BCM63XX selects HAVE_LEGACY_CLK but does not provide/support clk_get_parent(), so add a simple implementation of that function so that callers of it will build without errors. Fixes these build errors: mips-linux-ld: drivers/iio/adc/ingenic-adc.o: in function `jz4770_adc_init_clk_div': ingenic-adc.c:(.text+0xe4): undefined reference to `clk_get_parent' mips-linux-ld: drivers/iio/adc/ingenic-adc.o: in function `jz4725b_adc_init_clk_div': ingenic-adc.c:(.text+0x1b8): undefined reference to `clk_get_parent' Fixes: e7300d04bd08 ("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs." ) Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> Suggested-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx> Cc: Artur Rojek <contact@xxxxxxxxxxxxxx> Cc: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Cc: linux-mips@xxxxxxxxxxxxxxx Cc: Jonathan Cameron <jic23@xxxxxxxxxx> Cc: Lars-Peter Clausen <lars@xxxxxxxxxx> Cc: linux-iio@xxxxxxxxxxxxxxx Cc: Florian Fainelli <f.fainelli@xxxxxxxxx> Cc: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> Cc: Russell King <linux@xxxxxxxxxxxxxxx> Cc: bcm-kernel-feedback-list@xxxxxxxxxxxx Cc: Jonas Gorski <jonas.gorski@xxxxxxxxx> Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Acked-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx> --- v1 and v2 were: [PATCH] iio/adc: ingenic: fix (MIPS) ingenic-adc build errors (limiting this driver to MACH_INGENIC in Kconfig) v3: add clk_get_parent() to arch/mips/bcm63xx/clk.c v4: add Fixes:, Suggested-by:, Reviewed-by: Acked-by: drop blank line between function and EXPORT_SYMBOL(); (Andy) arch/mips/bcm63xx/clk.c | 7 +++++++ 1 file changed, 7 insertions(+) --- linux-next-20211112.orig/arch/mips/bcm63xx/clk.c +++ linux-next-20211112/arch/mips/bcm63xx/clk.c @@ -381,6 +381,12 @@ void clk_disable(struct clk *clk) EXPORT_SYMBOL(clk_disable); +struct clk *clk_get_parent(struct clk *clk) +{ + return NULL; +} +EXPORT_SYMBOL(clk_get_parent); + unsigned long clk_get_rate(struct clk *clk) { if (!clk)