Hi Greg,
On Wed, May 18, 2022 at 8:56 AM Greg Ungerer <gerg@xxxxxxxxxxxxxx> wrote:
Configuring for a nommu classic m68k target and enabling the generic rtc
driver (CONFIG_RTC_DRV_GENERIC) will result in the following compile
error:
m68k-linux-ld: arch/m68k/kernel/time.o: in function `rtc_ioctl':
time.c:(.text+0x82): undefined reference to `mach_get_rtc_pll'
m68k-linux-ld: time.c:(.text+0xbc): undefined reference to `mach_set_rtc_pll'
m68k-linux-ld: time.c:(.text+0xf4): undefined reference to `mach_set_rtc_pll'
There is no definitions of "mach_set_rtc_pll" and "mach_get_rtc_pll" in the
nommu code paths. Move these definitions and the associated "mach_hwclk",
so that they are around their use case in time.c. This means they will
always be defined on the builds that require them, and not on those that
cannot use them - such as ColdFire (both with and without MMU enabled).
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Greg Ungerer <gerg@xxxxxxxxxxxxxx>
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -82,6 +86,11 @@ void read_persistent_clock64(struct timespec64 *ts)
#endif
#if IS_ENABLED(CONFIG_RTC_DRV_GENERIC)
+int (*mach_get_rtc_pll)(struct rtc_pll_info *);
+int (*mach_set_rtc_pll)(struct rtc_pll_info *);
+EXPORT_SYMBOL(mach_get_rtc_pll);
+EXPORT_SYMBOL(mach_set_rtc_pll);
Oops, this causes build failures for Q40 with CONFIG_RTC_DRV_GENERIC=n,
as arch/m68k/q40/config.c uses mach_]gs]et_rtc_pll() unconditionally.
+
static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
{
mach_hwclk(0, tm);
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
