From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Viresh Kumar <vireshk@kernel.org>, Nishanth Menon <nm@ti.com>,
Stephen Boyd <sboyd@kernel.org>
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: [PATCH] opp: Allow dev_pm_opp_set_opp() to be called without opp
Date: Wed, 27 Jan 2021 20:04:26 -0800 [thread overview]
Message-ID: <20210128040426.953529-1-bjorn.andersson@linaro.org> (raw)
a6xx_gmu_stop() calls dev_pm_opp_set_opp() with NULL as opp in order to
drop its bandwidth request, which was valid with dev_pm_opp_set_bw().
But after the transition to dev_pm_opp_set_opp() this leads to a NULL
dereference before jumping into _set_opp(), which does disable the
vote as expected.
Fixes: a0d67b94e2ef ("opp: Implement dev_pm_opp_set_opp()")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
drivers/opp/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/opp/core.c b/drivers/opp/core.c
index 583bb1274df9..3ff05f40e443 100644
--- a/drivers/opp/core.c
+++ b/drivers/opp/core.c
@@ -1157,7 +1157,7 @@ int dev_pm_opp_set_opp(struct device *dev, struct dev_pm_opp *opp)
return PTR_ERR(opp_table);
}
- ret = _set_opp(dev, opp_table, opp, opp->rate);
+ ret = _set_opp(dev, opp_table, opp, opp ? opp->rate : 0);
dev_pm_opp_put_opp_table(opp_table);
return ret;
--
2.29.2
next reply other threads:[~2021-01-28 4:06 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-28 4:04 Bjorn Andersson [this message]
2021-01-28 4:21 ` [PATCH] opp: Allow dev_pm_opp_set_opp() to be called without opp Viresh Kumar
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