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| author | Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com> | 2013-09-10 18:59:47 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-09-19 03:53:43 +0200 |
| commit | b494b48dacb4dd848d76bc8871e55716486f0253 (patch) | |
| tree | 44d122a8bcf5d596578d9e97fdef92525cb40ede | |
| parent | e1825b25309264bf2d1275a8da9c997bca39b0d8 (diff) | |
| download | linux-b494b48dacb4dd848d76bc8871e55716486f0253.tar.gz linux-b494b48dacb4dd848d76bc8871e55716486f0253.tar.bz2 linux-b494b48dacb4dd848d76bc8871e55716486f0253.zip | |
cpufreq: imx6q-cpufreq: assign cpu_dev correctly to cpu0 device
Commit cdc58d602d2e657602a90c190cbf745886c95977 "cpufreq: imx6q-cpufreq:
remove device tree parsing for cpu nodes" assumed the pdev->dev is set to
cpu0 device in the platform code. But it actually points to the virtual
cpufreq-cpu0 platform device which is not present in the device tree.
Most of the information needed by cpufreq is stored in cpu0 DT node.
So cpu_dev must point to cpu0 device.
This patch fixes the wrong assignment to cpu_dev.
Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 9 | ||||
| -rw-r--r-- | drivers/cpufreq/imx6q-cpufreq.c | 7 |
2 files changed, 13 insertions, 3 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 85a1b51346c8..90372a21087f 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -233,10 +233,15 @@ put_node: of_node_put(np); } -static void __init imx6q_opp_init(struct device *cpu_dev) +static void __init imx6q_opp_init(void) { struct device_node *np; + struct device *cpu_dev = get_cpu_device(0); + if (!cpu_dev) { + pr_warn("failed to get cpu0 device\n"); + return; + } np = of_node_get(cpu_dev->of_node); if (!np) { pr_warn("failed to find cpu0 node\n"); @@ -268,7 +273,7 @@ static void __init imx6q_init_late(void) imx6q_cpuidle_init(); if (IS_ENABLED(CONFIG_ARM_IMX6Q_CPUFREQ)) { - imx6q_opp_init(&imx6q_cpufreq_pdev.dev); + imx6q_opp_init(); platform_device_register(&imx6q_cpufreq_pdev); } } diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index 3e396543aea4..c3fd2a101ca0 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -7,6 +7,7 @@ */ #include <linux/clk.h> +#include <linux/cpu.h> #include <linux/cpufreq.h> #include <linux/delay.h> #include <linux/err.h> @@ -202,7 +203,11 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev) unsigned long min_volt, max_volt; int num, ret; - cpu_dev = &pdev->dev; + cpu_dev = get_cpu_device(0); + if (!cpu_dev) { + pr_err("failed to get cpu0 device\n"); + return -ENODEV; + } np = of_node_get(cpu_dev->of_node); if (!np) { |