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author | Ming Lei <tom.leiming@gmail.com> | 2009-02-06 15:40:12 (GMT) |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-24 23:38:25 (GMT) |
commit | 7a192ec334cab9fafe3a8665a65af398b0e24730 (patch) | |
tree | eea572863500f94d446cfded69835e188dba3447 /drivers/pcmcia/tcic.c | |
parent | 6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff) | |
download | linux-fsl-qoriq-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/tcic.c')
-rw-r--r-- | drivers/pcmcia/tcic.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/pcmcia/tcic.c b/drivers/pcmcia/tcic.c index 2a613e9..9ad97ea 100644 --- a/drivers/pcmcia/tcic.c +++ b/drivers/pcmcia/tcic.c @@ -363,13 +363,25 @@ static int __init get_tcic_id(void) return id; } +static int tcic_drv_pcmcia_suspend(struct platform_device *dev, + pm_message_t state) +{ + return pcmcia_socket_dev_suspend(&dev->dev, state); +} + +static int tcic_drv_pcmcia_resume(struct platform_device *dev) +{ + return pcmcia_socket_dev_resume(&dev->dev); +} /*====================================================================*/ -static struct device_driver tcic_driver = { - .name = "tcic-pcmcia", - .bus = &platform_bus_type, - .suspend = pcmcia_socket_dev_suspend, - .resume = pcmcia_socket_dev_resume, +static struct platform_driver tcic_driver = { + .driver = { + .name = "tcic-pcmcia", + .owner = THIS_MODULE, + }, + .suspend = tcic_drv_pcmcia_suspend, + .resume = tcic_drv_pcmcia_resume, }; static struct platform_device tcic_device = { @@ -383,7 +395,7 @@ static int __init init_tcic(void) int i, sock, ret = 0; u_int mask, scan; - if (driver_register(&tcic_driver)) + if (platform_driver_register(&tcic_driver)) return -1; printk(KERN_INFO "Databook TCIC-2 PCMCIA probe: "); @@ -391,7 +403,7 @@ static int __init init_tcic(void) if (!request_region(tcic_base, 16, "tcic-2")) { printk("could not allocate ports,\n "); - driver_unregister(&tcic_driver); + platform_driver_unregister(&tcic_driver); return -ENODEV; } else { @@ -414,7 +426,7 @@ static int __init init_tcic(void) if (sock == 0) { printk("not found.\n"); release_region(tcic_base, 16); - driver_unregister(&tcic_driver); + platform_driver_unregister(&tcic_driver); return -ENODEV; } @@ -542,7 +554,7 @@ static void __exit exit_tcic(void) } platform_device_unregister(&tcic_device); - driver_unregister(&tcic_driver); + platform_driver_unregister(&tcic_driver); } /* exit_tcic */ /*====================================================================*/ |