Test

1. my_first_test
2. 部分代码

代码如下：

static int mmc_bus_probe(struct device *dev){    struct mmc_driver *drv = to_mmc_driver(dev->driver);    struct mmc_card *card = mmc_dev_to_card(dev);    return drv->probe(card);}static int mmc_bus_remove(struct device *dev){    struct mmc_driver *drv = to_mmc_driver(dev->driver);    struct mmc_card *card = mmc_dev_to_card(dev);    drv->remove(card);    return 0;}