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authorDavid Brownell <dbrownell@users.sourceforge.net>2008-03-24 12:29:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-03-24 19:22:19 -0700
commit537878d2c988fa12bbfaec19ee060c7603a48230 (patch)
tree465e8f73b9330c32af8f6207a1c2aed61c5f8963 /drivers/char
parentcb622bbb69e41f2746aadf5d7d527e77597abe2e (diff)
downloadlinux-537878d2c988fa12bbfaec19ee060c7603a48230.tar.bz2
hw_random doc updates
Update documentation for the hw_random support to be current: - Documentation/hw_random.txt has been updated to reflect the current code: it's a framework now, a "core" with a small sysfs interface, that hardware-specific drivers plug in to. Text specific to Intel hardware is now at the end. - Kconfig now references the Documentation/hw_random.txt file and better explains what this really does. Both chunks of documentation now higlight the fact that the kernel entropy pool is maintained by "rngd", and this driver has nothing directly to do with that important task. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/Kconfig9
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index 6bbd4fa50f3b..8d6c2089d2a8 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -9,7 +9,14 @@ config HW_RANDOM
Hardware Random Number Generator Core infrastructure.
To compile this driver as a module, choose M here: the
- module will be called rng-core.
+ module will be called rng-core. This provides a device
+ that's usually called /dev/hw_random, and which exposes one
+ of possibly several hardware random number generators.
+
+ These hardware random number generators do not feed directly
+ into the kernel's random number generator. That is usually
+ handled by the "rngd" daemon. Documentation/hw_random.txt
+ has more information.
If unsure, say Y.