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authorMing Lei <tom.leiming@gmail.com>2009-02-06 18:40:12 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2009-03-25 02:38:25 +0300
commit7a192ec334cab9fafe3a8665a65af398b0e24730 (patch)
treeeea572863500f94d446cfded69835e188dba3447 /drivers/pcmcia/sa1100_generic.c
parent6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff)
downloadlinux-7a192ec334cab9fafe3a8665a65af398b0e24730.tar.xz
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/pcmcia/sa1100_generic.c')
-rw-r--r--drivers/pcmcia/sa1100_generic.c38
1 files changed, 28 insertions, 10 deletions
diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c
index c5b2a44b4c37..d8da5ac844e9 100644
--- a/drivers/pcmcia/sa1100_generic.c
+++ b/drivers/pcmcia/sa1100_generic.c
@@ -65,7 +65,7 @@ static int (*sa11x0_pcmcia_hw_init[])(struct device *dev) = {
#endif
};
-static int sa11x0_drv_pcmcia_probe(struct device *dev)
+static int sa11x0_drv_pcmcia_probe(struct platform_device *dev)
{
int i, ret = -ENODEV;
@@ -73,7 +73,7 @@ static int sa11x0_drv_pcmcia_probe(struct device *dev)
* Initialise any "on-board" PCMCIA sockets.
*/
for (i = 0; i < ARRAY_SIZE(sa11x0_pcmcia_hw_init); i++) {
- ret = sa11x0_pcmcia_hw_init[i](dev);
+ ret = sa11x0_pcmcia_hw_init[i](&dev->dev);
if (ret == 0)
break;
}
@@ -81,13 +81,31 @@ static int sa11x0_drv_pcmcia_probe(struct device *dev)
return ret;
}
-static struct device_driver sa11x0_pcmcia_driver = {
+static int sa11x0_drv_pcmcia_remove(struct platform_device *dev)
+{
+ return soc_common_drv_pcmcia_remove(&dev->dev);
+}
+
+static int sa11x0_drv_pcmcia_suspend(struct platform_device *dev,
+ pm_message_t state)
+{
+ return pcmcia_socket_dev_suspend(&dev->dev, state);
+}
+
+static int sa11x0_drv_pcmcia_resume(struct platform_device *dev)
+{
+ return pcmcia_socket_dev_resume(&dev->dev);
+}
+
+static struct platform_driver sa11x0_pcmcia_driver = {
+ .driver = {
+ .name = "sa11x0-pcmcia",
+ .owner = THIS_MODULE,
+ },
.probe = sa11x0_drv_pcmcia_probe,
- .remove = soc_common_drv_pcmcia_remove,
- .name = "sa11x0-pcmcia",
- .bus = &platform_bus_type,
- .suspend = pcmcia_socket_dev_suspend,
- .resume = pcmcia_socket_dev_resume,
+ .remove = sa11x0_drv_pcmcia_remove,
+ .suspend = sa11x0_drv_pcmcia_suspend,
+ .resume = sa11x0_drv_pcmcia_resume,
};
/* sa11x0_pcmcia_init()
@@ -100,7 +118,7 @@ static struct device_driver sa11x0_pcmcia_driver = {
*/
static int __init sa11x0_pcmcia_init(void)
{
- return driver_register(&sa11x0_pcmcia_driver);
+ return platform_driver_register(&sa11x0_pcmcia_driver);
}
/* sa11x0_pcmcia_exit()
@@ -110,7 +128,7 @@ static int __init sa11x0_pcmcia_init(void)
*/
static void __exit sa11x0_pcmcia_exit(void)
{
- driver_unregister(&sa11x0_pcmcia_driver);
+ platform_driver_unregister(&sa11x0_pcmcia_driver);
}
MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");