Re: [PATCH 07/23] interconnect: qcom: rpm: fix probe PM domain error handling

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Le 01/02/2023 à 11:15, Johan Hovold a écrit :
Make sure to disable clocks also in case attaching the power domain
fails.

Fixes: 7de109c0abe9 ("interconnect: icc-rpm: Add support for bus power domain")
Cc: stable-u79uwXL29TY76Z2rM5mHXA@xxxxxxxxxxxxxxxx      # 5.17
Cc: Yassine Oudjana <y.oudjana-g/b1ySJe57IN+BqQ9rBEUg@xxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro-DgEjT+Ai2ygdnm+yROfE0A@xxxxxxxxxxxxxxxx>
---
  drivers/interconnect/qcom/icc-rpm.c | 9 ++++-----
  1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/interconnect/qcom/icc-rpm.c b/drivers/interconnect/qcom/icc-rpm.c
index 91778cfcbc65..da595059cafd 100644
--- a/drivers/interconnect/qcom/icc-rpm.c
+++ b/drivers/interconnect/qcom/icc-rpm.c
@@ -498,8 +498,7 @@ int qnoc_probe(struct platform_device *pdev)
if (desc->has_bus_pd) {
  		ret = dev_pm_domain_attach(dev, true);
-		if (ret)
-			return ret;
+		goto err_disable_clks;

Hi,
this change looks strange because we now skip the rest of the function.

Is it really intended?


Also, should dev_pm_domain_detach() be called somewhere in the error handling path and remove function ?

CJ


  	}
provider = &qp->provider;
@@ -514,8 +513,7 @@ int qnoc_probe(struct platform_device *pdev)
  	ret = icc_provider_add(provider);
  	if (ret) {
  		dev_err(dev, "error adding interconnect provider: %d\n", ret);
-		clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
-		return ret;
+		goto err_disable_clks;
  	}
for (i = 0; i < num_nodes; i++) {
@@ -550,8 +548,9 @@ int qnoc_probe(struct platform_device *pdev)
  	return 0;
  err:
  	icc_nodes_remove(provider);
-	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
  	icc_provider_del(provider);
+err_disable_clks:
+	clk_bulk_disable_unprepare(qp->num_clks, qp->bus_clks);
return ret;
  }




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