lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 12 Oct 2021 08:51:44 +0530 From: Viresh Kumar <viresh.kumar@...aro.org> To: Hector Martin <marcan@...can.st> Cc: linux-arm-kernel@...ts.infradead.org, Alyssa Rosenzweig <alyssa@...enzweig.io>, Sven Peter <sven@...npeter.dev>, Marc Zyngier <maz@...nel.org>, Mark Kettenis <mark.kettenis@...all.nl>, Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>, Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>, Catalin Marinas <catalin.marinas@....com>, "Rafael J. Wysocki" <rafael@...nel.org>, Kevin Hilman <khilman@...nel.org>, Ulf Hansson <ulf.hansson@...aro.org>, linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [RFC PATCH 4/9] opp: core: Don't warn if required OPP device does not exist On 12-10-21, 01:57, Hector Martin wrote: > When required-opps is used in CPU OPP tables, there is no parent power > domain to drive it. Squelch this error, to allow a clock driver to > handle this directly instead. > > Signed-off-by: Hector Martin <marcan@...can.st> > --- > drivers/opp/core.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/opp/core.c b/drivers/opp/core.c > index 04b4691a8aac..89e616721f70 100644 > --- a/drivers/opp/core.c > +++ b/drivers/opp/core.c > @@ -873,12 +873,13 @@ static int _set_required_opp(struct device *dev, struct device *pd_dev, > return 0; > > ret = dev_pm_genpd_set_performance_state(pd_dev, pstate); > - if (ret) { > + if (ret && ret != -ENODEV) { > dev_err(dev, "Failed to set performance rate of %s: %d (%d)\n", > dev_name(pd_dev), pstate, ret); > + return ret; > } > > - return ret; > + return 0; > } > > /* This is only called for PM domain for now */ I am not sure why you need this, since _set_required_opps() has this check: if (unlikely(!required_opp_tables[0]->is_genpd)) { dev_err(dev, "required-opps don't belong to a genpd\n"); return -ENOENT; } -- viresh
Powered by blists - more mailing lists