The patch titled
w1: w1 temp calculation overflow fix
has been removed from the -mm tree. Its filename was
w1-w1-temp-calculation-overflow-fix.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: w1: w1 temp calculation overflow fix
From: Ian Dall <ian@xxxxxxxxxxxxxxxxxxxxx>
Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12646
When the temperature exceeds 32767 milli-degrees the temperature overflows
to -32768 millidegrees. These are bothe well within the -55 - +125 degree
range for the sensor.
Fix overflow in left-shift of a u8.
Signed-off-by: Ian Dall <ian@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Evgeniy Polyakov <zbr@xxxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/w1/slaves/w1_therm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/w1/slaves/w1_therm.c~w1-w1-temp-calculation-overflow-fix drivers/w1/slaves/w1_therm.c
--- a/drivers/w1/slaves/w1_therm.c~w1-w1-temp-calculation-overflow-fix
+++ a/drivers/w1/slaves/w1_therm.c
@@ -115,7 +115,7 @@ static struct w1_therm_family_converter
static inline int w1_DS18B20_convert_temp(u8 rom[9])
{
- s16 t = (rom[1] << 8) | rom[0];
+ int t = ((s16)rom[1] << 8) | rom[0];
t = t*1000/16;
return t;
}
_
Patches currently in -mm which might be from ian@xxxxxxxxxxxxxxxxxxxxx are
origin.patch
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