Re: [patch 4/5] Add MMC password protection (lock/unlock) support V3

Anderson Briglia wrote:

>@@ -238,6 +295,11 @@ int mmc_register_card(struct mmc_card *c
> 			if (ret)
> 				device_del(&card->dev);
> 		}
>+#ifdef CONFIG_MMC_PASSWORDS
>+		ret = device_create_file(&card->dev, &mmc_dev_attr_lockable);
>+		if (ret)
>+			device_del(&card->dev);
>+#endif
> 	}
> 	return ret;
> }
>  
>

It might be wise to also check the command classes here. I don't believe
SDIO supports locking.

Rgds
Pierre

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