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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/mtd/onenand
parent6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff)
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/mtd/onenand')
-rw-r--r--drivers/mtd/onenand/generic.c26
1 files changed, 13 insertions, 13 deletions
diff --git a/drivers/mtd/onenand/generic.c b/drivers/mtd/onenand/generic.c
index 5b69e7773c6c..3a496c33fb52 100644
--- a/drivers/mtd/onenand/generic.c
+++ b/drivers/mtd/onenand/generic.c
@@ -36,10 +36,9 @@ struct onenand_info {
struct onenand_chip onenand;
};
-static int __devinit generic_onenand_probe(struct device *dev)
+static int __devinit generic_onenand_probe(struct platform_device *pdev)
{
struct onenand_info *info;
- struct platform_device *pdev = to_platform_device(dev);
struct flash_platform_data *pdata = pdev->dev.platform_data;
struct resource *res = pdev->resource;
unsigned long size = res->end - res->start + 1;
@@ -49,7 +48,7 @@ static int __devinit generic_onenand_probe(struct device *dev)
if (!info)
return -ENOMEM;
- if (!request_mem_region(res->start, size, dev->driver->name)) {
+ if (!request_mem_region(res->start, size, pdev->dev.driver->name)) {
err = -EBUSY;
goto out_free_info;
}
@@ -82,7 +81,7 @@ static int __devinit generic_onenand_probe(struct device *dev)
#endif
err = add_mtd_device(&info->mtd);
- dev_set_drvdata(&pdev->dev, info);
+ platform_set_drvdata(pdev, info);
return 0;
@@ -96,14 +95,13 @@ out_free_info:
return err;
}
-static int __devexit generic_onenand_remove(struct device *dev)
+static int __devexit generic_onenand_remove(struct platform_device *pdev)
{
- struct platform_device *pdev = to_platform_device(dev);
- struct onenand_info *info = dev_get_drvdata(&pdev->dev);
+ struct onenand_info *info = platform_get_drvdata(pdev);
struct resource *res = pdev->resource;
unsigned long size = res->end - res->start + 1;
- dev_set_drvdata(&pdev->dev, NULL);
+ platform_set_drvdata(pdev, NULL);
if (info) {
if (info->parts)
@@ -120,9 +118,11 @@ static int __devexit generic_onenand_remove(struct device *dev)
return 0;
}
-static struct device_driver generic_onenand_driver = {
- .name = DRIVER_NAME,
- .bus = &platform_bus_type,
+static struct platform_driver generic_onenand_driver = {
+ .driver = {
+ .name = DRIVER_NAME,
+ .owner = THIS_MODULE,
+ },
.probe = generic_onenand_probe,
.remove = __devexit_p(generic_onenand_remove),
};
@@ -131,12 +131,12 @@ MODULE_ALIAS(DRIVER_NAME);
static int __init generic_onenand_init(void)
{
- return driver_register(&generic_onenand_driver);
+ return platform_driver_register(&generic_onenand_driver);
}
static void __exit generic_onenand_exit(void)
{
- driver_unregister(&generic_onenand_driver);
+ platform_driver_unregister(&generic_onenand_driver);
}
module_init(generic_onenand_init);