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X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Hello AngeloGioacchino Del Regno, The patch 4c02c9af3cb9: "clk: mediatek: mt8173: Break down clock drivers and allow module build" from Jan 20, 2023, leads to the following Smatch static checker warning: drivers/clk/mediatek/clk-mt8173-apmixedsys.c:95 clk_mt8173_apmixed_probe() warn: passing zero to 'PTR_ERR' drivers/clk/mediatek/clk-mt8173-apmixedsys.c 85 static int clk_mt8173_apmixed_probe(struct platform_device *pdev) 86 { 87 struct device_node *node = pdev->dev.of_node; 88 struct clk_hw_onecell_data *clk_data; 89 void __iomem *base; 90 struct clk_hw *hw; 91 int r; 92 93 base = of_iomap(node, 0); 94 if (!base) --> 95 return PTR_ERR(base); return -ENOMEM; 96 97 clk_data = mtk_alloc_clk_data(CLK_APMIXED_NR_CLK); 98 if (IS_ERR_OR_NULL(clk_data)) 99 return -ENOMEM; mtk_alloc_clk_data() does not return error pointers. This needs to call of_unmap(base);. The ->remove() function doesn't unmap base either. 100 101 r = mtk_clk_register_plls(node, plls, ARRAY_SIZE(plls), clk_data); 102 if (r) 103 goto free_clk_data; 104 105 hw = mtk_clk_register_ref2usb_tx("ref2usb_tx", "clk26m", base + REGOFF_REF2USB); 106 if (IS_ERR(hw)) { 107 r = PTR_ERR(hw); 108 dev_err(&pdev->dev, "Failed to register ref2usb_tx: %d\n", r); 109 goto unregister_plls; 110 } 111 clk_data->hws[CLK_APMIXED_REF2USB_TX] = hw; 112 113 hw = devm_clk_hw_register_divider(&pdev->dev, "hdmi_ref", "tvdpll_594m", 0, 114 base + REGOFF_HDMI_REF, 16, 3, 115 CLK_DIVIDER_POWER_OF_TWO, NULL); 116 clk_data->hws[CLK_APMIXED_HDMI_REF] = hw; 117 118 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data); 119 if (r) 120 goto unregister_ref2usb; 121 122 return 0; 123 124 unregister_ref2usb: 125 mtk_clk_unregister_ref2usb_tx(clk_data->hws[CLK_APMIXED_REF2USB_TX]); 126 unregister_plls: 127 mtk_clk_unregister_plls(plls, ARRAY_SIZE(plls), clk_data); 128 free_clk_data: 129 mtk_free_clk_data(clk_data); 130 return r; 131 } regards, dan carpenter