The issue is detected with the help of Coccinelle. zhong jiang (2): rtc:rtc-digicolor: Use PTR_ERR_OR_ZERO to replace the open code rtc:rtc-ds1347: Use PTR_ERR_OR_ZERO to replace the open code drivers/rtc/rtc-digicolor.c | 4 +--- drivers/rtc/rtc-ds1347.c | 5 +---- 2 files changed, 2 insertions(+), 7 deletions(-) -- 1.7.12.4