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Subject[PATCH 1/3] m68knommu: fix undefined reference to `mach_get_rtc_pll'
Date
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@intel.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
---
arch/m68k/kernel/setup_mm.c | 7 -------
arch/m68k/kernel/setup_no.c | 1 -
arch/m68k/kernel/time.c | 9 +++++++++
3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/arch/m68k/kernel/setup_mm.c b/arch/m68k/kernel/setup_mm.c
index 8f94feed969c..07317367ead8 100644
--- a/arch/m68k/kernel/setup_mm.c
+++ b/arch/m68k/kernel/setup_mm.c
@@ -87,15 +87,8 @@ void (*mach_sched_init) (void) __initdata = NULL;
void (*mach_init_IRQ) (void) __initdata = NULL;
void (*mach_get_model) (char *model);
void (*mach_get_hardware_list) (struct seq_file *m);
-/* machine dependent timer functions */
-int (*mach_hwclk) (int, struct rtc_time*);
-EXPORT_SYMBOL(mach_hwclk);
unsigned int (*mach_get_ss)(void);
-int (*mach_get_rtc_pll)(struct rtc_pll_info *);
-int (*mach_set_rtc_pll)(struct rtc_pll_info *);
EXPORT_SYMBOL(mach_get_ss);
-EXPORT_SYMBOL(mach_get_rtc_pll);
-EXPORT_SYMBOL(mach_set_rtc_pll);
void (*mach_reset)( void );
void (*mach_halt)( void );
void (*mach_power_off)( void );
diff --git a/arch/m68k/kernel/setup_no.c b/arch/m68k/kernel/setup_no.c
index 5e4104f07a44..19eea73d3c17 100644
--- a/arch/m68k/kernel/setup_no.c
+++ b/arch/m68k/kernel/setup_no.c
@@ -50,7 +50,6 @@ char __initdata command_line[COMMAND_LINE_SIZE];

/* machine dependent timer functions */
void (*mach_sched_init)(void) __initdata = NULL;
-int (*mach_hwclk) (int, struct rtc_time*);

/* machine dependent reboot functions */
void (*mach_reset)(void);
diff --git a/arch/m68k/kernel/time.c b/arch/m68k/kernel/time.c
index 340ffeea0a9d..97a5438562cd 100644
--- a/arch/m68k/kernel/time.c
+++ b/arch/m68k/kernel/time.c
@@ -63,6 +63,10 @@ void timer_heartbeat(void)
#endif /* CONFIG_HEARTBEAT */

#ifdef CONFIG_M68KCLASSIC
+/* machine dependent timer functions */
+int (*mach_hwclk) (int, struct rtc_time*);
+EXPORT_SYMBOL(mach_hwclk);
+
#if !IS_BUILTIN(CONFIG_RTC_DRV_GENERIC)
void read_persistent_clock64(struct timespec64 *ts)
{
@@ -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);
+
static int rtc_generic_get_time(struct device *dev, struct rtc_time *tm)
{
mach_hwclk(0, tm);
--
2.25.1
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