From: Stephen Boyd <sboyd@xxxxxxxxxx> [ Upstream commit 1a4549c150e27dbc3aea762e879a88209df6d1a5 ] A future patch is going to change semantics of clk_register() so that clk_hw::init is guaranteed to be NULL after a clk is registered. Avoid referencing this member here so that we don't run into NULL pointer exceptions. Cc: Jun Nie <jun.nie@xxxxxxxxxx> Cc: Shawn Guo <shawnguo@xxxxxxxxxx> Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxx> Link: https://lkml.kernel.org/r/20190815160020.183334-3-sboyd@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/clk/zte/clk-zx296718.c | 109 +++++++++++++++------------------ 1 file changed, 49 insertions(+), 60 deletions(-) diff --git a/drivers/clk/zte/clk-zx296718.c b/drivers/clk/zte/clk-zx296718.c index fd6c347bec6a7..dd7045bc48c15 100644 --- a/drivers/clk/zte/clk-zx296718.c +++ b/drivers/clk/zte/clk-zx296718.c @@ -564,6 +564,7 @@ static int __init top_clocks_init(struct device_node *np) { void __iomem *reg_base; int i, ret; + const char *name; reg_base = of_iomap(np, 0); if (!reg_base) { @@ -573,11 +574,10 @@ static int __init top_clocks_init(struct device_node *np) for (i = 0; i < ARRAY_SIZE(zx296718_pll_clk); i++) { zx296718_pll_clk[i].reg_base += (uintptr_t)reg_base; + name = zx296718_pll_clk[i].hw.init->name; ret = clk_hw_register(NULL, &zx296718_pll_clk[i].hw); - if (ret) { - pr_warn("top clk %s init error!\n", - zx296718_pll_clk[i].hw.init->name); - } + if (ret) + pr_warn("top clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(top_ffactor_clk); i++) { @@ -585,11 +585,10 @@ static int __init top_clocks_init(struct device_node *np) top_hw_onecell_data.hws[top_ffactor_clk[i].id] = &top_ffactor_clk[i].factor.hw; + name = top_ffactor_clk[i].factor.hw.init->name; ret = clk_hw_register(NULL, &top_ffactor_clk[i].factor.hw); - if (ret) { - pr_warn("top clk %s init error!\n", - top_ffactor_clk[i].factor.hw.init->name); - } + if (ret) + pr_warn("top clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(top_mux_clk); i++) { @@ -598,11 +597,10 @@ static int __init top_clocks_init(struct device_node *np) &top_mux_clk[i].mux.hw; top_mux_clk[i].mux.reg += (uintptr_t)reg_base; + name = top_mux_clk[i].mux.hw.init->name; ret = clk_hw_register(NULL, &top_mux_clk[i].mux.hw); - if (ret) { - pr_warn("top clk %s init error!\n", - top_mux_clk[i].mux.hw.init->name); - } + if (ret) + pr_warn("top clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(top_gate_clk); i++) { @@ -611,11 +609,10 @@ static int __init top_clocks_init(struct device_node *np) &top_gate_clk[i].gate.hw; top_gate_clk[i].gate.reg += (uintptr_t)reg_base; + name = top_gate_clk[i].gate.hw.init->name; ret = clk_hw_register(NULL, &top_gate_clk[i].gate.hw); - if (ret) { - pr_warn("top clk %s init error!\n", - top_gate_clk[i].gate.hw.init->name); - } + if (ret) + pr_warn("top clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(top_div_clk); i++) { @@ -624,11 +621,10 @@ static int __init top_clocks_init(struct device_node *np) &top_div_clk[i].div.hw; top_div_clk[i].div.reg += (uintptr_t)reg_base; + name = top_div_clk[i].div.hw.init->name; ret = clk_hw_register(NULL, &top_div_clk[i].div.hw); - if (ret) { - pr_warn("top clk %s init error!\n", - top_div_clk[i].div.hw.init->name); - } + if (ret) + pr_warn("top clk %s init error!\n", name); } ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, @@ -754,6 +750,7 @@ static int __init lsp0_clocks_init(struct device_node *np) { void __iomem *reg_base; int i, ret; + const char *name; reg_base = of_iomap(np, 0); if (!reg_base) { @@ -767,11 +764,10 @@ static int __init lsp0_clocks_init(struct device_node *np) &lsp0_mux_clk[i].mux.hw; lsp0_mux_clk[i].mux.reg += (uintptr_t)reg_base; + name = lsp0_mux_clk[i].mux.hw.init->name; ret = clk_hw_register(NULL, &lsp0_mux_clk[i].mux.hw); - if (ret) { - pr_warn("lsp0 clk %s init error!\n", - lsp0_mux_clk[i].mux.hw.init->name); - } + if (ret) + pr_warn("lsp0 clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(lsp0_gate_clk); i++) { @@ -780,11 +776,10 @@ static int __init lsp0_clocks_init(struct device_node *np) &lsp0_gate_clk[i].gate.hw; lsp0_gate_clk[i].gate.reg += (uintptr_t)reg_base; + name = lsp0_gate_clk[i].gate.hw.init->name; ret = clk_hw_register(NULL, &lsp0_gate_clk[i].gate.hw); - if (ret) { - pr_warn("lsp0 clk %s init error!