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Commit 647c86d0 authored by Fabio Porcedda's avatar Fabio Porcedda Committed by Greg Kroah-Hartman
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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: default avatarFabio Porcedda <fabio.porcedda@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 3db3c625

drivers/base/platform.c

+5 −1
Original line number Diff line number Diff line
@@ -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.

 */