virtio-rng: fixes for device registration/unregistration

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There are several fixes in this patch (mostly because it's hard
splitting them up):

 - Revert the name field in struct hwrng back to 'const'. Also, don't
do an extra kmalloc for the name - just wasteful.
 - Deal with allocation failures properly.
 - Use IDA to allocate device number instead of brute forcing one.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

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This commit is contained in:

Sasha Levin 2014-05-16 11:42:43 +09:30 • committed by Rusty Russell

parent e5d23a8cc3

commit a17597d3b4

2 changed files with 24 additions and 19 deletions

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41

drivers/char/hw_random/virtio-rng.c

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2

include/linux/hw_random.h

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