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| author | Ming Lei <tom.leiming@gmail.com> | 2009-02-06 18:40:12 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-25 02:38:25 +0300 |
| commit | 7a192ec334cab9fafe3a8665a65af398b0e24730 (patch) | |
| tree | eea572863500f94d446cfded69835e188dba3447 /drivers/watchdog/rm9k_wdt.c | |
| parent | 6da2d377bba06c29d0bc41c8dee014164dec82a7 (diff) | |
| download | linux-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/watchdog/rm9k_wdt.c')
| -rw-r--r-- | drivers/watchdog/rm9k_wdt.c | 27 |
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/watchdog/rm9k_wdt.c b/drivers/watchdog/rm9k_wdt.c index f1ae3729a19e..cce1982a1b58 100644 --- a/drivers/watchdog/rm9k_wdt.c +++ b/drivers/watchdog/rm9k_wdt.c @@ -59,8 +59,8 @@ static long wdt_gpi_ioctl(struct file *, unsigned int, unsigned long); static int wdt_gpi_notify(struct notifier_block *, unsigned long, void *); static const struct resource *wdt_gpi_get_resource(struct platform_device *, const char *, unsigned int); -static int __init wdt_gpi_probe(struct device *); -static int __exit wdt_gpi_remove(struct device *); +static int __init wdt_gpi_probe(struct platform_device *); +static int __exit wdt_gpi_remove(struct platform_device *); static const char wdt_gpi_name[] = "wdt_gpi"; @@ -346,10 +346,9 @@ static const struct resource *wdt_gpi_get_resource(struct platform_device *pdv, } /* No hotplugging on the platform bus - use __init */ -static int __init wdt_gpi_probe(struct device *dev) +static int __init wdt_gpi_probe(struct platform_device *pdv) { int res; - struct platform_device * const pdv = to_platform_device(dev); const struct resource * const rr = wdt_gpi_get_resource(pdv, WDT_RESOURCE_REGS, IORESOURCE_MEM), @@ -374,7 +373,7 @@ static int __init wdt_gpi_probe(struct device *dev) return res; } -static int __exit wdt_gpi_remove(struct device *dev) +static int __exit wdt_gpi_remove(struct platform_device *dev) { int res; @@ -387,15 +386,13 @@ static int __exit wdt_gpi_remove(struct device *dev) /* Device driver init & exit */ -static struct device_driver wdt_gpi_driver = { - .name = (char *) wdt_gpi_name, - .bus = &platform_bus_type, - .owner = THIS_MODULE, +static struct platform_driver wgt_gpi_driver = { + .driver = { + .name = wdt_gpi_name, + .owner = THIS_MODULE, + }, .probe = wdt_gpi_probe, - .remove = __exit_p(wdt_gpi_remove), - .shutdown = NULL, - .suspend = NULL, - .resume = NULL, + .remove = __devexit_p(wdt_gpi_remove), }; static int __init wdt_gpi_init_module(void) @@ -403,12 +400,12 @@ static int __init wdt_gpi_init_module(void) atomic_set(&opencnt, 1); if (timeout > MAX_TIMEOUT_SECONDS) timeout = MAX_TIMEOUT_SECONDS; - return driver_register(&wdt_gpi_driver); + return platform_driver_register(&wdt_gpi_driver); } static void __exit wdt_gpi_cleanup_module(void) { - driver_unregister(&wdt_gpi_driver); + platform_driver_unregister(&wdt_gpi_driver); } module_init(wdt_gpi_init_module); |