From 42913c7992e9aca4deded016a05f6654e9b0807b Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Thu, 3 Jan 2013 09:34:20 +0000 Subject: [PATCH] MIPS: Loongson2: Use clk API instead of direct dereferences A struct clk value is intended to be an abstract pointer, so it should be manipulated using the various API functions. clk_put is additionally added on the failure paths. The semantic match that finds the first problem is as follows: (http://coccinelle.lip6.fr/) // @@ expression e,e1; identifier i; @@ *e = clk_get(...) ... when != e = e1 when any *e->i // Signed-off-by: Julia Lawall Cc: kernel-janitors@vger.kernel.org Cc: linux-mips@linux-mips.org, Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/4751/ Signed-off-by: Ralf Baechle --- arch/mips/kernel/cpufreq/loongson2_cpufreq.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/arch/mips/kernel/cpufreq/loongson2_cpufreq.c b/arch/mips/kernel/cpufreq/loongson2_cpufreq.c index bb51d31..3237c52 100644 --- a/arch/mips/kernel/cpufreq/loongson2_cpufreq.c +++ b/arch/mips/kernel/cpufreq/loongson2_cpufreq.c @@ -107,6 +107,8 @@ static int loongson2_cpufreq_target(struct cpufreq_policy *policy, static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy) { int i; + unsigned long rate; + int ret; if (!cpu_online(policy->cpu)) return -ENODEV; @@ -117,15 +119,22 @@ static int loongson2_cpufreq_cpu_init(struct cpufreq_policy *policy) return PTR_ERR(cpuclk); } - cpuclk->rate = cpu_clock_freq / 1000; - if (!cpuclk->rate) + rate = cpu_clock_freq / 1000; + if (!rate) { + clk_put(cpuclk); return -EINVAL; + } + ret = clk_set_rate(cpuclk, rate); + if (ret) { + clk_put(cpuclk); + return ret; + } /* clock table init */ for (i = 2; (loongson2_clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) - loongson2_clockmod_table[i].frequency = (cpuclk->rate * i) / 8; + loongson2_clockmod_table[i].frequency = (rate * i) / 8; policy->cur = loongson2_cpufreq_get(policy->cpu); -- 2.7.4