user/sven/linux.git/include/linux/hw_random.h, branch v4.4.190

hwrng: add devm_* interfaces

2015-03-16T10:45:54Z

This change adds devm_hwrng_register and devm_hwrng_unregister which use can simplify error unwinding and unbinding code paths in device drivers. Signed-off-by: Dmitry Torokhov Signed-off-by: Herbert Xu

hwrng: core - Use struct completion for cleanup_done

2014-12-25T21:33:34Z

There is no point in doing a manual completion for cleanup_done when struct completion fits in perfectly. Signed-off-by: Herbert Xu

hwrng: fix unregister race.

2014-12-22T12:02:40Z

The previous patch added one potential problem: we can still be reading from a hwrng when it's unregistered. Add a wait for zero in the hwrng_unregister path. Signed-off-by: Rusty Russell Signed-off-by: Amos Kong Signed-off-by: Herbert Xu

hwrng: use reference counts on each struct hwrng.

2014-12-22T12:02:39Z

current_rng holds one reference, and we bump it every time we want to do a read from it. This means we only hold the rng_mutex to grab or drop a reference, so accessing /sys/devices/virtual/misc/hw_random/rng_current doesn't block on read of /dev/hwrng. Using a kref is overkill (we're always under the rng_mutex), but a standard pattern. This also solves the problem that the hwrng_fillfn thread was accessing current_rng without a lock, which could change (eg. to NULL) underneath it. Signed-off-by: Rusty Russell Signed-off-by: Amos Kong Signed-off-by: Herbert Xu

hwrng: add per-device entropy derating

2014-07-15T08:49:40Z

This patch introduces a derating factor to struct hwrng for the random bits going into the kernel input pool, and a common default derating for drivers which do not specify one. Signed-off-by: Torsten Duwe Signed-off-by: Theodore Ts'o Acked-by: H. Peter Anvin

random: add_hwgenerator_randomness() for feeding entropy from devices

2014-07-15T08:49:40Z

This patch adds an interface to the random pool for feeding entropy in-kernel. Signed-off-by: Torsten Duwe Signed-off-by: Theodore Ts'o Acked-by: H. Peter Anvin

hwrng: fix spelling mistake in header comment

2011-05-25T12:15:12Z

Cc: Herbert Xu Cc: Matt Mackall Signed-off-by: Sasha Levin Signed-off-by: Jiri Kosina

hwrng: core - Replace u32 in driver API with byte array

2009-12-01T06:47:32Z

This patch implements a new method by which hw_random hardware drivers can pass data to the core more efficiently, using a shared buffer. The old methods have been retained as a compatability layer until all the drivers have been updated. Signed-off-by: Ian Molton Acked-by: Matt Mackall Acked-by: Rusty Russell Signed-off-by: Herbert Xu

Remove "#ifdef KERNEL" checks from unexported headers

2008-04-30T15:29:54Z

Remove the "#ifdef __KERNEL__" tests from unexported header files in linux/include whose entire contents are wrapped in that preprocessor test. Signed-off-by: Robert P. J. Day Cc: David Woodhouse Cc: Sam Ravnborg Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

PM: Remove destroy_suspended_device()

2008-04-20T02:10:28Z

After 2.6.24 there was a plan to make the PM core acquire all device semaphores during a suspend/hibernation to protect itself from concurrent operations involving device objects. That proved to be too heavy-handed and we found a better way to achieve the goal, but before it happened, we had introduced the functions device_pm_schedule_removal() and destroy_suspended_device() to allow drivers to "safely" destroy a suspended device and we had adapted some drivers to use them. Now that these functions are no longer necessary, it seems reasonable to remove them and modify their users to use the normal device unregistration instead. Signed-off-by: Rafael J. Wysocki Acked-by: Pavel Machek Signed-off-by: Greg Kroah-Hartman