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Commit c3da23be authored by Corentin Chary's avatar Corentin Chary Committed by Artem Bityutskiy
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UBI: add ioctl for unmap operation 



This patch adds ioctl for the LEB unmap operation (as a debugging
option so far).

[Re-named ioctl to make it look the same as the other one and made
 some minor stylistic changes. Artem Bityutskiy.]

Signed-off-by: default avatarCorentin Chary <corentincj@iksaif.net>
Signed-off-by: default avatarArtem Bityutskiy <Artem.Bityutskiy@nokia.com>
parent 141e6ebd

drivers/mtd/ubi/cdev.c

+14 −1
Original line number Diff line number Diff line
@@ -532,13 +532,26 @@ static int vol_cdev_ioctl(struct inode *inode, struct file *file, 
		err = ubi_leb_map(desc, req.lnum, req.dtype);

		break;

	}



	/* Logical eraseblock un-map command */

	case UBI_IOCEBUNMAP:

	{

		int32_t lnum;



		err = get_user(lnum, (__user int32_t *)argp);

		if (err) {

			err = -EFAULT;

			break;

		}

		err = ubi_leb_unmap(desc, lnum);

		break;

	}

#endif



	default:

		err = -ENOTTY;

		break;

	}



	return err;

}

include/mtd/ubi-user.h

+2 −1
Original line number Diff line number Diff line
@@ -135,7 +135,8 @@ 
#define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t)

/* Map an eraseblock, used for debugging, disabled by default */

#define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req)



/* Unmap an eraseblock, used for debugging, disabled by default */

#define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t)



/* Maximum MTD device name length supported by UBI */

#define MAX_UBI_MTD_NAME_LEN 127