Messages in this thread | | | Subject | Re: [PATCH 9/9] clk: davinci: Fix link errors when not all SoCs are enabled | From | David Lechner <> | Date | Mon, 28 May 2018 11:54:04 -0500 |
| |
On 05/28/2018 08:43 AM, Sekhar Nori wrote: > On Friday 25 May 2018 11:41 PM, David Lechner wrote: >> This fixes linker errors due to undefined symbols when one or more of >> the TI DaVinci SoCs is not enabled in the kernel config. >> >> Signed-off-by: David Lechner <david@lechnology.com> >> --- >> drivers/clk/davinci/pll.c | 16 ++++++++++++++++ >> drivers/clk/davinci/pll.h | 11 ++++++++--- >> drivers/clk/davinci/psc.c | 14 ++++++++++++++ >> drivers/clk/davinci/psc.h | 12 ++++++++++++ >> include/linux/clk/davinci.h | 19 +++++++++++++++---- >> 5 files changed, 65 insertions(+), 7 deletions(-) >> >> diff --git a/drivers/clk/davinci/pll.c b/drivers/clk/davinci/pll.c >> index 84a343060bc8..65abd371692d 100644 >> --- a/drivers/clk/davinci/pll.c >> +++ b/drivers/clk/davinci/pll.c >> @@ -860,25 +860,41 @@ static struct davinci_pll_platform_data *davinci_pll_get_pdata(struct device *de >> } >> >> /* needed in early boot for clocksource/clockevent */ >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> CLK_OF_DECLARE(da850_pll0, "ti,da850-pll0", of_da850_pll0_init); >> +#endif >> >> static const struct of_device_id davinci_pll_of_match[] = { >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> { .compatible = "ti,da850-pll1", .data = of_da850_pll1_init }, >> +#endif >> { } >> }; >> >> static const struct platform_device_id davinci_pll_id_table[] = { >> +#ifdef CONFIG_ARCH_DAVINCI_DA830 >> { .name = "da830-pll", .driver_data = (kernel_ulong_t)da830_pll_init }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> { .name = "da850-pll0", .driver_data = (kernel_ulong_t)da850_pll0_init }, >> { .name = "da850-pll1", .driver_data = (kernel_ulong_t)da850_pll1_init }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM355 >> { .name = "dm355-pll1", .driver_data = (kernel_ulong_t)dm355_pll1_init }, >> { .name = "dm355-pll2", .driver_data = (kernel_ulong_t)dm355_pll2_init }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM365 >> { .name = "dm365-pll1", .driver_data = (kernel_ulong_t)dm365_pll1_init }, >> { .name = "dm365-pll2", .driver_data = (kernel_ulong_t)dm365_pll2_init }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM644x >> { .name = "dm644x-pll1", .driver_data = (kernel_ulong_t)dm644x_pll1_init }, >> { .name = "dm644x-pll2", .driver_data = (kernel_ulong_t)dm644x_pll2_init }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM646x >> { .name = "dm646x-pll1", .driver_data = (kernel_ulong_t)dm646x_pll1_init }, >> { .name = "dm646x-pll2", .driver_data = (kernel_ulong_t)dm646x_pll2_init }, >> +#endif >> { } >> }; >> >> diff --git a/drivers/clk/davinci/pll.h b/drivers/clk/davinci/pll.h >> index b2e5c4496645..7cc354dd29e2 100644 >> --- a/drivers/clk/davinci/pll.h >> +++ b/drivers/clk/davinci/pll.h >> @@ -122,14 +122,19 @@ int of_davinci_pll_init(struct device *dev, struct device_node *node, >> >> /* Platform-specific callbacks */ >> >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> int da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip); >> void of_da850_pll0_init(struct device_node *node); >> int of_da850_pll1_init(struct device *dev, void __iomem *base, struct regmap *cfgchip); >> - >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM355 >> int dm355_pll2_init(struct device *dev, void __iomem *base, struct regmap *cfgchip); >> - >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM644x >> int dm644x_pll2_init(struct device *dev, void __iomem *base, struct regmap *cfgchip); >> - >> +#endif > > The traditional way of dealing with this for functions is to provide a > static inline stub when CONFIG_ARCH_DAVINCI_DM644x is not defined. Can > we use that? That helps in avoiding ifdefs elsewhere.
