linux-kernel - [PATCH 3.16 319/366] i2c: pmcmsp: fix error return from master

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Message-ID: <lsq.1539530741.875984091@decadent.org.uk>
Date:   Sun, 14 Oct 2018 16:25:41 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Peter Rosin" <peda@...ntia.se>,
        "Wolfram Sang" <wsa@...-dreams.de>
Subject: [PATCH 3.16 319/366] i2c: pmcmsp: fix error return from master_xfer

3.16.60-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Peter Rosin <peda@...ntia.se>

commit 12d9bbc5a7f347eaa65ff2a9d34995cadc05eb1b upstream.

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

Signed-off-by: Peter Rosin <peda@...ntia.se>
Signed-off-by: Wolfram Sang <wsa@...-dreams.de>
Fixes: 1b144df1d7d6 ("i2c: New PMC MSP71xx TWI bus driver")
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 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
@@ -596,7 +596,7 @@ 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;