1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/mfd/ab8500-spi.c b/drivers/mfd/ab8500-spi.c
index b81d4f768ef6..e1c8b62b086d 100644
--- a/drivers/mfd/ab8500-spi.c
+++ b/drivers/mfd/ab8500-spi.c
@@ -68,7 +68,12 @@ static int ab8500_spi_read(struct ab8500 *ab8500, u16 addr)
 
         ret = spi_sync(spi, &msg);
         if (!ret)
-                ret = ab8500->rx_buf[0];
+                /*
+                 * Only the 8 lowermost bytes are
+                 * defined with value, the rest may
+                 * vary depending on chip/board noise.
+                 */
+                ret = ab8500->rx_buf[0] & 0xFFU;
 
         return ret;
 }