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[66.131.184.68]) by smtp.gmail.com with ESMTPSA id t6sm13790761qti.2.2021.02.16.12.11.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Feb 2021 12:11:29 -0800 (PST) From: Jonathan Marek To: linux-arm-msm@vger.kernel.org Cc: Viresh Kumar , Nishanth Menon , Stephen Boyd , linux-pm@vger.kernel.org (open list:OPERATING PERFORMANCE POINTS (OPP)), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] opp: fix dev_pm_opp_set_rate for different frequency at the same opp level Date: Tue, 16 Feb 2021 15:10:29 -0500 Message-Id: <20210216201030.19152-1-jonathan@marek.ca> X-Mailer: git-send-email 2.26.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org There is not "nothing to do" when the opp is the same. The frequency can be different from opp->rate. Fixes: 81c4d8a3c414 ("opp: Keep track of currently programmed OPP") Signed-off-by: Jonathan Marek --- drivers/opp/core.c | 7 +++++-- drivers/opp/opp.h | 1 + 2 files changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/opp/core.c b/drivers/opp/core.c index c3f3d9249cc5..f82cf72f433e 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -986,6 +986,7 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, struct dev_pm_opp *opp, unsigned long freq) { struct dev_pm_opp *old_opp; + unsigned long old_freq; int scaling_down, ret; if (unlikely(!opp)) @@ -996,15 +997,16 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, _find_current_opp(dev, opp_table); old_opp = opp_table->current_opp; + old_freq = opp_table->current_freq; /* Return early if nothing to do */ - if (opp_table->enabled && old_opp == opp) { + if (opp_table->enabled && old_opp == opp && old_freq == freq) { dev_dbg(dev, "%s: OPPs are same, nothing to do\n", __func__); return 0; } dev_dbg(dev, "%s: switching OPP: Freq %lu -> %lu Hz, Level %u -> %u, Bw %u -> %u\n", - __func__, old_opp->rate, freq, old_opp->level, opp->level, + __func__, old_freq, freq, old_opp->level, opp->level, old_opp->bandwidth ? old_opp->bandwidth[0].peak : 0, opp->bandwidth ? opp->bandwidth[0].peak : 0); @@ -1061,6 +1063,7 @@ static int _set_opp(struct device *dev, struct opp_table *opp_table, /* Make sure current_opp doesn't get freed */ dev_pm_opp_get(opp); opp_table->current_opp = opp; + opp_table->current_freq = freq; return ret; } diff --git a/drivers/opp/opp.h b/drivers/opp/opp.h index 9b9daf83b074..9f1d9c877380 100644 --- a/drivers/opp/opp.h +++ b/drivers/opp/opp.h @@ -186,6 +186,7 @@ struct opp_table { enum opp_table_access shared_opp; struct dev_pm_opp *current_opp; struct dev_pm_opp *suspend_opp; + unsigned long current_freq; struct mutex genpd_virt_dev_lock; struct device **genpd_virt_devs;