[PATCH 0/2] hwrng: don't fetch data before device init
From: Amit Shah
Date: Wed Jul 02 2014 - 06:28:58 EST
Hi,
When booting a recent kernel under KVM with the virtio-rng device
enabled, the boot process was stalling. Bisect pointed to a commit
made during the 3.15 window to fetch randomness from newly-registered
devices in the hwrng core. The details are in the patches.
I considered a couple of approaches, but basing on the init() function
being registered, as is done in patch 1 here, seems like the best idea,
since quite a few drivers need to initialize their devices before data
is fetched off them.
Please review and apply if appropriate,
Amit Shah (2):
hwrng: don't fetch rng from sources without init
virtio: rng: introduce an init fn for hwrng core
drivers/char/hw_random/core.c | 8 +++++---
drivers/char/hw_random/virtio-rng.c | 11 +++++++++++
2 files changed, 16 insertions(+), 3 deletions(-)
--
1.9.3
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/