Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Chen-Yu Tsai <wenst@chromium.org>
To:     Stephen Boyd <sboyd@kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Matthias Brugger <matthias.bgg@gmail.com>
Cc:     Chen-Yu Tsai <wenst@chromium.org>,
        Chun-Jie Chen <chun-jie.chen@mediatek.com>,
        linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 29/31] clk: mediatek: mt8195: Implement error handling in probe functions
Date:   Sat, 22 Jan 2022 17:17:29 +0800
Message-Id: <20220122091731.283592-30-wenst@chromium.org>
In-Reply-To: <20220122091731.283592-1-wenst@chromium.org>
References: <20220122091731.283592-1-wenst@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Until now the mediatek clk driver library did not have any way to
unregister clks, and so all drivers did not do proper cleanup in
their error paths.

Now that the library does have APIs to unregister clks, use them
in the error path of the probe functions for the mt8195 clk drivers
to do proper cleanup.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
 drivers/clk/mediatek/clk-mt8195-apmixedsys.c | 13 ++++--
 drivers/clk/mediatek/clk-mt8195-apusys_pll.c | 11 ++++-
 drivers/clk/mediatek/clk-mt8195-topckgen.c   | 49 +++++++++++++++-----
 drivers/clk/mediatek/clk-mt8195-vdo0.c       |  4 +-
 drivers/clk/mediatek/clk-mt8195-vdo1.c       |  4 +-
 5 files changed, 63 insertions(+), 18 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt8195-apmixedsys.c b/drivers/clk/mediatek/clk-mt8195-apmixedsys.c
index 5b1b7dc447eb..af8d80f25f30 100644
--- a/drivers/clk/mediatek/clk-mt8195-apmixedsys.c
+++ b/drivers/clk/mediatek/clk-mt8195-apmixedsys.c
@@ -120,17 +120,24 @@ static int clk_mt8195_apmixed_probe(struct platform_device *pdev)
 	if (!clk_data)
 		return -ENOMEM;
 
-	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
-	r = mtk_clk_register_gates(node, apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
+	r = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
 	if (r)
 		goto free_apmixed_data;
 
+	r = mtk_clk_register_gates(node, apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
+	if (r)
+		goto unregister_plls;
+
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 	if (r)
-		goto free_apmixed_data;
+		goto unregister_gates;
 
 	return r;
 
+unregister_gates:
+	mtk_clk_register_gates(node, apmixed_clks, ARRAY_SIZE(apmixed_clks), clk_data);
+unregister_plls:
+	mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data);
 free_apmixed_data:
 	mtk_free_clk_data(clk_data);
 	return r;
diff --git a/drivers/clk/mediatek/clk-mt8195-apusys_pll.c b/drivers/clk/mediatek/clk-mt8195-apusys_pll.c
index db449ff877d7..1fff6f3d2dc7 100644
--- a/drivers/clk/mediatek/clk-mt8195-apusys_pll.c
+++ b/drivers/clk/mediatek/clk-mt8195-apusys_pll.c
@@ -66,13 +66,20 @@ static int clk_mt8195_apusys_pll_probe(struct platform_device *pdev)
 	if (!clk_data)
 		return -ENOMEM;
 
-	mtk_clk_register_plls(node, apusys_plls, ARRAY_SIZE(apusys_plls), clk_data);
-	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	r = mtk_clk_register_plls(node, apusys_plls, ARRAY_SIZE(apusys_plls), clk_data);
 	if (r)
 		goto free_apusys_pll_data;
 
+	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
+	if (r)
+		goto unregister_plls;
+
+	platform_set_drvdata(pdev, clk_data);
+
 	return r;
 
+unregister_plls:
+	mtk_clk_unregister_plls(apusys_plls, ARRAY_SIZE(apusys_plls), clk_data);
 free_apusys_pll_data:
 	mtk_free_clk_data(clk_data);
 	return r;
diff --git a/drivers/clk/mediatek/clk-mt8195-topckgen.c b/drivers/clk/mediatek/clk-mt8195-topckgen.c
index 3e2aba9c40bb..3631f49a5e5a 100644
--- a/drivers/clk/mediatek/clk-mt8195-topckgen.c
+++ b/drivers/clk/mediatek/clk-mt8195-topckgen.c
@@ -1239,25 +1239,52 @@ static int clk_mt8195_topck_probe(struct platform_device *pdev)
 		goto free_top_data;
 	}
 
