android_kernel_xiaomi_sm8350/arch/i386/kernel/pcspeaker.c

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#include <linux/platform_device.h>
#include <linux/errno.h>
#include <linux/init.h>
static __init int add_pcspkr(void)
{
struct platform_device *pd;
int ret;
pd = platform_device_alloc("pcspkr", -1);
if (!pd)
return -ENOMEM;
ret = platform_device_add(pd);
if (ret)
platform_device_put(pd);
return ret;
}
device_initcall(add_pcspkr);