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| author |   Michael Ellerman <michael@ellerman.id.au> | 2013-10-11 14:07:58 +1100 |
|---|---|---|
| committer |   Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2013-10-11 16:50:20 +1100 |
| commit | 66548e40583b1470300341c6784fdc5176f7609f (patch) | |
| tree | f8025f7e31ea5eab9db246107cba82651bd0eb36 /arch/powerpc/kernel/rtas_pci.c | |
| parent | powerpc: Implement arch_get_random_long/int() for powernv (diff) | |
| download | linux-rng-66548e40583b1470300341c6784fdc5176f7609f.tar.xz linux-rng-66548e40583b1470300341c6784fdc5176f7609f.zip | |
hwrng: Add a driver for the hwrng found in power7+ systems
Add a driver for the hwrng found in power7+ systems, based on the
existing code for the arch_get_random_long() hook.
We only register a single instance of the driver, not one per device,
because we use the existing per_cpu array of devices in the arch code.
This means we always read from the "closest" device, avoiding inter-chip
memory traffic.
Signed-off-by: Guo Chao <yan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/rtas_pci.c')
0 files changed, 0 insertions, 0 deletions