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| author |   Viresh Kumar <viresh.kumar@linaro.org> | 2014-03-10 15:43:18 +0530 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-03-12 01:06:01 +0100 |
| commit | 2449d33a40553504867f407dd713e9bcf6f9fe24 (patch) | |
| tree | 86b3ce294a01a4a1c12dddb24d0ae5cd81a9c0a5 /drivers/cpufreq | |
| parent | cpufreq: Remove unnecessary variable/parameter 'frozen' (diff) | |
| download | linux-dev-2449d33a40553504867f407dd713e9bcf6f9fe24.tar.xz linux-dev-2449d33a40553504867f407dd713e9bcf6f9fe24.zip | |
cpufreq: SPEAr: Instantiate as platform_driver
As multiplatform build is being adopted by more and more
ARM platforms, initcall function should be used very carefully.
For example, when SPEAr cpufreq driver is enabled on a kernel
booted on a non-SPEAr board, we will get following boot time error:
spear_cpufreq: Invalid cpufreq_tbl
To eliminate this undesired the effect, the patch changes SPEAr
driver to have it instantiated as a platform_driver. Then it will
only run on platforms that create the platform_device "spear-cpufreq".
This patch also creates platform node for SPEAr13xx boards.
Reported-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/spear-cpufreq.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c index 410b54a9346c..4cfdcff8a310 100644 --- a/drivers/cpufreq/spear-cpufreq.c +++ b/drivers/cpufreq/spear-cpufreq.c @@ -19,6 +19,7 @@ #include <linux/init.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/platform_device.h> #include <linux/slab.h> #include <linux/types.h> @@ -166,7 +167,7 @@ static struct cpufreq_driver spear_cpufreq_driver = { .attr = cpufreq_generic_attr, }; -static int spear_cpufreq_driver_init(void) +static int spear_cpufreq_probe(struct platform_device *pdev) { struct device_node *np; const struct property *prop; @@ -234,7 +235,15 @@ out_put_node: of_node_put(np); return ret; } -late_initcall(spear_cpufreq_driver_init); + +static struct platform_driver spear_cpufreq_platdrv = { + .driver = { + .name = "spear-cpufreq", + .owner = THIS_MODULE, + }, + .probe = spear_cpufreq_probe, +}; +module_platform_driver(spear_cpufreq_platdrv); MODULE_AUTHOR("Deepak Sikri <deepak.sikri@st.com>"); MODULE_DESCRIPTION("SPEAr CPUFreq driver"); |