_auide_hwif *ahwif = &auide_hwif;
ide_host_remove(host);
iounmap((void *)ahwif->regbase);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ res = platform_get_resource(dev, IORESOURCE_MEM, 0);
release_mem_region(res->start, res->end - res->start + 1);
return 0;
}
-static struct device_driver au1200_ide_driver = {
- .name = "au1200-ide",
- .bus = &platform_bus_type,
+static struct platform_driver au1200_ide_driver = {
+ .driver = {
+ .name = "au1200-ide",
+ .owner = THIS_MODULE,
+ },
.probe = au_ide_probe,
.remove = au_ide_remove,
};
static int __init au_ide_init(void)
{
- return driver_register(&au1200_ide_driver);
+ return platform_driver_register(&au1200_ide_driver);
}
static void __exit au_ide_exit(void)
{
- driver_unregister(&au1200_ide_driver);
+ platform_driver_unregister(&au1200_ide_driver);
}
MODULE_LICENSE("GPL");
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