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author | Ming Lei <tom.leiming@gmail.com> | 2009-02-06 23:40:12 +0800 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-24 16:38:25 -0700 |
commit | 7a192ec334cab9fafe3a8665a65af398b0e24730 (patch) | |
tree | eea572863500f94d446cfded69835e188dba3447 /drivers/pcmcia/au1000_generic.c | |
parent | 6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff) | |
download | kernel_goldelico_gta04-7a192ec334cab9fafe3a8665a65af398b0e24730.zip kernel_goldelico_gta04-7a192ec334cab9fafe3a8665a65af398b0e24730.tar.gz kernel_goldelico_gta04-7a192ec334cab9fafe3a8665a65af398b0e24730.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/au1000_generic.c')
-rw-r--r-- | drivers/pcmcia/au1000_generic.c | 37 |
1 files changed, 24 insertions, 13 deletions
diff --git a/drivers/pcmcia/au1000_generic.c b/drivers/pcmcia/au1000_generic.c index fc1de46..9001334 100644 --- a/drivers/pcmcia/au1000_generic.c +++ b/drivers/pcmcia/au1000_generic.c @@ -468,13 +468,13 @@ out: return ret; } -int au1x00_drv_pcmcia_remove(struct device *dev) +int au1x00_drv_pcmcia_remove(struct platform_device *dev) { - struct skt_dev_info *sinfo = dev_get_drvdata(dev); + struct skt_dev_info *sinfo = platform_get_drvdata(dev); int i; mutex_lock(&pcmcia_sockets_lock); - dev_set_drvdata(dev, NULL); + platform_set_drvdata(dev, NULL); for (i = 0; i < sinfo->nskt; i++) { struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i); @@ -498,13 +498,13 @@ int au1x00_drv_pcmcia_remove(struct device *dev) * PCMCIA "Driver" API */ -static int au1x00_drv_pcmcia_probe(struct device *dev) +static int au1x00_drv_pcmcia_probe(struct platform_device *dev) { int i, ret = -ENODEV; mutex_lock(&pcmcia_sockets_lock); for (i=0; i < ARRAY_SIZE(au1x00_pcmcia_hw_init); i++) { - ret = au1x00_pcmcia_hw_init[i](dev); + ret = au1x00_pcmcia_hw_init[i](&dev->dev); if (ret == 0) break; } @@ -512,14 +512,26 @@ static int au1x00_drv_pcmcia_probe(struct device *dev) return ret; } +static int au1x00_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int au1x00_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} -static struct device_driver au1x00_pcmcia_driver = { +static struct platform_driver au1x00_pcmcia_driver = { + .driver = { + .name = "au1x00-pcmcia", + .owner = THIS_MODULE, + }, .probe = au1x00_drv_pcmcia_probe, .remove = au1x00_drv_pcmcia_remove, - .name = "au1x00-pcmcia", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, + .suspend = au1x00_drv_pcmcia_suspend, + .resume = au1x00_drv_pcmcia_resume, }; @@ -533,8 +545,7 @@ static struct device_driver au1x00_pcmcia_driver = { static int __init au1x00_pcmcia_init(void) { int error = 0; - if ((error = driver_register(&au1x00_pcmcia_driver))) - return error; + error = platform_driver_register(&au1x00_pcmcia_driver); return error; } @@ -544,7 +555,7 @@ static int __init au1x00_pcmcia_init(void) */ static void __exit au1x00_pcmcia_exit(void) { - driver_unregister(&au1x00_pcmcia_driver); + platform_driver_unregister(&au1x00_pcmcia_driver); } module_init(au1x00_pcmcia_init); |