From: Christian Marangi <ansuelsmth@gmail.com>
To: Chanwoo Choi <cw00.choi@samsung.com>,
MyungJoo Ham <myungjoo.ham@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Alim Akhtar <alim.akhtar@samsung.com>,
Christian Marangi <ansuelsmth@gmail.com>,
linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>, stable@vger.kernel.org
Subject: [PATCH] PM / devfreq: fix exynos-bus NULL pointer dereference
Date: Fri, 1 Jul 2022 13:58:59 +0200 [thread overview]
Message-ID: <20220701115859.23975-1-ansuelsmth@gmail.com> (raw)
Fix exynos-bus NULL pointer dereference by correctly using the local
generated freq_table to output the debug values instead of using the
profile freq_table that is not used in the driver.
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: b5d281f6c16d ("PM / devfreq: Rework freq_table to be local to devfreq struct")
Cc: stable@vger.kernel.org
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
---
drivers/devfreq/exynos-bus.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index b5615e667e31..79725bbb4bb0 100644
--- a/drivers/devfreq/exynos-bus.c
+++ b/drivers/devfreq/exynos-bus.c
@@ -447,9 +447,9 @@ static int exynos_bus_probe(struct platform_device *pdev)
}
}
- max_state = bus->devfreq->profile->max_state;
- min_freq = (bus->devfreq->profile->freq_table[0] / 1000);
- max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000);
+ max_state = bus->devfreq->max_state;
+ min_freq = (bus->devfreq->freq_table[0] / 1000);
+ max_freq = (bus->devfreq->freq_table[max_state - 1] / 1000);
pr_info("exynos-bus: new bus device registered: %s (%6ld KHz ~ %6ld KHz)\n",
dev_name(dev), min_freq, max_freq);
--
2.36.1
next reply other threads:[~2022-07-01 11:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-01 11:58 Christian Marangi [this message]
2022-07-01 13:33 ` [PATCH] PM / devfreq: fix exynos-bus NULL pointer dereference Chanwoo Choi
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