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| author | Ralph Wuerthner <rwuerthn@de.ibm.com> | 2008-04-17 09:46:14 +0400 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-04-17 09:47:02 +0400 |
| commit | 893f11286644780fc7d6d415e537644da7bdaaf8 (patch) | |
| tree | 600401989687c7f7815ed119d2420b9228dd7e8d /drivers/s390/crypto | |
| parent | c10fde0d9e2112c25052a8742e893ec5965c0007 (diff) | |
| download | linux-893f11286644780fc7d6d415e537644da7bdaaf8.tar.xz | |
[S390] hw_random: allow rng_dev_read() to return hardware errors.
The api for hardware random number generators is currently limited to
devices that never fail. If the hardware is registered as a source for
random numbers it has to work. This prevents the use of i/o based
random number devices where the i/o might fail.
Add a check for errors after the read from a hardware random number device.
This patch is required to support large random numbers retrieved
from the CEX2C cards on System z.
Signed-off-by: Ralph Wuerthner <rwuerthn@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'drivers/s390/crypto')
0 files changed, 0 insertions, 0 deletions