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path: root/target/linux/ipq806x/patches-3.18/145-cpufreq-Add-a-cpufreq-krait-based-on-cpufre.patch
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* ipq806x: fix uninitialized variable usage in cpufreq-kraitJonas Gorski2015-09-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In krait_cpufreq_probe, both freq and max_cpu_freq are never initialized, so the max_cpu_freq will have a random value at the end. Fix this by properly initializing max_cpu_freq to 0 and storing the clk frequency in freq as well, to make it similar to how it's calculated in krait_set_target. Fixes the following warnings: In file included from include/linux/clk.h:16:0, from drivers/cpufreq/cpufreq-krait.c:13: drivers/cpufreq/cpufreq-krait.c: In function 'krait_cpufreq_probe': include/linux/kernel.h:714:24: warning: 'freq' may be used uninitialized in this function [-Wmaybe-uninitialized] _max1 > _max2 ? _max1 : _max2; }) ^ drivers/cpufreq/cpufreq-krait.c:217:25: note: 'freq' was declared here unsigned long freq_Hz, freq, max_cpu_freq; ^ In file included from include/linux/clk.h:16:0, from drivers/cpufreq/cpufreq-krait.c:13: include/linux/kernel.h:714:24: warning: 'max_cpu_freq' may be used uninitialized in this function [-Wmaybe-uninitialized] _max1 > _max2 ? _max1 : _max2; }) ^ drivers/cpufreq/cpufreq-krait.c:217:31: note: 'max_cpu_freq' was declared here unsigned long freq_Hz, freq, max_cpu_freq; Signed-off-by: Jonas Gorski <jogo@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@46839 3c298f89-4303-0410-b956-a3cf2f4a3e73
* ipq806x: add & enable cpufreq supportJohn Crispin2015-05-231-0/+461
This change set enables frequency scaling on ipq806x, which speeds-up the CPU and allows it to achieve its max frequency. These patches are cherry-picked & backported from the following location: *130-132: linux-next *133-143: LKML - https://lkml.org/lkml/2015/3/21/15 *144: derived from other qcom similar dts *145: derived from https://chromium.googlesource.com/chromiumos/third_party/kernel/+/chromeos-3.14/drivers/cpufreq/cpufreq-krait.c Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45730 3c298f89-4303-0410-b956-a3cf2f4a3e73