Re: [PATCH] rtc: ds1307: fix ds1339 wakealarm support

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Hello,

On 22/10/2018 14:38:12+0200, Soeren Moch wrote:
> Commit 51ed73eb998a1c79a2b0e9bed68f75a8a2c93b9b ("rtc: ds1340: Add support
> for trickle charger.") breaks ds1339 wakealarm support by limiting
> accessible registers. Fix this.
> 
> Fixes: 51ed73eb998a ("rtc: ds1340: Add support for trickle charger.")
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Soeren Moch <smoch@xxxxxx>
> --
> Cc: Andrea Greco <a.greco@xxxxxxxxx>
> Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
> Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
> Cc: linux-rtc@xxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> ---
>  drivers/rtc/rtc-ds1307.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
> index 4b2b4627daeb..71396b62dc52 100644
> --- a/drivers/rtc/rtc-ds1307.c
> +++ b/drivers/rtc/rtc-ds1307.c
> @@ -1384,7 +1384,6 @@ static void ds1307_clks_register(struct ds1307 *ds1307)
>  static const struct regmap_config regmap_config = {
>  	.reg_bits = 8,
>  	.val_bits = 8,
> -	.max_register = 0x9,

I would prefer having a different regmap_config for chips that have more
registers. I guess you could put a pointer to a regmap_config in chip_desc.

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com



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