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imx6在使用时，编译的内核发现i2c系统好像没起来，内核部分打印信息如下 mc_pfuze 1-0008: recv failed!:-5,80 mc_pfuze: probe of 1-0008 failed with error -1
上两句好像是电源问题
i2c-core: driver [isl29023] using legacysuspend method i2c-core: driver [isl29023] using legacy resumemethod
查了i2c-core源码如下
if (driver->suspend)
pr_warn("i2c-core: driver [%s] using legacy suspend method\n",
driver->driver.name);
if (driver->resume)
pr_warn("i2c-core: driver [%s] using legacy resume method\n",
driver->driver.name);
想问一下什么情况下这个driver->suspend、driver->resume会生效，他生效代表什么意思
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