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先把 C 提交 及 B 批次全部回退,再使用cherry-pick命令将 C 提交重新再生成一个新的提交 C'',这样就实现了将 B提交回退的需求。完整的过程如下:
gpio = pin->gpio;if(!gpio_is_valid(gpio)) { dev_err(dev,"invalid gpio: %d\n", gpio);return-EINVAL; } pinstate = pin->init_state; ret =devm_gpio_request_one(dev, gpio, pinstate, name[id]);if(ret == -EBUSY) { dev_warn(dev,"gpio%d already used\n", gpio);return0; }ret...
GPIOs requested with this function will be + * automatically freed on driver detach. + * + * If an GPIO allocated with this function needs to be freed + * separately, devm_gpio_free() must be used. + */ + +int devm_gpio_request(struct device *dev, unsigned gpio, const char *labe...
+ ret = devm_gpio_request_one(&pdev->dev, pdata->dvs_gpio, + dcdc->dvs_gpio_state ? GPIOF_INIT_HIGH : 0, + "DCDC DVS"); if (ret < 0) { dev_err(wm831x->dev, "Failed to get %s DVS GPIO: %d\n", dcdc->name, ret); ...
devm_gpio_request_one 返回值 在版本迭代开发过程中,相信很多人都会有过错误提交的时候(至少良许有过几次这样的体验)。这种情况下,菜鸟程序员可能就会虎驱一震,紧张得不知所措。而资深程序员就会微微一笑,摸一摸锃亮的脑门,然后默默的进行版本回退。对于版本的回退,我们经常会用到两个命令:git resetgit revert那...