soc: samsung: exynos-asv: handle reading revision register error

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If regmap_read() fails, the product_id local variable will contain
random value from the stack.  Do not try to parse such value and fail
the ASV driver probe.

Fixes: 5ea428595c ("soc: samsung: Add Exynos Adaptive Supply Voltage driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Pankaj Dubey <pankaj.dubey@samsung.com>
Link: https://lore.kernel.org/r/20201207190517.262051-3-krzk@kernel.org

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Krzysztof Kozlowski 2020-12-07 20:05:15 +01:00

parent 0458b88267

commit 4561560dfb

1 changed files with 7 additions and 1 deletions

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drivers/soc/samsung/exynos-asv.c

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