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(parent: 00c9329) | patch
rtc: ds1307: ds3231 temperature s16 overflow
authorZhuang Yuyao <mlistz@gmail.com>
Mon, 18 Apr 2016 00:21:42 +0000 (09:21 +0900)
committerAlexandre Belloni <alexandre.belloni@free-electrons.com>
Thu, 21 Apr 2016 21:20:59 +0000 (23:20 +0200)
commit9a3dce62cc5640d7ea17733a2bd1b57665c232b0
tree18262d9099432d76b6598453783c69ea25d77c8atree | snapshot (tar.gz zip)
parent00c9329ebe2d19a13afd86ba75218f868f2788bacommit | diff
rtc: ds1307: ds3231 temperature s16 overflow

while retrieving temperature from ds3231, the result may be overflow
since s16 is too small for a multiplication with 250.

ie. if temp_buf[0] == 0x2d, the result (s16 temp) will be negative.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Tested-by: Michael Tatarinov <kukabu@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
drivers/rtc/rtc-ds1307.c diff | blob | blame | history