-	mtk_clk_register_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks),
-				    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,
-			       &mt8195_clk_lock, top_clk_data);
-	mtk_clk_register_composites(top_muxes, ARRAY_SIZE(top_muxes), base,
-				    &mt8195_clk_lock, top_clk_data);
-	mtk_clk_register_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), base,
-				    &mt8195_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)
 		goto free_top_data;
 
+	r = mtk_clk_register_factors(top_divs, ARRAY_SIZE(top_divs), top_clk_data);
+	if (r)
+		goto unregister_fixed_clks;
+
+	r = mtk_clk_register_muxes(top_mtk_muxes, ARRAY_SIZE(top_mtk_muxes), node,
+				   &mt8195_clk_lock, top_clk_data);
+	if (r)
+		goto unregister_factors;
+
+	r = mtk_clk_register_composites(top_muxes, ARRAY_SIZE(top_muxes), base,
+					&mt8195_clk_lock, top_clk_data);
+	if (r)
+		goto unregister_muxes;
+
+	r = mtk_clk_register_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), base,
+					&mt8195_clk_lock, top_clk_data);
+	if (r)
+		goto unregister_composite_muxes;
+
+	r = mtk_clk_register_gates(node, top_clks, ARRAY_SIZE(top_clks), top_clk_data);
+	if (r)
+		goto unregister_composite_divs;
+
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, top_clk_data);
 	if (r)
-		goto free_top_data;
+		goto unregister_gates;
 
 	return r;
 
+unregister_gates:
+	mtk_clk_unregister_gates(top_clks, ARRAY_SIZE(top_clks), top_clk_data);
+unregister_composite_divs:
+	mtk_clk_unregister_composites(top_adj_divs, ARRAY_SIZE(top_adj_divs), top_clk_data);
+unregister_composite_muxes:
+	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_fixed_clks:
+	mtk_clk_unregister_fixed_clks(top_fixed_clks, ARRAY_SIZE(top_fixed_clks), top_clk_data);
 free_top_data:
 	mtk_free_clk_data(top_clk_data);
 	return r;
diff --git a/drivers/clk/mediatek/clk-mt8195-vdo0.c b/drivers/clk/mediatek/clk-mt8195-vdo0.c
index f7ff7618c714..af34eb564b1d 100644
--- a/drivers/clk/mediatek/clk-mt8195-vdo0.c
+++ b/drivers/clk/mediatek/clk-mt8195-vdo0.c
@@ -105,10 +105,12 @@ static int clk_mt8195_vdo0_probe(struct platform_device *pdev)
 
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 	if (r)
-		goto free_vdo0_data;
+		goto unregister_gates;
 
 	return r;
 
+unregister_gates:
+	mtk_clk_unregister_gates(vdo0_clks, ARRAY_SIZE(vdo0_clks), clk_data);
 free_vdo0_data:
 	mtk_free_clk_data(clk_data);
 	return r;
diff --git a/drivers/clk/mediatek/clk-mt8195-vdo1.c b/drivers/clk/mediatek/clk-mt8195-vdo1.c
index 03df8eae8838..6b502bbc730c 100644
--- a/drivers/clk/mediatek/clk-mt8195-vdo1.c
+++ b/drivers/clk/mediatek/clk-mt8195-vdo1.c
@@ -122,10 +122,12 @@ static int clk_mt8195_vdo1_probe(struct platform_device *pdev)
 
 	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 	if (r)
-		goto free_vdo1_data;
+		goto unregister_gates;
 
 	return r;
 
+unregister_gates:
+	mtk_clk_unregister_gates(vdo1_clks, ARRAY_SIZE(vdo1_clks), clk_data);
 free_vdo1_data:
 	mtk_free_clk_data(clk_data);
 	return r;
-- 
2.35.0.rc0.227.g00780c9af4-goog