| Message ID | 20190311105857.30792-1-r.czerwinski@pengutronix.de (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Herbert Xu |
| Headers | show |
| Series | hwrng: omap - Set default quality | expand |
On Mon, Mar 11, 2019 at 11:58:57AM +0100, Rouven Czerwinski wrote: > Newer combinations of the glibc, kernel and openssh can result in long initial > startup times on OMAP devices: > > [ 6.671425] systemd-rc-once[102]: Creating ED25519 key; this may take some time ... > [ 142.652491] systemd-rc-once[102]: Creating ED25519 key; done. > > due to the blocking getrandom(2) system call: > > [ 142.610335] random: crng init done > > Set the quality level for the omap hwrng driver allowing the kernel to use the > hwrng as an entropy source at boot. > > Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> > --- > drivers/char/hw_random/omap-rng.c | 1 + > 1 file changed, 1 insertion(+) Patch applied. Thanks.
diff --git a/drivers/char/hw_random/omap-rng.c b/drivers/char/hw_random/omap-rng.c index b65ff6962899..e9b6ac61fb7f 100644 --- a/drivers/char/hw_random/omap-rng.c +++ b/drivers/char/hw_random/omap-rng.c @@ -443,6 +443,7 @@ static int omap_rng_probe(struct platform_device *pdev) priv->rng.read = omap_rng_do_read; priv->rng.init = omap_rng_init; priv->rng.cleanup = omap_rng_cleanup; + priv->rng.quality = 900; priv->rng.priv = (unsigned long)priv; platform_set_drvdata(pdev, priv);
Newer combinations of the glibc, kernel and openssh can result in long initial startup times on OMAP devices: [ 6.671425] systemd-rc-once[102]: Creating ED25519 key; this may take some time ... [ 142.652491] systemd-rc-once[102]: Creating ED25519 key; done. due to the blocking getrandom(2) system call: [ 142.610335] random: crng init done Set the quality level for the omap hwrng driver allowing the kernel to use the hwrng as an entropy source at boot. Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de> --- drivers/char/hw_random/omap-rng.c | 1 + 1 file changed, 1 insertion(+)