\n", - lsp0_gate_clk[i].gate.hw.init->name); - } + if (ret) + pr_warn("lsp0 clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(lsp0_div_clk); i++) { @@ -793,11 +788,10 @@ static int __init lsp0_clocks_init(struct device_node *np) &lsp0_div_clk[i].div.hw; lsp0_div_clk[i].div.reg += (uintptr_t)reg_base; + name = lsp0_div_clk[i].div.hw.init->name; ret = clk_hw_register(NULL, &lsp0_div_clk[i].div.hw); - if (ret) { - pr_warn("lsp0 clk %s init error!\n", - lsp0_div_clk[i].div.hw.init->name); - } + if (ret) + pr_warn("lsp0 clk %s init error!\n", name); } ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, @@ -862,6 +856,7 @@ static int __init lsp1_clocks_init(struct device_node *np) { void __iomem *reg_base; int i, ret; + const char *name; reg_base = of_iomap(np, 0); if (!reg_base) { @@ -875,11 +870,10 @@ static int __init lsp1_clocks_init(struct device_node *np) &lsp0_mux_clk[i].mux.hw; lsp1_mux_clk[i].mux.reg += (uintptr_t)reg_base; + name = lsp1_mux_clk[i].mux.hw.init->name; ret = clk_hw_register(NULL, &lsp1_mux_clk[i].mux.hw); - if (ret) { - pr_warn("lsp1 clk %s init error!\n", - lsp1_mux_clk[i].mux.hw.init->name); - } + if (ret) + pr_warn("lsp1 clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(lsp1_gate_clk); i++) { @@ -888,11 +882,10 @@ static int __init lsp1_clocks_init(struct device_node *np) &lsp1_gate_clk[i].gate.hw; lsp1_gate_clk[i].gate.reg += (uintptr_t)reg_base; + name = lsp1_gate_clk[i].gate.hw.init->name; ret = clk_hw_register(NULL, &lsp1_gate_clk[i].gate.hw); - if (ret) { - pr_warn("lsp1 clk %s init error!\n", - lsp1_gate_clk[i].gate.hw.init->name); - } + if (ret) + pr_warn("lsp1 clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(lsp1_div_clk); i++) { @@ -901,11 +894,10 @@ static int __init lsp1_clocks_init(struct device_node *np) &lsp1_div_clk[i].div.hw; lsp1_div_clk[i].div.reg += (uintptr_t)reg_base; + name = lsp1_div_clk[i].div.hw.init->name; ret = clk_hw_register(NULL, &lsp1_div_clk[i].div.hw); - if (ret) { - pr_warn("lsp1 clk %s init error!\n", - lsp1_div_clk[i].div.hw.init->name); - } + if (ret) + pr_warn("lsp1 clk %s init error!\n", name); } ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, @@ -979,6 +971,7 @@ static int __init audio_clocks_init(struct device_node *np) { void __iomem *reg_base; int i, ret; + const char *name; reg_base = of_iomap(np, 0); if (!reg_base) { @@ -992,11 +985,10 @@ static int __init audio_clocks_init(struct device_node *np) &audio_mux_clk[i].mux.hw; audio_mux_clk[i].mux.reg += (uintptr_t)reg_base; + name = audio_mux_clk[i].mux.hw.init->name; ret = clk_hw_register(NULL, &audio_mux_clk[i].mux.hw); - if (ret) { - pr_warn("audio clk %s init error!\n", - audio_mux_clk[i].mux.hw.init->name); - } + if (ret) + pr_warn("audio clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(audio_adiv_clk); i++) { @@ -1005,11 +997,10 @@ static int __init audio_clocks_init(struct device_node *np) &audio_adiv_clk[i].hw; audio_adiv_clk[i].reg_base += (uintptr_t)reg_base; + name = audio_adiv_clk[i].hw.init->name; ret = clk_hw_register(NULL, &audio_adiv_clk[i].hw); - if (ret) { - pr_warn("audio clk %s init error!\n", - audio_adiv_clk[i].hw.init->name); - } + if (ret) + pr_warn("audio clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(audio_div_clk); i++) { @@ -1018,11 +1009,10 @@ static int __init audio_clocks_init(struct device_node *np) &audio_div_clk[i].div.hw; audio_div_clk[i].div.reg += (uintptr_t)reg_base; + name = audio_div_clk[i].div.hw.init->name; ret = clk_hw_register(NULL, &audio_div_clk[i].div.hw); - if (ret) { - pr_warn("audio clk %s init error!\n", - audio_div_clk[i].div.hw.init->name); - } + if (ret) + pr_warn("audio clk %s init error!\n", name); } for (i = 0; i < ARRAY_SIZE(audio_gate_clk); i++) { @@ -1031,11 +1021,10 @@ static int __init audio_clocks_init(struct device_node *np) &audio_gate_clk[i].gate.hw; audio_gate_clk[i].gate.reg += (uintptr_t)reg_base; + name = audio_gate_clk[i].gate.hw.init->name; ret = clk_hw_register(NULL, &audio_gate_clk[i].gate.hw); - if (ret) { - pr_warn("audio clk %s init error!\n", - audio_gate_clk[i].gate.hw.init->name); - } + if (ret) + pr_warn("audio clk %s init error!\n", name); } ret = of_clk_add_hw_provider(np, of_clk_hw_onecell_get, -- 2.20.1
