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ARC: Elide redundant setup of DMA callbacks
For resources shared by all cores such as SLC and IOC, only the master core needs to do any setups / enabling / disabling etc. Cc: <stable@vger.kernel.org> Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
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@ -921,6 +921,15 @@ void arc_cache_init(void)
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printk(arc_cache_mumbojumbo(0, str, sizeof(str)));
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/*
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* Only master CPU needs to execute rest of function:
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* - Assume SMP so all cores will have same cache config so
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* any geomtry checks will be same for all
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* - IOC setup / dma callbacks only need to be setup once
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*/
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if (cpu)
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return;
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if (IS_ENABLED(CONFIG_ARC_HAS_ICACHE)) {
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struct cpuinfo_arc_cache *ic = &cpuinfo_arc700[cpu].icache;
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