Re: [PATCH] rtc: ds1307: Fix relying on reset value for weekday

[Alexandre Belloni]

On 01/06/2016 at 16:19:07 +0530, Keerthy wrote :
> The reset value of weekday is 0x1. This is wrong since
> the reset values of the day/month/year make up to Jan 1 2001.
> When computed weekday comes out to be Monday. On a scale
> of 1-7(Sunday - Saturday) it should be 0x2. So we should not
> be relying on the reset value.
> 
> Hence compute the wday using the current date/month/year values.
> Check if reset wday is any different from the computed wday,
> If different then set the wday which we computed using
> date/month/year values.
> 
> Document Referred:
> http://ww1.microchip.com/downloads/en/DeviceDoc/20002266F.pdf
> 
> Fixes: 1d1945d261a2af "drivers/rtc/rtc-ds1307.c: add alarm support for mcp7941x chips"
> Signed-off-by: Keerthy <j-keerthy@xxxxxx>
> ---
>  drivers/rtc/rtc-ds1307.c | 28 +++++++++++++++++++++++++++-
>  1 file changed, 27 insertions(+), 1 deletion(-)
> 
Applied, thanks.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com