[U-Boot] [PATCH 3/3] ds1621: Fix negative temperature readings
Peter Tyser
ptyser at xes-inc.com
Wed Sep 29 20:46:19 CEST 2010
From: Jeff Dischler <jdischler at xes-inc.com>
Fix bug where signed data was processed as unsigned. The bug previously
resulted in negative temperature readings wrapping around, eg -10 became
245.
Signed-off-by: Jeff Dischler <jdischler at xes-inc.com>
Signed-off-by: Peter Tyser <ptyser at xes-inc.com>
---
drivers/hwmon/ds1621.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/hwmon/ds1621.c b/drivers/hwmon/ds1621.c
index 60bf502..5a2ea62 100644
--- a/drivers/hwmon/ds1621.c
+++ b/drivers/hwmon/ds1621.c
@@ -80,7 +80,7 @@ int dtt_read(int sensor, int reg)
/* Handle 2 byte result */
if (dlen == 2)
- return ((int)((short)data[1] + (((short)data[0]) << 8)));
+ return (short)((data[0] << 8) | data[1]);
return (int)data[0];
}
--
1.7.0.4
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