On Fri, Oct 11, 2019 at 03:47:24PM +0200, Laurent Vivier wrote: > add_early_randomness() is called every time a new rng backend is added > and every time it is set as the current rng provider. > > add_early_randomness() is called from functions locking rng_mutex, > and if it hangs all the hw_random framework hangs: we can't read sysfs, > add or remove a backend. > > This patch moves add_early_randomness() out of the rng_mutex zone. > It only needs the reading_mutex. > > Signed-off-by: Laurent Vivier <lvivier@xxxxxxxxxx> > --- > > Notes: > v2: in hwrng_register, take rng->ref only if rng is the new current_rng > > drivers/char/hw_random/core.c | 61 +++++++++++++++++++++++++---------- > 1 file changed, 44 insertions(+), 17 deletions(-) Please rebase your patch on top of the cryptodev tree, i.e., make this an incremental patch with a Fixes header. Thanks, -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
