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soc: samsung: exynos-pmu: Fix uninitialized ret in tensor_set_bits_atomic()

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commit eca836dfd8 upstream.

If tensor_set_bits_atomic() is called with a mask of 0 the function will
just iterate over its bit, not perform any updates and return stack
value of 'ret'.

Also reported by smatch:

  drivers/soc/samsung/exynos-pmu.c:129 tensor_set_bits_atomic() error: uninitialized symbol 'ret'.

Fixes: 0b7c607502 ("soc: samsung: exynos-pmu: Add regmap support for SoCs that protect PMU regs")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250104135605.109209-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Krzysztof Kozlowski
2025-01-04 14:56:05 +01:00
committed by Greg Kroah-Hartman
parent 46607b0ab1
commit 8fd332aebd
1 changed files with 1 additions and 1 deletions
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drivers/soc/samsung/exynos-pmu.c
+1 -1
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@@ -126,7 +126,7 @@ static int tensor_set_bits_atomic(void *ctx, unsigned int offset, u32 val,
if (ret)
return ret;
}
return ret;
return 0;
}
static bool tensor_is_atomic(unsigned int reg)