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| author | Wolfram Sang <wsa@the-dreams.de> | 2014-10-28 17:40:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-06 15:16:02 -0800 |
| commit | c3b50dc219e1437e4dcb6a1639b004648dc29faa (patch) | |
| tree | fe43f3dc0559b9a4c4f835c88504fa157fdf2869 | |
| parent | 161d6981096f5700ff5a2618bc9337c157eb717a (diff) | |
| download | op-kernel-dev-c3b50dc219e1437e4dcb6a1639b004648dc29faa.zip op-kernel-dev-c3b50dc219e1437e4dcb6a1639b004648dc29faa.tar.gz | |
core: platform: let platform_driver_probe initialize module owner
Since commit 9447057eaff8 ("platform_device: use a macro instead of
platform_driver_register"), platform_driver_register() always overwrites
the .owner field of a platform_driver with THIS_MODULE. This breaks
platform_driver_probe() which uses it from within the platform core
instead of the module init. Fix it by using a similar #define construct
to obtain THIS_MODULE and pass it on later.
Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/base/platform.c | 11 | ||||
| -rw-r--r-- | include/linux/platform_device.h | 6 |
2 files changed, 10 insertions, 7 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index b2afc29..c87a633 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -580,9 +580,10 @@ void platform_driver_unregister(struct platform_driver *drv) EXPORT_SYMBOL_GPL(platform_driver_unregister); /** - * platform_driver_probe - register driver for non-hotpluggable device + * __platform_driver_probe - register driver for non-hotpluggable device * @drv: platform driver structure * @probe: the driver probe routine, probably from an __init section + * @module: module which will be the owner of the driver * * Use this instead of platform_driver_register() when you know the device * is not hotpluggable and has already been registered, and you want to @@ -598,8 +599,8 @@ EXPORT_SYMBOL_GPL(platform_driver_unregister); * Returns zero if the driver registered and bound to a device, else returns * a negative error code and with the driver not registered. */ -int __init_or_module platform_driver_probe(struct platform_driver *drv, - int (*probe)(struct platform_device *)) +int __init_or_module __platform_driver_probe(struct platform_driver *drv, + int (*probe)(struct platform_device *), struct module *module) { int retval, code; @@ -614,7 +615,7 @@ int __init_or_module platform_driver_probe(struct platform_driver *drv, /* temporary section violation during probe() */ drv->probe = probe; - retval = code = platform_driver_register(drv); + retval = code = __platform_driver_register(drv, module); /* * Fixup that section violation, being paranoid about code scanning @@ -633,7 +634,7 @@ int __init_or_module platform_driver_probe(struct platform_driver *drv, platform_driver_unregister(drv); return retval; } -EXPORT_SYMBOL_GPL(platform_driver_probe); +EXPORT_SYMBOL_GPL(__platform_driver_probe); /** * platform_create_bundle - register driver and create corresponding device diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 153d303..c8d95c6 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -197,8 +197,10 @@ extern void platform_driver_unregister(struct platform_driver *); /* non-hotpluggable platform devices may use this so that probe() and * its support may live in __init sections, conserving runtime memory. */ -extern int platform_driver_probe(struct platform_driver *driver, - int (*probe)(struct platform_device *)); +#define platform_driver_probe(drv, probe) \ + __platform_driver_probe(drv, probe, THIS_MODULE) +extern int __platform_driver_probe(struct platform_driver *driver, + int (*probe)(struct platform_device *), struct module *module); static inline void *platform_get_drvdata(const struct platform_device *pdev) { |
