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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/pcmcia/i82365.c
parent6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff)
downloadlinux-7a192ec334cab9fafe3a8665a65af398b0e24730.tar.bz2
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/i82365.c')
-rw-r--r--drivers/pcmcia/i82365.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/pcmcia/i82365.c b/drivers/pcmcia/i82365.c
index 71653ab84890..40d4953e4b12 100644
--- a/drivers/pcmcia/i82365.c
+++ b/drivers/pcmcia/i82365.c
@@ -1238,6 +1238,16 @@ static int pcic_init(struct pcmcia_socket *s)
return 0;
}
+static int i82365_drv_pcmcia_suspend(struct platform_device *dev,
+ pm_message_t state)
+{
+ return pcmcia_socket_dev_suspend(&dev->dev, state);
+}
+
+static int i82365_drv_pcmcia_resume(struct platform_device *dev)
+{
+ return pcmcia_socket_dev_resume(&dev->dev);
+}
static struct pccard_operations pcic_operations = {
.init = pcic_init,
.get_status = pcic_get_status,
@@ -1248,11 +1258,13 @@ static struct pccard_operations pcic_operations = {
/*====================================================================*/
-static struct device_driver i82365_driver = {
- .name = "i82365",
- .bus = &platform_bus_type,
- .suspend = pcmcia_socket_dev_suspend,
- .resume = pcmcia_socket_dev_resume,
+static struct platform_driver i82365_driver = {
+ .driver = {
+ .name = "i82365",
+ .owner = THIS_MODULE,
+ },
+ .suspend = i82365_drv_pcmcia_suspend,
+ .resume = i82365_drv_pcmcia_resume,
};
static struct platform_device *i82365_device;
@@ -1261,7 +1273,7 @@ static int __init init_i82365(void)
{
int i, ret;
- ret = driver_register(&i82365_driver);
+ ret = platform_driver_register(&i82365_driver);
if (ret)
goto err_out;
@@ -1337,7 +1349,7 @@ err_dev_unregister:
pnp_disable_dev(i82365_pnpdev);
#endif
err_driver_unregister:
- driver_unregister(&i82365_driver);
+ platform_driver_unregister(&i82365_driver);
err_out:
return ret;
} /* init_i82365 */
@@ -1365,7 +1377,7 @@ static void __exit exit_i82365(void)
if (i82365_pnpdev)
pnp_disable_dev(i82365_pnpdev);
#endif
- driver_unregister(&i82365_driver);
+ platform_driver_unregister(&i82365_driver);
} /* exit_i82365 */
module_init(init_i82365);