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From 5e64ac43e844e9915bc8acd6eb19bca4e0451a4d Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Fri, 20 Jan 2023 10:20:31 +0100
Subject: clk: mediatek: mt8192: Correctly unregister and free clocks on
failure
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
[ Upstream commit 0cbe12694990501be92f997d987925132002dbe5 ]
If anything fails during probe of the clock controller(s), unregister
(and kfree!) whatever we have previously registered to leave with a
clean state and prevent leaks.
Fixes: 710573dee31b ("clk: mediatek: Add MT8192 basic clocks support")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Tested-by: Miles Chen <miles.chen@mediatek.com>
Link: https://lore.kernel.org/r/20230120092053.182923-2-angelogioacchino.delregno@collabora.com
Tested-by: Mingming Su <mingming.su@mediatek.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stable-dep-of: 2f7b1d8b5505 ("clk: mediatek: Do a runtime PM get on controllers during probe")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/clk/mediatek/clk-mt8192.c | 77 ++++++++++++++++++++++++-------
1 file changed, 60 insertions(+), 17 deletions(-)
diff --git a/drivers/clk/mediatek/clk-mt8192.c b/drivers/clk/mediatek/clk-mt8192.c
index d0f2269310706..74bd8bac94a35 100644
--- a/drivers/clk/mediatek/clk-mt8192.c
+++ b/drivers/clk/mediatek/clk-mt8192.c
@@ -1100,27 +1100,64 @@ static int clk_mt8192_top_probe(struct platform_device *pdev)
if (IS_ERR(base))
return PTR_ERR(base);
- mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks), top_clk_data);
- mtk_clk_register_factors(top_early_divs, ARRAY_SIZE(top_early_divs), top_clk_data);
- mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data);
- mtk_clk_register_muxes(top_mtk_muxes, ARRAY_SIZE(top_mtk_muxes), node, &mt8192_clk_lock,
- top_clk_data);
- mtk_clk_register_composites(top_muxes, ARRAY_SIZE(top_muxes), base, &mt8192_clk_lock,
- top_clk_data);
- mtk_clk_register_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), base, &mt8192_clk_lock,
- top_clk_data);
- r = mtk_clk_register_gates(node, top_clks, ARRAY_SIZE(top_clks), top_clk_data);
+ r = mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks), top_clk_data);
if (r)
return r;
+ r = mtk_clk_register_factors(top_early_divs, ARRAY_SIZE(top_early_divs), top_clk_data);
+ if (r)
+ goto unregister_fixed_clks;
+
+ r = mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data);
+ if (r)
+ goto unregister_early_factors;
+
+ r = mtk_clk_register_muxes(top_mtk_muxes, ARRAY_SIZE(top_mtk_muxes), node,
+ &mt8192_clk_lock, top_clk_data);
+ if (r)
+ goto unregister_factors;
+
+ r = mtk_clk_register_composites(top_muxes, ARRAY_SIZE(top_muxes), base,
+ &mt8192_clk_lock, top_clk_data);
+ if (r)
+ goto unregister_muxes;
+
+ r = mtk_clk_register_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), base,
+ &mt8192_clk_lock, top_clk_data);
+ if (r)
+ goto unregister_top_composites;
+
+ r = mtk_clk_register_gates(node, top_clks, ARRAY_SIZE(top_clks), top_clk_data);
+ if (r)
+ goto unregister_adj_divs_composites;
+
r = clk_mt8192_reg_mfg_mux_notifier(&pdev->dev,
top_clk_data->hws[CLK_TOP_MFG_PLL_SEL]->clk);
if (r)
- return r;
-
+ goto unregister_gates;
- return of_clk_add_hw_provider(node, of_clk_hw_onecell_get,
+ r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, top_clk_data);
+ if (r)
+ goto unregister_gates;
+
+ return 0;
+
+unregister_gates:
+ mtk_clk_unregister_gates(top_clks, ARRAY_SIZE(top_clks), top_clk_data);
+unregister_adj_divs_composites:
+ mtk_clk_unregister_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), top_clk_data);
+unregister_top_composites:
+ mtk_clk_unregister_composites(top_muxes, ARRAY_SIZE(top_muxes), top_clk_data);
+unregister_muxes:
+ mtk_clk_unregister_muxes(top_mtk_muxes, ARRAY_SIZE(top_mtk_muxes), top_clk_data);
+unregister_factors:
+ mtk_clk_unregister_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data);
+unregister_early_factors:
+ mtk_clk_unregister_factors(top_early_divs, ARRAY_SIZE(top_early_divs), top_clk_data);
+unregister_fixed_clks:
+ mtk_clk_unregister_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
top_clk_data);
+ return r;
}
static int clk_mt8192_infra_probe(struct platform_device *pdev)
@@ -1139,14 +1176,16 @@ static int clk_mt8192_infra_probe(struct platform_device *pdev)
r = mtk_register_reset_controller_with_dev(&pdev->dev, &clk_rst_desc);
if (r)
- goto free_clk_data;
+ goto unregister_gates;
r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
if (r)
- goto free_clk_data;
+ goto unregister_gates;
return r;
+unregister_gates:
+ mtk_clk_unregister_gates(infra_clks, ARRAY_SIZE(infra_clks), clk_data);
free_clk_data:
mtk_free_clk_data(clk_data);
return r;
@@ -1168,10 +1207,12 @@ static int clk_mt8192_peri_probe(struct platform_device *pdev)
r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
if (r)
- goto free_clk_data;
+ goto unregister_gates;
return r;
+unregister_gates:
+ mtk_clk_unregister_gates(peri_clks, ARRAY_SIZE(peri_clks), clk_data);
free_clk_data:
mtk_free_clk_data(clk_data);
return r;
@@ -1194,10 +1235,12 @@ static int clk_mt8192_apmixed_probe(struct platform_device *pdev)
r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
if (r)
- goto free_clk_data;
+ goto unregister_gates;
return r;
+unregister_gates:
+ mtk_clk_unregister_gates(apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
free_clk_data:
mtk_free_clk_data(clk_data);
return r;
--
2.43.0
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