interconnect: qcom: rpm: drop bogus pm domain attach

Any power domain would already have been attached by the platform bus
code so drop the bogus power domain attach which always succeeds from
probe.

This effectively reverts commit 7de109c0 ("interconnect: icc-rpm:
Add support for bus power domain").

Fixes: 7de109c0 ("interconnect: icc-rpm: Add support for bus power domain")
Cc: Yassine Oudjana <y.oudjana@protonmail.com>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Tested-by: Konrad Dybcio <konrad.dybcio@linaro.org> # MSM8996 Sony Kagura
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230313084953.24088-3-johan+linaro@kernel.orgSigned-off-by: Georgi Djakov <djakov@kernel.org>

drivers/interconnect/qcom/icc-rpm.c

@@ -11,7 +11,6 @@
 #include <linux/of_device.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
-#include <linux/pm_domain.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
@@ -496,12 +495,6 @@ int qnoc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (desc->has_bus_pd) {
-		ret = dev_pm_domain_attach(dev, true);
-		if (ret)
-			return ret;
-	}
-
 	provider = &qp->provider;
 	provider->dev = dev;
 	provider->set = qcom_icc_set;

drivers/interconnect/qcom/icc-rpm.h

@@ -91,7 +91,6 @@ struct qcom_icc_desc {
 	size_t num_nodes;
 	const char * const *clocks;
 	size_t num_clocks;
-	bool has_bus_pd;
 	enum qcom_icc_type type;
 	const struct regmap_config *regmap_cfg;
 	unsigned int qos_offset;

drivers/interconnect/qcom/msm8996.c

@@ -1823,7 +1823,6 @@ static const struct qcom_icc_desc msm8996_a0noc = {
 	.num_nodes = ARRAY_SIZE(a0noc_nodes),
 	.clocks = bus_a0noc_clocks,
 	.num_clocks = ARRAY_SIZE(bus_a0noc_clocks),
-	.has_bus_pd = true,
 	.regmap_cfg = &msm8996_a0noc_regmap_config
 };