clk: tegra: dfll: Fix drvdata overwriting issue

Both tegra124-dfll and clk-dfll are using platform_set_drvdata
to set drvdata of the exact same pdev while they use different
pointers for the drvdata. Once the drvdata has been overwritten
by tegra124-dfll, clk-dfll will never get its td pointer as it
expects.

Since tegra124-dfll merely needs its soc pointer in its remove
function, this patch fixes the bug by removing the overwriting
in the tegra124-dfll file and letting the tegra_dfll_unregister
return an soc pointer for it.

Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 5 insertions, 7 deletions

diff --git a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
index ad1c1cc829cb..269d3595758b 100644
--- a/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
+++ b/drivers/clk/tegra/clk-tegra124-dfll-fcpu.c
@@ -125,19 +125,17 @@ static int tegra124_dfll_fcpu_probe(struct platform_device *pdev)
 		return err;
 	}
 
-	platform_set_drvdata(pdev, soc);
-
 	return 0;
 }
 
 static int tegra124_dfll_fcpu_remove(struct platform_device *pdev)
 {
-	struct tegra_dfll_soc_data *soc = platform_get_drvdata(pdev);
-	int err;
+	struct tegra_dfll_soc_data *soc;
 
-	err = tegra_dfll_unregister(pdev);
-	if (err < 0)
-		dev_err(&pdev->dev, "failed to unregister DFLL: %d\n", err);
+	soc = tegra_dfll_unregister(pdev);
+	if (IS_ERR(soc))
+		dev_err(&pdev->dev, "failed to unregister DFLL: %ld\n",
+			PTR_ERR(soc));
 
 	tegra_cvb_remove_opp_table(soc->dev, soc->cvb, soc->max_freq);