I suppose we could. But then we would be taking function pointers to static inline functions, which seems kind of weird to me.
> >> +#ifdef CONFIG_ARCH_DAVINCI_DM646x >> int dm646x_pll2_init(struct device *dev, void __iomem *base, struct regmap *cfgchip); >> +#endif >> >> #endif /* __CLK_DAVINCI_PLL_H___ */ >> diff --git a/drivers/clk/davinci/psc.c b/drivers/clk/davinci/psc.c >> index 6326ba1fe3cc..fffbed5e263b 100644 >> --- a/drivers/clk/davinci/psc.c >> +++ b/drivers/clk/davinci/psc.c >> @@ -513,20 +513,34 @@ int of_davinci_psc_clk_init(struct device *dev, >> } >> >> static const struct of_device_id davinci_psc_of_match[] = { >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> { .compatible = "ti,da850-psc0", .data = &of_da850_psc0_init_data }, >> { .compatible = "ti,da850-psc1", .data = &of_da850_psc1_init_data }, >> +#endif >> { } >> }; >> >> static const struct platform_device_id davinci_psc_id_table[] = { >> +#ifdef CONFIG_ARCH_DAVINCI_DA830 >> { .name = "da830-psc0", .driver_data = (kernel_ulong_t)&da830_psc0_init_data }, >> { .name = "da830-psc1", .driver_data = (kernel_ulong_t)&da830_psc1_init_data }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> { .name = "da850-psc0", .driver_data = (kernel_ulong_t)&da850_psc0_init_data }, >> { .name = "da850-psc1", .driver_data = (kernel_ulong_t)&da850_psc1_init_data }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM355 >> { .name = "dm355-psc", .driver_data = (kernel_ulong_t)&dm355_psc_init_data }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM365 >> { .name = "dm365-psc", .driver_data = (kernel_ulong_t)&dm365_psc_init_data }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM644x >> { .name = "dm644x-psc", .driver_data = (kernel_ulong_t)&dm644x_psc_init_data }, >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM646x >> { .name = "dm646x-psc", .driver_data = (kernel_ulong_t)&dm646x_psc_init_data }, >> +#endif >> { } >> }; >> >> diff --git a/drivers/clk/davinci/psc.h b/drivers/clk/davinci/psc.h >> index c2a7df6413fe..6a42529d31a9 100644 >> --- a/drivers/clk/davinci/psc.h >> +++ b/drivers/clk/davinci/psc.h >> @@ -94,15 +94,27 @@ struct davinci_psc_init_data { >> int (*psc_init)(struct device *dev, void __iomem *base); >> }; >> >> +#ifdef CONFIG_ARCH_DAVINCI_DA830 >> extern const struct davinci_psc_init_data da830_psc0_init_data; >> extern const struct davinci_psc_init_data da830_psc1_init_data; >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DA850 >> extern const struct davinci_psc_init_data da850_psc0_init_data; >> extern const struct davinci_psc_init_data da850_psc1_init_data; >> extern const struct davinci_psc_init_data of_da850_psc0_init_data; >> extern const struct davinci_psc_init_data of_da850_psc1_init_data; >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM355 >> extern const struct davinci_psc_init_data dm355_psc_init_data; >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM356 >> extern const struct davinci_psc_init_data dm365_psc_init_data; >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM644x >> extern const struct davinci_psc_init_data dm644x_psc_init_data; >> +#endif >> +#ifdef CONFIG_ARCH_DAVINCI_DM646x >> extern const struct davinci_psc_init_data dm646x_psc_init_data; >> +#endif > > ifdefs around these extern declarations are not needed.
True. I guess I just prefer a compiler error to a linker error.
| |