From: Marek Szyprowski <m.szyprowski@samsung.com>
To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org,
Lukasz Luba <lukasz.luba@arm.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-samsung-soc@vger.kernel.org,
Chanwoo Choi <cw00.choi@samsung.com>
Subject: [PATCH] memory: samsung: exynos5422-dmc: propagate error from exynos5_counters_get()
Date: Tue, 4 Aug 2020 08:12:10 +0200 [thread overview]
Message-ID: <20200804061210.5415-1-m.szyprowski@samsung.com> (raw)
In-Reply-To: CGME20200804061225eucas1p283c1e0dc404bc420a2184480fdfd2b0d@eucas1p2.samsung.com
exynos5_counters_get() might fail with -EPROBE_DEFER if the driver for
devfreq event counter is not yet probed. Propagate that error value to
the caller to ensure that the exynos5422-dmc driver will be probed again
when devfreq event contuner is available.
This fixes boot hang if both exynos5422-dmc and exynos-ppmu drivers are
compiled as modules.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
drivers/memory/samsung/exynos5422-dmc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index b9c7956e5031..639811a3eecb 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c
@@ -914,7 +914,7 @@ static int exynos5_dmc_get_status(struct device *dev,
} else {
ret = exynos5_counters_get(dmc, &load, &total);
if (ret < 0)
- return -EINVAL;
+ return ret;
/* To protect from overflow, divide by 1024 */
stat->busy_time = load >> 10;
--
2.17.1
next parent reply other threads:[~2020-08-04 6:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20200804061225eucas1p283c1e0dc404bc420a2184480fdfd2b0d@eucas1p2.samsung.com>
2020-08-04 6:12 ` Marek Szyprowski [this message]
2020-08-04 6:42 ` [PATCH] memory: samsung: exynos5422-dmc: propagate error from exynos5_counters_get() Krzysztof Kozlowski
2020-08-04 9:11 ` Lukasz Luba
2020-08-04 12:19 ` Marek Szyprowski
2020-08-04 12:38 ` Lukasz Luba
2020-08-17 12:07 ` Krzysztof Kozlowski
2020-08-17 12:27 ` Lukasz Luba
2020-08-24 7:44 ` Marek Szyprowski
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