[PATCH] memory: samsung: exynos5422-dmc: handle clk_set_parent() failure
From: Krzysztof Kozlowski <hidden>
Date: 2021-04-07 15:45:48
Also in:
linux-pm, linux-samsung-soc, lkml
Subsystem:
arm/samsung s3c, s5p and exynos arm architectures, dmc frequency driver for samsung exynos5422, memory controller drivers, the rest · Maintainers:
Krzysztof Kozlowski, Peter Griffin, Lukasz Luba, Linus Torvalds
clk_set_parent() can fail and ignoring such case could lead to invalid
clock setup for given frequency.
Addresses-Coverity: Unchecked return value
Fixes: 6e7674c3c6df ("memory: Add DMC driver for Exynos5422")
Signed-off-by: Krzysztof Kozlowski <redacted>
---
drivers/memory/samsung/exynos5422-dmc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/memory/samsung/exynos5422-dmc.c b/drivers/memory/samsung/exynos5422-dmc.c
index 56f6e65d40cd..9c8318923ed0 100644
--- a/drivers/memory/samsung/exynos5422-dmc.c
+++ b/drivers/memory/samsung/exynos5422-dmc.c@@ -1293,7 +1293,9 @@ static int exynos5_dmc_init_clks(struct exynos5_dmc *dmc) dmc->curr_volt = target_volt; - clk_set_parent(dmc->mout_mx_mspll_ccore, dmc->mout_spll); + ret = clk_set_parent(dmc->mout_mx_mspll_ccore, dmc->mout_spll); + if (ret) + return ret; clk_prepare_enable(dmc->fout_bpll); clk_prepare_enable(dmc->mout_bpll);
--
2.25.1
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