On 1/25/12 3:57 PM, Andrew Morton wrote: > On Mon, 23 Jan 2012 12:56:29 -0700 > Philip Prindeville <[email protected]> wrote: > >> From: "Philip A. Prindeville" <[email protected]> >> >> GPIO 24 is used in reference designs as a soft-reset button, and >> the alix2 is no exception. Add it as a gpio-button. >> >> Use symbolic values to describe BIOS addresses. >> >> Record the model number. >> >> Redux: address Andres' review comments; make the model number exported; >> add support for DMI detection of the board and manufacturer; change >> detection return type to bool; add comment explaining that the model >> number is used by downstream drivers to detect if we have RFKILL GPIO >> line to mini-PCIe slots (alix 6 only). >> >> >> ... >> >> arch/x86/platform/geode/alix.c | 80 >> +++++++++++++++++++++++++++++++++++++-- >> 1 files changed, 75 insertions(+), 5 deletions(-) >> >> --- a/arch/x86/platform/geode/alix.c >> +++ b/arch/x86/platform/geode/alix.c >> >> ... >> >> @@ -24,14 +25,55 @@ >> #include <linux/leds.h> >> #include <linux/platform_device.h> >> #include <linux/gpio.h> >> +#include <linux/input.h> >> +#include <linux/gpio_keys.h> >> +#include <linux/dmi.h> >> >> #include <asm/geode.h> >> >> +#define BIOS_SIGNATURE_TINYBIOS 0xf0000 >> +#define BIOS_SIGNATURE_COREBOOT 0x500 >> +#define BIOS_REGION_SIZE 0x10000 >> + >> +/* >> + * the 6F2 has an RFKILL GPIO line to the mini-PCIe slots that isn't >> + * present on other Alix boards. Wifi drivers can use this symbol to >> + * detect if it's available. >> + */ >> +int alix_model; >> +EXPORT_SYMBOL(alix_model); > > This is odd. There are no references to this from outside this file > and it's hard to see how a wireless driver could use this - any such > driver would have to load this module on *all* machines (even non-x86) > simply to resolve this symbol.
It's for an out-of-tree driver that's only ever built for Alix hardware. Since it's only 4 bytes and one exported symbol, I figured it was acceptable... I can remove it, resubmit, and use a patch locally in my tree if that's preferable. -Philip > >> >> ... >> -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
