From 8e74b6edc9b7befd9f7a61b9271384eeb1eb8251 Mon Sep 17 00:00:00 2001 From: Andrew Morton Date: Mon, 30 Jul 2012 14:41:47 -0700 Subject: drivers/rtc/rtc-r9701.c: check that r9701_set_datetime() succeeded When the driver detects that the clock time is invalid, it attempts to write a sane time into the hardware. We curently assume that everything is OK if those writes succeeded. But it is better to re-read the time from the hardware to ensure that the new settings got there OK. Cc: Devendra Naga Cc: Alessandro Zummo Cc: Anatolij Gustschin Cc: Andreas Dumberger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-r9701.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/rtc/rtc-r9701.c b/drivers/rtc/rtc-r9701.c index e6c34c024706..2c183ebff715 100644 --- a/drivers/rtc/rtc-r9701.c +++ b/drivers/rtc/rtc-r9701.c @@ -147,7 +147,8 @@ static int __devinit r9701_probe(struct spi_device *spi) dt.tm_mon = 0; dt.tm_year = 100; - if (r9701_set_datetime(&spi->dev, &dt)) { + if (r9701_set_datetime(&spi->dev, &dt) || + r9701_get_datetime(&spi->dev, &dt)) { dev_err(&spi->dev, "cannot repair RTC register\n"); return -ENODEV; } -- cgit v1.2.3