Commit aa26351d authored by Alex Elder's avatar Alex Elder Committed by Greg Kroah-Hartman
Browse files

greybus: define GB_OP_NONEXISTENT 



The i2c protocol needs a way to indicate an i2c device doesn't exist
(which is not necessarily an error).  Define GB_OP_NONEXISTENT to
indicate this, and updating the status<->errno mapping functions
accordingly.

Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <greg@kroah.com>
parent 5f474d49

drivers/staging/greybus/operation.c

+4 −0
Original line number Diff line number Diff line
@@ -396,6 +396,8 @@ static int gb_operation_status_map(u8 status) 
		return -EINVAL;

	case GB_OP_RETRY:

		return -EAGAIN;

	case GB_OP_NONEXISTENT:

		return -ENODEV;

	case GB_OP_MALFUNCTION:

		return -EILSEQ;

	case GB_OP_UNKNOWN_ERROR:
@@ -431,6 +433,8 @@ static u8 gb_operation_errno_map(int errno) 
		return GB_OP_RETRY;

	case -EILSEQ:

		return GB_OP_MALFUNCTION;

	case -ENODEV:

		return GB_OP_NONEXISTENT;

	case -EIO:

	default:

		return GB_OP_UNKNOWN_ERROR;

drivers/staging/greybus/operation.h

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ enum gb_operation_result { 
	GB_OP_OVERFLOW		= 0x05,

	GB_OP_INVALID		= 0x06,

	GB_OP_RETRY		= 0x07,

	GB_OP_NONEXISTENT	= 0x08,

	GB_OP_UNKNOWN_ERROR	= 0xfe,

	GB_OP_MALFUNCTION	= 0xff,

};