From 7a192ec334cab9fafe3a8665a65af398b0e24730 Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Fri, 6 Feb 2009 23:40:12 +0800 Subject: 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 Acked-by: Henrique de Moraes Holschuh Acked-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/pcmcia/sa1100_generic.c | 38 ++++++++++++++++++++++++++++---------- 1 file changed, 28 insertions(+), 10 deletions(-) (limited to 'drivers/pcmcia/sa1100_generic.c') diff --git a/drivers/pcmcia/sa1100_generic.c b/drivers/pcmcia/sa1100_generic.c index c5b2a44b4c3..d8da5ac844e 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 "); -- cgit v1.2.3-18-g5258