From: Daniel Lezcano <daniel.lezcano@linaro.org>
To: daniel.lezcano@linaro.org, rafael@kernel.org, m.szyprowski@samsung.com
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Amit Kucheria <amitk@kernel.org>, Zhang Rui <rui.zhang@intel.com>,
Alim Akhtar <alim.akhtar@samsung.com>,
linux-pm@vger.kernel.org (open list:SAMSUNG THERMAL DRIVER),
linux-samsung-soc@vger.kernel.org (open list:SAMSUNG THERMAL
DRIVER),
linux-arm-kernel@lists.infradead.org (moderated list:ARM/SAMSUNG
S3C, S5P AND EXYNOS ARM ARCHITECTURES),
linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] thermal/drivers/exynos: Fix NULL pointer dereference when getting the critical temp
Date: Mon, 3 Oct 2022 15:29:43 +0200 [thread overview]
Message-ID: <20221003132943.1383065-1-daniel.lezcano@linaro.org> (raw)
In-Reply-To: <4e4d873b-4a40-334a-34e7-defb0fcc4e6b@samsung.com>
The driver is assuming the get_critical temperature exists as it is
inherited by the thermal of ops. But this one has been removed in
favor of the generic one.
Use the generic thermal_zone_get_crit_temp() function instead
Fixes: 13bea86623b ("thermal/of: Remove of_thermal_get_crit_temp(")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
drivers/thermal/samsung/exynos_tmu.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 5a1ffe2f3134..37465af59262 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -264,9 +264,8 @@ static int exynos_tmu_initialize(struct platform_device *pdev)
unsigned int status;
int ret = 0, temp;
- if (data->soc != SOC_ARCH_EXYNOS5433) /* FIXME */
- ret = tzd->ops->get_crit_temp(tzd, &temp);
- if (ret) {
+ ret = thermal_zone_get_crit_temp(tzd, &temp);
+ if (ret && data->soc != SOC_ARCH_EXYNOS5433) { /* FIXME */
dev_err(&pdev->dev,
"No CRITICAL trip point defined in device tree!\n");
goto out;
--
2.34.1
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next prev parent reply other threads:[~2022-10-03 13:31 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20221003092704eucas1p2875c1f996dfd60a58f06cf986e02e8eb@eucas1p2.samsung.com>
[not found] ` <20221003092602.1323944-1-daniel.lezcano@linaro.org>
[not found] ` <CGME20221003093207eucas1p1d456288f35eadbc6fcda0bf24b58e678@eucas1p1.samsung.com>
[not found] ` <20221003092602.1323944-20-daniel.lezcano@linaro.org>
2022-10-03 12:50 ` [PATCH v8 19/29] thermal/of: Remove of_thermal_get_crit_temp() Marek Szyprowski
2022-10-03 13:29 ` Daniel Lezcano [this message]
2022-10-03 13:40 ` [PATCH] thermal/drivers/exynos: Fix NULL pointer dereference when getting the critical temp Krzysztof Kozlowski
2022-10-03 13:50 ` Marek Szyprowski
2022-10-17 13:48 ` Marek Szyprowski
2022-10-17 14:14 ` Daniel Lezcano
2022-10-03 13:31 ` [PATCH v8 19/29] thermal/of: Remove of_thermal_get_crit_temp() Daniel Lezcano
2022-10-03 14:10 ` [PATCH v8 00/29] Rework the trip points creation Marek Szyprowski
2022-10-03 15:36 ` Daniel Lezcano
2022-10-03 21:18 ` Daniel Lezcano
2022-10-05 12:37 ` Daniel Lezcano
2022-10-05 13:05 ` Marek Szyprowski
2022-10-06 6:55 ` Daniel Lezcano
2022-10-06 16:25 ` Marek Szyprowski
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