Messages in this thread | | | Date | Fri, 7 Feb 2003 15:18:25 -0800 (PST) | From | "Randy.Dunlap" <> | Subject | Re: [PATCH][Trvial 2.5.59] rtc.c is requesting more ioports then it really uses |
| |
On 7 Feb 2003, Rusty Lynch wrote:
| I need to enable a device that talks to port 0x79h, but for some | reason the rtc is requesting move bytes then it really uses. Here | is a patch that makes the rtc only request what it uses. | | --rustyl | | --- drivers/char/rtc.c.orig 2003-02-07 14:35:31.000000000 -0800 | +++ drivers/char/rtc.c 2003-02-07 13:25:45.000000000 -0800 | @@ -47,7 +47,7 @@ | | #define RTC_VERSION "1.11" | | -#define RTC_IO_EXTENT 0x10 /* Only really two ports, but... */ | +#define RTC_IO_EXTENT 0x2 | | /* | * Note that *all* calls to CMOS_READ and CMOS_WRITE are done with | -
Some Intel chipset specs list RTC as using 0x70 - 0x77, probably with some aliasing in there, so it looks to me like an EXTENT of 8 would be safer and still allow you access to 0x79.
I'm looking at 82801BA-ICH2, 82801-ICH3, and 82801AA-ICH0 specs.
-- ~Randy
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |