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| author | Fabio Porcedda <fabio.porcedda@gmail.com> | 2013-03-26 10:35:15 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-29 17:10:55 +0100 |
| commit | 647c86d0a2d1131dd9412361958d8e0aae949523 (patch) | |
| tree | 46c8f627447e39eefc6ac425309926691eb4e6dd /drivers/base | |
| parent | sysfs: use atomic_inc_unless_negative in sysfs_get_active (diff) | |
| download | linux-647c86d0a2d1131dd9412361958d8e0aae949523.tar.xz linux-647c86d0a2d1131dd9412361958d8e0aae949523.zip | |
driver core: warn that platform_driver_probe can not use deferred probing
Add documentation that platform_driver_probe() is incompatible with
deferred probing.
Signed-off-by: Fabio Porcedda <fabio.porcedda@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/platform.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c index c0b8df38402b..ef2afb1e33e6 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -555,7 +555,8 @@ EXPORT_SYMBOL_GPL(platform_driver_unregister); /** * platform_driver_probe - register driver for non-hotpluggable device * @drv: platform driver structure - * @probe: the driver probe routine, probably from an __init section + * @probe: the driver probe routine, probably from an __init section, + * must not return -EPROBE_DEFER. * * Use this instead of platform_driver_register() when you know the device * is not hotpluggable and has already been registered, and you want to @@ -566,6 +567,9 @@ EXPORT_SYMBOL_GPL(platform_driver_unregister); * into system-on-chip processors, where the controller devices have been * configured as part of board setup. * + * This is incompatible with deferred probing so probe() must not + * return -EPROBE_DEFER. + * * Returns zero if the driver registered and bound to a device, else returns * a negative error code and with the driver not registered. */ |