[PATCH 5.10 549/663] soc: samsung: exynos-asv: dont defer early on not-supported SoCs

[Greg Kroah-Hartman]

From: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>

commit 0458b88267c637fb872b0359da9ff0b243081e9e upstream.

Check if the SoC is really supported before gathering the needed
resources. This fixes endless deferred probe on some SoCs other than
Exynos5422 (like Exynos5410).

Fixes: 5ea428595cc5 ("soc: samsung: Add Exynos Adaptive Supply Voltage driver")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Reviewed-by: Pankaj Dubey <pankaj.dubey@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201207190517.262051-2-krzk@xxxxxxxxxx
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/soc/samsung/exynos-asv.c |   10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/drivers/soc/samsung/exynos-asv.c
+++ b/drivers/soc/samsung/exynos-asv.c
@@ -119,11 +119,6 @@ static int exynos_asv_probe(struct platf
 	u32 product_id = 0;
 	int ret, i;
 
-	cpu_dev = get_cpu_device(0);
-	ret = dev_pm_opp_get_opp_count(cpu_dev);
-	if (ret < 0)
-		return -EPROBE_DEFER;
-
 	asv = devm_kzalloc(&pdev->dev, sizeof(*asv), GFP_KERNEL);
 	if (!asv)
 		return -ENOMEM;
@@ -144,6 +139,11 @@ static int exynos_asv_probe(struct platf
 		return -ENODEV;
 	}
 
+	cpu_dev = get_cpu_device(0);
+	ret = dev_pm_opp_get_opp_count(cpu_dev);
+	if (ret < 0)
+		return -EPROBE_DEFER;
+
 	ret = of_property_read_u32(pdev->dev.of_node, "samsung,asv-bin",
 				   &asv->of_bin);
 	if (ret < 0)