[PATCH 4.16 259/279] i2c: pmcmsp: fix error return from master_xfer

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4.16-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Rosin <peda@xxxxxxxxxx>

[ Upstream commit 12d9bbc5a7f347eaa65ff2a9d34995cadc05eb1b ]

Returning -1 (-EPERM) is not appropriate here, go with -EIO.

Signed-off-by: Peter Rosin <peda@xxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Fixes: 1b144df1d7d6 ("i2c: New PMC MSP71xx TWI bus driver")
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/i2c/busses/i2c-pmcmsp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/i2c/busses/i2c-pmcmsp.c
+++ b/drivers/i2c/busses/i2c-pmcmsp.c
@@ -564,7 +564,7 @@ static int pmcmsptwi_master_xfer(struct
 		 * TODO: We could potentially loop and retry in the case
 		 * of MSP_TWI_XFER_TIMEOUT.
 		 */
-		return -1;
+		return -EIO;
 	}
 
 	return num;





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